ClassID:

213649

H01M8/20 - page 2 - CPC Classification

Classification description:

Fuel cells; Manufacture thereof Indirect fuel cells, e.g. fuel cells with redox couple being irreversible

Recent Application in this class:
#301
20160006055
2016-01-07

PUMP TUB ASSEMBLY FOR REDOX FLOW BATTERY

#302
20160006054
2016-01-07

SINGLE CAPACITY BALANCING IN A REDOX FLOW BATTERY

#303
20160006053
2016-01-07

Gas management systems and methods in a redox flow battery

#304
20160006052
2016-01-07

Charge capacity management in redox flow battery string

#305
20160006051
2016-01-07

SYSTEM ENERGY DENSITY IN A REDOX FLOW BATTERY

#306
20160006046
2016-01-07

Elastomeric End Frame of a Redox Flow Battery

#307
20150380760
2015-12-31

All-vanadium redox flow battery system employing a V/Vredox couple and an ancillary Ce/Ceredox couple in the positive electrolyte solution

#308
20150380757
2015-12-31

Redox flow batteries based on supporting solutions containing chloride

#309
20150380754
2015-12-31

FLOW BATTERY STACK WITH SENSING CHIP

#310
20150372351
2015-12-24

Processes for preparing 1-alkyl-3-alkyl-pyridinium bromide and uses thereof as additives in electrochemical cells

#311
20150372333
2015-12-24

Non-aqueous redox flow batteries including 3,7-perfluoroalkylated phenothiazine derivatives

#312
20150372331
2015-12-24

HIGH-CONCENTRATION VANADIUM ELECTROLYTIC SOLUTION, AND METHOD AND DEVICE FOR PRODUCING THE SAME

#313
20150364768
2015-12-17

REDOX FLOW BATTERY CELL STACK

#314
20150364767
2015-12-17

POROUS ELECTRODE ASSEMBLY, LIQUID-FLOW HALF-CELL, AND LIQUID-FLOW CELL STACK

#315
20150357653
2015-12-10

Vanadium Solid-Salt Battery and Method for Producing Same

#316
20150357651
2015-12-10

Apparatus and methods for treating water and generating electrical power

#317
20150349342
2015-12-03

REDOX BATTERY USE FOR POLYOXOMETALLATE

#318
20150340709
2015-11-26

Graphite-containing electrode and method related thereto

#319
20150333335
2015-11-19

Flow battery having electrodes with a plurality of different pore sizes and or different layers

#320
20150325874
2015-11-12

Redox flow battery system and method of controlling it

#321
20150325873
2015-11-12

Electrolyte for redox flow battery and redox flow battery

#322
20150318568
2015-11-05

High Specific Energy Aqueous Flow Battery

#323
20150318567
2015-11-05

Flow battery with voltage-limiting device

#324
20150311541
2015-10-29

Flow battery having a separator membrane comprising an ionomer

#325
20150307659
2015-10-29

Ion conducting polymer comprising partially branched block copolymer and use thereof

#326
20150303504
2015-10-22

Methods for determining and/or adjusting redox-active element concentrations in redox flow batteries

#327
20150295265
2015-10-15

Electricity-storage battery

#328
20150295247
2015-10-15

Perforated Electrodes for Achieving High Power in Flow Batteries

#329
20150288012
2015-10-08

Pressure density differential device

#330
20150280267
2015-10-01

Semi-solid electrodes having high rate capability

#331
20150280259
2015-10-01

Polyoxometalate active charge-transfer material for mediated redox flow battery

#332
20150263371
2015-09-17

Charge transfer mediator based systems for electrocatalytic oxygen reduction

#333
20150263358
2015-09-17

FLOW BATTERY WITH MIXED FLOW

#334
20150255824
2015-09-10

Method and system to maintain electrolyte stability for all-iron redox flow batteries

#335
20150255823
2015-09-10

Synthesis of electroactive ionic liquids for flow battery applications

#336
20150255803
2015-09-10

Polyarene mediators for mediated redox flow battery

#337
20150249253
2015-09-03

Ion exchange membrane filling composition, method of preparing ion exchange membrane, ion exchange membrane, and redox flow battery

#338
20150247247
2015-09-03

Corrosion resistant and electrically conductive surface of metal

#339
20150244008
2015-08-27

Flow cell with shunt current counter electrode

#340
20150243991
2015-08-27

SMALL ORGANIC MOLECULE BASED FLOW BATTERY

#341
20150236543
2015-08-20

Materials for use with aqueous redox flow batteries and related methods and systems

#342
20150236363
2015-08-20

Flow-type electrochemical cell

#343
20150228997
2015-08-13

Electrolyte for redox flow battery and redox flow battery

#344
20150228950
2015-08-13

Organic-inorganic composite anion exchange membrane containing polyvinylidene fluoride polymer for non-aqueous redox flow battery and method for preparing the same

#345
20150226806
2015-08-13

METHOD AND SYSTEM FOR EVALUATING REDOX FLOW BATTERY

#346
20150221969
2015-08-06

Electrolyte for redox flow battery and redox flow battery

#347
20150221959
2015-08-06

INTEGRATED COMPLEX ELECTRODE CELL HAVING INNER SEAL STRUCTURE AND REDOX FLOW CELL COMPRISING SAME

#348
20150214565
2015-07-30

Energy storage battery

#349
20150207165
2015-07-23

Redox flow cell comprising high molecular weight compounds as redox pair and semipermeable membrane for storage of electrical energy

#350
20150200405
2015-07-16

Electrically conductive sheet material

#351
20150194694
2015-07-09

FLOW BATTERY POWER CONVERTER

#352
20150194690
2015-07-09

Energy storage battery

#353
20150188178
2015-07-02

Safety System for a Flow Battery and Flow Battery System

#354
20150183643
2015-07-02

Chemical stabilization of graphite surfaces

#355
20150180074
2015-06-25

Manifold for redox flow battery for reducing shunt current and redox flow battery comprising same

#356
20150180071
2015-06-25

Fuel cells for use at elevated temperatures and pressures

#357
20150180068
2015-06-25

Method and apparatus for controlling operation of redox flow battery

#358
20150162635
2015-06-11

CONTROL SYSTEM FOR A FLOW CELL BATTERY

#359
20150162633
2015-06-11

Process for operating a redox flow battery system

#360
20150155727
2015-06-04

MONITORING ELECTROLYTE CONCENTRATIONS IN REDOX FLOW BATTERY SYSTEMS

#361
20150155586
2015-06-04

Operating A Redox Flow Battery With A Negative Electrolyte Imbalance

#362
20150155585
2015-06-04

Gravity induced flow cell

#363
20150155584
2015-06-04

Additives for zinc-bromine membraneless flow cells

#364
20150147673
2015-05-28

High-energy-density, aqueous, metal-polyiodide redox flow batteries

#365
20150147666
2015-05-28

Fluidic architecture for metal-halogen flow battery

#366
20150147647
2015-05-28

Copper doped SVO compounds as high rate cathode materials

#367
20150147609
2015-05-28

Systems and Methods for Rebalancing Redox Flow Battery Electrolytes

#368
20150140471
2015-05-21

REDOX FLOW BATTERY ELECTROLYTE AND REDOX FLOW BATTERY

#369
20150129081
2015-05-14

Fuel System Using Redox Flow Battery

#370
20150125768
2015-05-07

Cell and Cell Block Configurations for Redox Flow Battery Systems

#371
20150125764
2015-05-07

Flow Battery Using Non-Newtonian Fluids

#372
20150125729
2015-05-07

Ion exchange membrane, method of preparing the same, and redox flow battery comprising the same

#373
20150115968
2015-04-30

Ultrasonic device detecting charging/discharging status of flow-cell pack

#374
20150114924
2015-04-30

Method of fabricating electrodes of high power-density flow cell

#375
20150111117
2015-04-23

Hybrid flow battery and Mn/Mn electrolyte system

#376
20150104724
2015-04-16

REBALANCING ELECTROLYTES IN REDOX FLOW BATTERY SYSTEMS

#377
20150104723
2015-04-16

Flow battery pack with monitoring system

#378
20150099206
2015-04-09

Redox Flow Battery System for Distributed Energy Storage

#379
20150099199
2015-04-09

Flow battery with dispersion blocker between electrolyte channel and electrode

#380
20150093606
2015-04-02

PUMP-FREE LITHIUM ION LIQUID FLOW BATTERY, BATTERY REACTOR AND PREPARATION METHOD OF ELECTRODE SUSPENSION SOLUTION

#381
20150086896
2015-03-26

MONITORING ELECTROLYTE CONCENTRATIONS IN REDOX FLOW BATTERY SYSTEMS

#382
20150079497
2015-03-19

FUEL CELL DEVICE WITH ELECTROLYTES FLOWING BY MEANS OF PERCOLATION THROUGH ELECTRODES HAVING A POROUS, THREE-DIMENSIONAL STRUCTURE

#383
20150072261
2015-03-12

HIGH POWER HIGH EFFICIENCY FLOW TYPE BATTERY

#384
20150072192
2015-03-12

SPIRAL-WOUND CONVECTION BATTERY AND METHODS OF OPERATION

#385
20150056525
2015-02-26

Method for preparing electrolyte for vanadium redox flow battery using vanadium oxide

#386
20150050581
2015-02-19

Power generation system

#387
20150050570
2015-02-19

PRODUCTION OF VANADIUM ELECTROLYTE FOR A VANADIUM FLOW CELL

#388
20150048777
2015-02-19

Flow battery and usage thereof

#389
20150044537
2015-02-12

Inorganic microporous ion exchange membranes for redox flow batteries

#390
20150031124
2015-01-29

SEPARATOR

#391
20150030961
2015-01-29

FUEL CELLS

#392
20150030954
2015-01-29

Redox flow secondary battery

#393
20150024296
2015-01-22

Method and system for operating a flow battery system based on energy costs

#394
20150019149
2015-01-15

Real-time power distribution method and system for lithium battery and redox flow battery energy storage systems hybrid energy storage power station

#395
20150017568
2015-01-15

REDOX FLOW BATTERY AND CELL FRAME

#396
20150017567
2015-01-15

ELECTROCHEMICAL ENERGY STORAGE DEVICE OR ENERGY CONVERSION DEVICE COMPRISING A GALVANIC CELL HAVING ELECTROCHEMICAL HALF-CELLS CONTAINING A SUSPENSION OR FULLERENE AND IONIC LIQUID

#397
20150017558
2015-01-15

CELL FRAME FOR IMPROVED FLOW DISTRIBUTING AND REDOX FLOW BATTERY HAVING THE SAME

#398
20150017494
2015-01-15

Redox flow battery for hydrogen generation

#399
20150004452
2015-01-01

Separatorless storage battery

#400
20150004445
2015-01-01

Regenerative fuel cells

#401
20140377688
2014-12-25

Redox flow battery with external supply line and/or disposal line

#402
20140377687
2014-12-25

Redox flow secondary battery and electrolyte membrane for redox flow secondary battery

#403
20140377681
2014-12-25

Air-breathing fuel cell and cell stack for the oxidation of ions using oxygen

#404
20140370405
2014-12-18

Organic non-aqueous cation-based redox flow batteries

#405
20140370404
2014-12-18

Redox flow secondary battery and electrolyte membrane for redox flow secondary battery

#406
20140370403
2014-12-18

Inexpensive metal-free organic redox flow battery (ORBAT) for grid-scale storage

#407
20140363753
2014-12-11

Redox flow battery

#408
20140363748
2014-12-11

Sealing frame for a redox-flow battery electrode module

#409
20140363747
2014-12-11

Method and system for rebalancing electrolytes in a redox flow battery system

#410
20140363707
2014-12-11

High performance flow battery

#411
20140356663
2014-12-04

Flow battery systems

#412
20140349203
2014-11-27

Electrocatalyst for fuel cells and method for producing said electrocatalyst

#413
20140349161
2014-11-27

SYSTEMS AND METHODS FOR SHUNT CURRENT AND MECHANICAL LOSS MITIGATION IN ELECTROCHEMICAL SYSTEMS

#414
20140349160
2014-11-27

Redox flow secondary battery and electrolyte membrane for redox flow secondary battery

#415
20140342268
2014-11-20

REDOX FLOW SECONDARY BATTERY AND ELECTROLYTE MEMBRANE FOR REDOX FLOW SECONDARY BATTERY

#416
20140315113
2014-10-23

Flow battery with enhanced durability

#417
20140308547
2014-10-16

Fluidic architecture for metal-halogen flow battery

#418
20140302423
2014-10-09

Flow battery with carbon paper

#419
20140302422
2014-10-09

Magnesium Energy Storage Device Having a Semi-Solid Positive Electrode

#420
20140302408
2014-10-09

Additives for hydrogen/bromine cells

#421
20140302370
2014-10-09

Metal sulfide electrodes and energy storage devices thereof

#422
20140295311
2014-10-02

Flow battery

#423
20140287335
2014-09-25

Systems and methods for shunt current and mechanical loss mitigation in electrochemical systems

#424
20140287330
2014-09-25

POLYOXOMETALATE FLOW-CELL POWER SYSTEM

#425
20140272512
2014-09-18

Redox Flow Battery System Configuration For Minimizing Shunt Currents

#426
20140272493
2014-09-18

Methods to prepare stable electrolytes for iron redox flow batteries

#427
20140272485
2014-09-18

Flow Batteries with Modular Arrangements of Cells

#428
20140272484
2014-09-18

Electrochemical cell stack having a protective flow channel

#429
20140272483
2014-09-18

Systems and methods for rebalancing redox flow battery electrolytes

#430
20140272482
2014-09-18

ELECTROLYTE PROTECTION COMPOSITIONS AND METHODS

#431
20140255821
2014-09-11

Redox flow cell membrane

#432
20140255815
2014-09-11

Cell frame, cell stack, and redox flow battery

#433
20140255804
2014-09-11

CATHOLYTE REGENERATION

#434
20140255746
2014-09-11

High surface area flow battery electrodes

#435
20140255734
2014-09-11

Reservoir for multiphase electrolyte flow control

#436
20140248521
2014-09-04

High energy density redox flow device

#437
20140239906
2014-08-28

REDOX-ACTIVE LIGAND-BASED TRANSITION METAL COMPLEX FLOW BATTERIES

#438
20140234753
2014-08-21

Redox flow batteries based on supporting solutions containing chloride

#439
20140234684
2014-08-21

Redox flow battery system including an anode electrode having a subsurface alloy

#440
20140227628
2014-08-14

Redox Flow Battery Stack and Redox Flow Battery System Having the Same

#441
20140227620
2014-08-14

Flow battery with two-phase storage

#442
20140227574
2014-08-14

Iron flow batteries

#443
20140220463
2014-08-07

PRESSURE FEED FLOW BATTERY SYSTEM AND METHOD

#444
20140199607
2014-07-17

Redox flow batteries based on supporting solutions containing chloride

#445
20140199564
2014-07-17

FLOW BATTERY SYSTEM, AND CONTROL METHOD AND DEVICE THEREOF

#446
20140193724
2014-07-10

GRAVITY FEED FLOW BATTERY SYSTEM AND METHOD

#447
20140193673
2014-07-10

POLARITY SWITCHING FLOW BATTERY SYSTEM AND METHOD

#448
20140186731
2014-07-03

Operating a redox flow battery with a negative electrolyte imbalance

#449
20140178735
2014-06-26

REDOX FLOW BATTERY SYSTEM

#450
20140170524
2014-06-19

Semi-solid electrodes having high rate capability

#451
20140170519
2014-06-19

Flow Battery System and Method Thereof

#452
20140170460
2014-06-19

Redox flow battery

#453
20140154546
2014-06-05

High energy density redox flow device

#454
20140139190
2014-05-22

Control system for a flow cell battery

#455
20140138576
2014-05-22

Aqueous redox flow batteries featuring improved cell design characteristics

#456
20140134465
2014-05-15

Redox flow battery

#457
20140132238
2014-05-15

System and method for sensing and mitigating hydrogen evolution within a flow battery system

#458
20140127542
2014-05-08

Composite separators and redox flow batteries based on porous separators

#459
20140125288
2014-05-08

Energy store and method of charging or discharging an energy store

#460
20140099569
2014-04-10

Organic electrolyte solution and redox flow battery including the same

#461
20140099520
2014-04-10

Liquid Flow Battery System and Repairing Device Thereof

#462
20140080035
2014-03-20

Electrochemical energy storage systems and methods featuring high open circuit potential

#463
20140079976
2014-03-20

Iron-sulfide redox flow batteries

#464
20140072897
2014-03-13

System for energy generation or storage on an electrochemical basis

#465
20140065460
2014-03-06

Redox and plating electrode systems for an all-iron hybrid flow battery

#466
20140060666
2014-03-06

Internally manifolded flow cell for an all-iron hybrid flow battery

#467
20140057195
2014-02-27

Device of Charging/Discharging Electricity by Using Two Flows

#468
20140057141
2014-02-27

PRESSURE BALANCING OF ELECTROLYTES IN REDOX FLOW BATTERIES

#469
20140051003
2014-02-20

High solubility iron hexacyanides

#470
20140051002
2014-02-20

Aqueous redox flow batteries comprising matched ionomer membranes

#471
20140050947
2014-02-20

Hybrid Electrochemical Energy Storage Devices

#472
20140030631
2014-01-30

Electrochemical energy storage systems and methods featuring optimal membrane systems

#473
20140030623
2014-01-30

SEMI-SOLID FILLED BATTERY AND METHOD OF MANUFACTURE

#474
20140028261
2014-01-30

Electrochemical energy storage systems and methods featuring large negative half-cell potentials

#475
20140028260
2014-01-30

Aqueous redox flow batteries comprising metal ligand coordination compounds

#476
20140023943
2014-01-23

Quenching system

#477
20140004403
2014-01-02

Multiple-membrane multiple-electrolyte redox flow battery design

#478
20140004402
2014-01-02

Double-membrane triple-electrolyte redox flow battery design

#479
20140004391
2014-01-02

Regenerative fuel cell with catholyte comprising a polyoxometalate and a vanadium (IV)-compound

#480
20130344367
2013-12-26

High energy density redox flow device

#481
20130316268
2013-11-28

Ion exchange membrane filling composition, method of preparing ion exchange membrane, ion exchange membrane, and redox flow battery

#482
20130309592
2013-11-21

Molten-salt electrolyte unitized regenerative hydrogen-halogen fuel cell with anion transfer

#483
20130309540
2013-11-21

Battery sealing structure, electrolyte circulation type battery cell frame, electrolyte circulation type battery cell stack, and electrolyte circulation type battery

#484
20130302710
2013-11-14

Vanadium flow cell

#485
20130297084
2013-11-07

Power control device and power control method

#486
20130295487
2013-11-07

Polymer blend proton exchange membrane and method for manufacturing the same

#487
20130293005
2013-11-07

Electric motor vehicle and redox flow module and cartridge therefor

#488
20130288153
2013-10-31

Sodium-Sulfur Battery

#489
20130273459
2013-10-17

Ionic Conductive Chromophores and Nonaqueous Redox Flow Batteries

#490
20130269566
2013-10-17

Flow battery power converter

#491
20130266829
2013-10-10

Fluidic architecture for metal-halogen flow battery

#492
20130260204
2013-10-03

Energy storage systems having an electrode comprising LiS

#493
20130252137
2013-09-26

Use of porous membrane and composite membrane thereof in redox flow energy storage battery

#494
20130252062
2013-09-26

SECONDARY REDOX FLOW BATTERY AND METHOD OF MAKING SAME

#495
20130224550
2013-08-29

Lithium-based high energy density flow batteries

#496
20130224538
2013-08-29

Organic non-aqueous cation-based redox flow batteries

#497
20130209916
2013-08-15

Continuous flow-electrode system, and high-capacity power storage and water treatment method using the same

#498
20130196206
2013-08-01

Organic electrolyte solution and redox flow battery including the same

#499
20130189592
2013-07-25

PART SOLID, PART FLUID AND FLOW ELECTROCHEMICAL CELLS INCLUDING METAL-AIR AND LI-AIR BATTERY SYSTEMS

#500
20130177789
2013-07-11

REDOX FLOW BATTERY SYSTEM EMPLOYING DIFFERENT CHARGE AND DISCHARGE CELLS

#501
20130157162
2013-06-20

Redox flow battery and method of operating the same

#502
20130157155
2013-06-20

Fuel cell including cathode electrode using iron redox couple

#503
20130157087
2013-06-20

Flow battery system with standby mode

#504
20130154364
2013-06-20

Vanadium redox battery energy storage system

#505
20130143147
2013-06-06

Liquid battery formed from encapsulated components

#506
20130143145
2013-06-06

Gel formed battery

#507
20130141050
2013-06-06

Aqueous electrolyte lithium sulfur batteries

#508
20130130142
2013-05-23

Flowing electrolyte battery with electric potential neutralization

#509
20130115504
2013-05-09

ION EXCHANGE MEMBRANE FILLING COMPOSITION, METHOD OF PREPARING ION EXCHANGE MEMBRANE, ION EXCHANGE MEMBRANE, AND REDOX FLOW BATTERY

#510
20130095362
2013-04-18

VANADIUM FLOW CELL

#511
20130071702
2013-03-21

Fuel cells

#512
20130059189
2013-03-07

Pressure density differential device

#513
20130059177
2013-03-07

Li-Ion/polysulfide flow battery

#514
20130056076
2013-03-07

BUBBLES GENERATION DEVICE AND METHOD

#515
20130037760
2013-02-14

BIPOLAR PLATE FOR REDOX FLOW BATTERY

#516
20130029187
2013-01-31

HIGH PERFORMANCE FLOW BATTERY

#517
20130017416
2013-01-17

Membrane stack for a membrane based process and method for producing a membrane therefor

#518
20130011704
2013-01-10

Redox Flow Battery System with Multiple Independent Stacks

#519
20130011702
2013-01-10

Redox Flow Battery System with Divided Tank System

#520
20130008782
2013-01-10

ELECTROCHEMICAL CELL STACK

#521
20120328911
2012-12-27

System and method for optimizing efficiency and power output from a vanadium redox battery energy storage system

#522
20120321920
2012-12-20

System and method for operating a flow battery system at an elevated temperature

#523
20120321916
2012-12-20

System and method for sensing and mitigating hydrogen evolution within a flow battery system

#524
20120308867
2012-12-06

FLOWING ELECTROLYTE RESERVOIR SYSTEM

#525
20120282501
2012-11-08

Metal Electrode Assembly for Flow Batteries

#526
20120280820
2012-11-08

Leak sensor for flowing electrolyte batteries

#527
20120259391
2012-10-11

Gel formed battery

#528
20120258345
2012-10-11

Flow battery having electrodes with a plurality of different pore sizes and or different layers

#529
20120244406
2012-09-27

Iron-sulfide redox flow batteries

#530
20120244395
2012-09-27

Flow battery with interdigitated flow field

#531
20120225332
2012-09-06

Thermal electrochemical cell

#532
20120219832
2012-08-30

High temperature metal-halogen flow battery with non-aqueous molten salt electrolyte

#533
20120208104
2012-08-16

FUEL CELL

#534
20120203392
2012-08-09

Method and system for operating a flow battery system based on energy costs

#535
20120202099
2012-08-09

FLOW BATTERY HAVING A LOW RESISTANCE MEMBRANE

#536
20120183872
2012-07-19

Flow battery start-up and recovery management

#537
20120183816
2012-07-19

Quenching system

#538
20120171541
2012-07-05

Redox flow battery

#539
20120171531
2012-07-05

Redox flow battery

#540
20120156535
2012-06-21

Frame of a cell of a redox flow battery

#541
20120135278
2012-05-31

REDOX FLOW BATTERY

#542
20120129039
2012-05-24

Electrical energy storage device

#543
20120107661
2012-05-03

Redox flow battery

#544
20120107660
2012-05-03

Redox Flow Batteries Based on Supporting Solutions Comprising a Mixture of Acids

#545
20120077095
2012-03-29

Electrochemical energy storage systems and methods

#546
20120077079
2012-03-29

Redox flow batteries based on supporting solutions containing chloride

#547
20120077068
2012-03-29

Redox flow batteries having multiple electroactive elements

#548
20120077067
2012-03-29

Fe-V redox flow batteries

#549
20120052347
2012-03-01

Flow battery systems

#550
20120045669
2012-02-23

Flowing electrolyte battery with electric potential neutralization

#551
20120040216
2012-02-16

System dongle

#552
20120003518
2012-01-05

Galvanic electrochemical cells utilizing taylor vortex flows

#553
20110318617
2011-12-29

Electrochemical cell with an electrolyte flow, comprising through-electrodes and production method

#554
20110315934
2011-12-29

Method for fabrication of functionalized graphene reinforced composite conducting plate

#555
20110315560
2011-12-29

PROCESS FOR THE PRODUCTION OF CHEMICALS

#556
20110311896
2011-12-22

Integrated system for electrochemical energy storage system

#557
20110271743
2011-11-10

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Systems and methods for storing and/or transmitting electrical energy

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