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化多孔框架使强大的无阳极金属电池成为可能

Rong Zhuang¹, Xiuhai Zhang¹, Changzhen Qu¹

¹State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an 710072, P. R. China.

Science advances

|September 29, 2023

概括

一种新的化多孔框架通过增强性和最小化离子消耗来抑制金属电池中的树突. 这导致了无树矿的耐用电池,具有更高的能量密度.

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
储能储能储能储能储能储能

背景情况:

金属电池具有很高的能量密度和低成本,但由于树石的形成而受到影响.
目前的树抑制策略往往导致离子耗尽,降低电池性能.

研究的目的:

开发一种新型材料,使得高效率的无金金属电池能够使用.
为了解决涂层过程中相间耗尽的Na+消耗的问题.

主要方法:

化多孔框架的设计和合成.
物理化学和理论的表征,以了解材料的特性.
无阳极和无阳极金属电池的电化学测试.

主要成果:

化多孔框架表现出优越的友性和低反应性.
在无阳极电池中实现了400个周期的稳定循环,并提高了容量比率.
经过验证的概念袋电池,其能量密度为325Wh/kg,在没有阳极的配置中可循环300次.

结论:

精心设计的化多孔框架可以同时实现高Na+亲和度和低离子消耗.
这种方法使得无石和耐用的金属电池成为可能.
该战略为高性能金属电池的实际应用提供了一个有前途的途径.

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