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基于Sn的新型电复合阴极显示了混合-电池的延长周期寿命

Qiang Shu¹, Xiaojiang Hou¹, Qianhong Cao¹

¹School of Material Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, China.

ACS applied materials & interfaces

|April 24, 2024

概括

研究人员开发了新的一维锡基纳米复合材料阴极,以改进混合-电池 (MLIB). 这些先进材料显示出增强的电化学性能和循环稳定性,用于下一代储能.

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:

混合-电池 (MLIB) 正在成为离子电池的先进替代品.
开发高性能电极材料对于提高MLIB电化学性能和循环寿命至关重要.

研究的目的:

为了战略设计和复合材料修改一维锡基纳米复合材料.
为了提高混合-电池 (MLIB) 的电化学性能.

主要方法:

使用电技术合成了四种类型的基于Sn的复合阴极:NST-SnO2,NST-SnO2-NiO,Sn-CNF和Ni3Sn2-CNF.
分析了复合阴极的合成机制.
在 500 mA·g-1 的电流密度下进行了 100 循环测试,以评估电化学性能和循环稳定性.

主要成果:

NST-SnO2 阴极保持了 129.8 mA h·g-1 容量,保留率为 90.76%.
NST-SnO2-NiO阴极实现了147.4 mA h·g-1容量,保持率为88.05%.
Sn-CNF和Ni3Sn2-CNF阴极表现出异常的循环稳定性,保持率分别为104.19%和102.38%.

结论:

新型基于Sn的纳米复合材料阴极表现出了显著的循环稳定性和增强的电化学性能.
这些材料的强大的结构完整性有助于MLIBs的延长周期寿命.
这项研究推动了下一代混合-储能系统的高性能电极材料的开发.

关键词:

在MLIBs中,MLIBs是指MLIBs.基于Sn的阴极是以Sn为基础的静电线电静电线长时间的生命周期生命周期.合成机制的合成机制.

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