华为透露柔性锂电池专利,智能穿戴设备在“憋”什么大招?

Release time:2020-08-31
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source:与非网
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华为技术有限公司近日公布了一种弹性集流体及其制备方法、电池电极极片和柔性锂离子电池专利。

 

华为技术有限公司于 2020 年 8 月 25 日公布一种弹性集流体及其制备方法、电池电极极片和柔性锂离子电池专利,该专利申请时间为 2016 年 12 月 6 日。

 华为透露柔性锂电池专利,智能穿戴设备在“憋”什么大招?

图源:Wired


专利摘要显示,本发明提供了一种弹性集流体,包括弹性聚合物衬底以及设置于所述弹性聚合物衬底上的导电层,所述导电层具有褶皱结构,所述导电层的材料包括金属和 / 或碳材料,该弹性集流体具有高柔韧性与高循环稳定性,将该弹性集流体用于锂离子电池电极片的制备,能够有效避免因极片机械形变和活性物质内部膨胀造成的极片 掉粉现象。本发明还提供了该弹性集流体的制备方法和采用该弹性集流体的电池电极极片和柔性锂离子电池。

 

实际上,在柔性电池方面,以下问题一直是需要克服的技术障碍:


1) 如今的锂离子电池材料本身不具备柔性,如何让电池材料适应这种应用场景

  

2) 电池被弯曲 / 扭曲时,如何维持电池材料颗粒之间良好的接触,减低接触阻抗

  

3) 在电池被弯曲 / 扭曲的场景下,如何保证电池不漏液。

  

4) 如何提高活性物质载量,提高电池容量

 

目前,随着智能穿戴设备的兴起,柔性电池的研究正在受到越来越多的关注。

 

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