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Voltage-varying hybrid electrochemical cell design

An electrochemical, hybrid technology, used in hybrid capacitor electrodes, hybrid capacitor electrolytes, hybrid capacitor current collectors, etc., to solve problems such as chemical properties and voltage range mismatches

Pending Publication Date: 2021-04-30
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in some cases, the mixing of different electrode active material chemistries has been limited by the voltage range mismatch between the various cathode or anode electroactive materials.

Method used

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  • Voltage-varying hybrid electrochemical cell design
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  • Voltage-varying hybrid electrochemical cell design

Examples

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Embodiment Construction

[0047] detail

[0048] Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth, such as examples of specific components, components, devices and methods, in order to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

[0049] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the / the" may also be intended to include the plural forms ...

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Abstract

The invention relates to a voltage-varying hybrid electrochemical cell design. A hybrid lithium ion electrochemical cell includes: a first electrode having a first polarity and a first electroactive material which can reversibly cycle lithium ions and has a first maximum operating voltage, and a second electrode having a first polarity and a second electroactive material having a second maximum operating voltage. A difference between the second and first maximum operating voltages defines a predetermined voltage difference. The cell further includes at least one third electrode,a separator and an electrolyte, the third electrode has a second polarity opposite to the first polarity, and comprises a third electroactive material that reversibly circulates lithium ions,. A voltage changing component (e.g., a diode) is in electrical communication with the first and second electrodes. In a first operating state corresponding to charging, the at least one voltage changing component is configured to induce a voltage drop corresponding to the predetermined voltage difference, providing a high power density and high energy density hybrid lithium ion electrochemical cell.

Description

technical field [0001] introduction [0002] This section relates to background information to the present disclosure which is not necessarily prior art. [0003] The present disclosure relates to hybrid lithium-ion electrochemical cells with high energy capacity and high power capacity. A hybrid lithium ion electrochemical cell comprising a first electrode having a first polarity and a first electroactive material that reversibly cycles lithium ions and a first electrode having a first polarity and a second electroactive material different from the first electroactive material second electrode. In some cases where the electrodes are of different electroactive materials, they may be limited in operation by a predetermined voltage difference. A voltage changing member, such as a diode, is in electrical communication with the first and second electrodes and provides a voltage drop corresponding to a predetermined voltage difference between the first and second electrodes. B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/44H01M10/0525H01M10/058H01M50/502
CPCH01M10/4257H01M10/4207H01M10/44H01M10/441H01M10/058H01M10/0525H01M2010/4271H01G11/04H01G11/08H01G11/28H01G11/32H01G11/46H01G11/54H01G11/68H01G11/82Y02T10/70Y02P70/50Y02E60/10
Inventor 苏启立刘海晶吴美远孔德文侯孟炎
Owner GM GLOBAL TECH OPERATIONS LLC
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