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对于酸电池的双氧化物层的MXene支电解工程

Ze Chen¹, Jiaxiong Zhu¹, Shuo Yang¹

¹Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China.

Angewandte Chemie (International ed. in English)

|July 22, 2024

概括

这项研究介绍了MXene作为一种添加剂,以改善-电池阴极,提高能源密度和循环稳定性,用于大规模储能. 新的电极具有高容量和长周期寿命.

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:

水性可充电-电池面临的挑战是能量密度低,循环稳定性差,这是由于基阴极的局限性造成的.
目前的阴极制备方法复杂且不可扩展,阻碍了大规模应用.

研究的目的:

改进使用MXene作为功能添加剂的NiCo层状双氧化物 (LDH) 的电沉积制备.
为水性电池开发高性能阴极材料,以提高能量密度和循环稳定性.

主要方法:

使用MXene作为添加剂,以增强尼科层双氧化物 (LDH) 在泡上的电沉积.
制造的无粘合剂的NiCo LDH电极,具有超高的面积负荷.
测试了由此产生的性NiCo LDH电池的电化学性能.

主要成果:

实现了超高的面积负荷 (~65毫克/厘米-2),并改善了界面接触和离子导电性.
提供高放电容量 (20.2 mAh cm−2或311 mAh g−1) 和显著的速率性能 (9.6 mAh cm−2在120 mA cm−2).
经过1万个循环后,表现出极好的循环寿命,容量保留88.6%,并实现了超高能量密度.

结论:

添加剂MXene显著改善了NiCo LDH阴极制备和水性可充电电池的性能.
开发的电极为高性能,可扩展的储能解决方案提供了一个有希望的途径.
这项工作为设计高性能水性电池的先进阴极材料提供了洞察力.

关键词:

这就是MXene MXene.酸电池酸电池是一种水性电池的水性电池是什么电极位置的电极位置有层的双氧化.

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