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Battery cells comprising elastic compressible functional layers and manufacturing process

A technology of compressing holes and compressing elasticity, applied in sustainable manufacturing/processing, electrode manufacturing, secondary batteries, etc., can solve problems such as large dead volume and dead mass, reducing battery energy density, and hindering continuous stack transfer of charges.

Pending Publication Date: 2021-07-23
NEDERLANDSE ORG VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition to introducing a large amount of electrochemically inert materials, this design cannot be used in Li-ion batteries because it adds an insulating layer between functional layers that hinders charge transport across the continuous stack.
In addition, this approach also results in a large amount of dead volume and dead mass (inactive parts of the battery), which reduces the energy density of the battery

Method used

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  • Battery cells comprising elastic compressible functional layers and manufacturing process
  • Battery cells comprising elastic compressible functional layers and manufacturing process
  • Battery cells comprising elastic compressible functional layers and manufacturing process

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Embodiment Construction

[0023] The terminology used to describe specific embodiments is not intended to limit the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. The term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that the terms "comprising" and / or "comprising" specify the presence of stated features, but do not exclude the presence or addition of one or more other features. It will also be understood that when a particular step of a method is referred to as following another step, it may be performed directly after said other step, or one or more steps may be performed prior to performing the particular step, unless otherwise stated. an intermediate step. Likewise, it will be understood that when a connection between structures or components is described, that connection may be made directly or through intermediate s...

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Abstract

The present disclosure concerns a rechargeable battery cell comprising a compressible elastic composite material to form one or more of: a compressible and elastic first current collector; and a compressible and elastic positive electrode; and a compressible and elastic solid state electrolyte; and a compressible and elastic negative electrode; and a compressible and elastic second current collector, wherein the compressible elastic composite material comprises a plurality of compressible pores.

Description

technical field [0001] The present disclosure relates to solid state batteries. Background technique [0002] In 3D and 2D all-solid-state batteries, the functional layers are usually tightly stacked together. In a typical battery application, the volume change between a discharged battery state and a charged battery state can be as high as 20%, for example, a volume change of 1.2 times. During the first charge cycle of the rechargeable battery, the formation of the negative electrode (eg, electrode layer) may result in expansion (eg, swelling) of the stack structure. Accordingly, during discharge, the volume of the negative electrode may decrease, eg, shrink. For microbatteries in which the content of active material is very low and therefore the volume change during charge and discharge is small, designs involving closely packed layers may work well. But this will no longer be the case for 3D and 2D batteries in large-scale applications (e.g., greater energy densities),...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/139H01M4/62
CPCH01M4/04H01M4/139H01M4/62H01M4/64H01M10/05H01M2004/021H01M2300/0065C08L2207/53Y02E60/10Y02P70/50H01M10/0525
Inventor 米哈尔·图洛齐茨基桑迪普·乌尼克里希南弗兰基·弗洛里·维考特伦卢卡斯·奥古斯丁·哈弗卡特
Owner NEDERLANDSE ORG VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO
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