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神经网络启发的绑定器可实现快速的离子运输和高压力适应Si阳极

Baoyu Sun¹, Xingxing Jiao¹, Jiangning Liu¹

¹State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Future Technology, Xi'an Jiaotong University, Xi'an 710049, China.

|June 13, 2024

概括

一种新的仿生粘合剂通过提高离子导电性和机械稳定性来增强高容量电池的阳极. 这项创新解决了当前电池技术的局限性,为能源密集的应用铺平了道路.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
纳米技术纳米技术

背景情况:

阳极提供高容量,但受到体积膨胀和结构损坏的影响.
现有的弹性结合剂提高了机械稳定性,但具有较差的离子导电性,阻碍了电极反应.
聚合物结合剂中的缓慢离子传输限制了高容量阳极的实际应用.

研究的目的:

开发一种仿生粘合剂,同时解决离子运输阻力和阳极中的化诱导应力.
为了提高基于的电池阳极的电化学性能和循环稳定性.

主要方法:

合成了一种生物模拟粘合剂,将离子导电聚合物 (聚乙烯基醇) 滴糖乙烯和聚乙烯胺) 与刚性聚合物骨干 (聚烯酸) 结合在一起.
使用新型生物仿真粘合剂制造的阳极.
评估电化学性能,包括速度能力和循环稳定性,在苛刻的条件下 (3.0 mAh cm-2 面积容量).

主要成果:

仿生粘合剂有效地减轻了离子运输阻力和化应力,在循环过程中稳定了纳米粒子.
在8.0 A g-1下实现了1897 mAh高速率的能力.
经过150个循环后,表现出 87% 的优异容量保留.

结论:

开发的生物仿真粘合剂成功地将阳极中的离子导电性与机械性质脱.
这种方法使高能电池的高容量阳极成为可用的.
这些发现突出了推进下一代电池技术的有希望的战略.

关键词:

粘合剂粘合剂粘合剂具有高面积容量的地区.离子导电性离子导电性离子电池是一种离子电池.这是一个Si阳极.

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