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Xiaoyang Deng¹, Pengfei Zhang¹, Zihao Wan¹

¹Laboratory of Advanced Materials and Energy Electrochemistry, Institute of New Carbon Materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, China.

Small (Weinheim an der Bergstrasse, Germany)

|March 3, 2024

概括

研究人员通过重建分层双氧化物 (LDH) 来开发水性离子电池 (AZIB) 的新阴极材料. 这项创新提高了电池性能,并为下一代储能解决方案提供了一个有前途的战略.

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:

水性离子电池 (AZIB) 提供安全和经济高效的能源存储.
高性能阴极对于推进AZIB技术至关重要.
现有的正极材料在匹配金属阳极方面存在局限性.

研究的目的:

为AZIBs开发一种新的正极材料.
通过接口工程来提高AZIB的电化学性能.
探索重建的层状双氧化物 (LDH) 作为AZIB阴极的潜力.

主要方法:

在现场通过电化学循环激活 (ECA) 将NiCo-LDHs重建为NiCo-LDHs/Ni(Co)OOH异构.
在AZIB中测试ECA-NiCo-LDHs阴极的电化学性能.
理论计算以了解异构结构在离子储存中的作用.

主要成果:

优化的ECA-NiCo-LDHs阴极在1Ag-1时实现了181.5mAhg-1的容量.
阴极在700个循环以5Ag-1后保留了75%的初始容量.
NiCo-LDHs/Ni(Co) OOH异构结构显示了增强的离子扩散和电荷转移.

结论:

LDH的接口工程为AZIBs创建了有效的阴极材料.
该ECA方法为设计高性能电极材料提供了一个新的策略.
开发的异构结构显著提高了AZIB的电化学性能和稳定性.

关键词:

尼科-LDHs 的使用.灵活的离子电池是一种灵活的离子电池.不同结构的异构结构.表面重建重建的重建.

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