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MXene-BN-引入人工SEI以抑制金属电池的树生长

Chang Liu¹, Zhaoxia Yuan¹, Kai Chen¹

¹Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin 300071, P. R. China.

ACS applied materials & interfaces

|November 27, 2023

概括

这项研究介绍了一种新的MXene-BN/Cu 3D电流收集器,可以有效地抑制金属电池中的树石的生长,在500个循环中实现高库伦比效率.

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:

金属阳极对于高能量密度电池至关重要.
树的生长仍然是一个主要的挑战,阻碍了电池的安全性和寿命.
性基板可以提高金属阳极的性能.

研究的目的:

为金属阳极开发一种新的3D电流收集器.
为了研究MXene-BN/Cu结构对沉积的影响.
为了提高金属电池的电化学性能和安全性.

主要方法:

使用过方法制造一个MXene-BN/Cu 3D电流采集器.
在沉积过程中形成的人工固体电解质接口 (SEI) 层的分析.
电化学循环测试,以评估沉积和剥离.

主要成果:

的MXene-BN/Cu结构有效地缓解了沉积过程中的体积变化.
由Li3N和LiF组成的人工SEI层形成,抑制了树的生长.
在500个循环中实现了高库伦比效率 (∼98.0%),显示出稳定的循环特性.
在沉积过程中产生了LiBH4.

结论:

MXene-BN/Cu 3D电流采集器是开发无树金金属阳极的一个有前途的战略.
这种方法提高了金属电池的电化学性能和循环稳定性.
人工SEI层在抑制树形成方面发挥着至关重要的作用.

关键词:

这就是MXene MXene.人工SEI层是一个人工SEI层.二二二二二二二二金属阳极是一种金属阳极.

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