作为陶添加剂,MgNiO2可以提高金属阳极的耐用性
Zhaoxin Lu1, Muqin Wang2, Shuaishuai Chen1
1Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials & Technology, Jianghan University, Wuhan 430056, China.
ACS applied materials & interfaces
|June 10, 2024
概括
氧化 (MgNiO2) 通过稳定固体电解质间相 (SEI) 层,提高金属阳极的耐用性. 这种陶添加剂改善了离子电池的循环寿命,显示了先进的能量存储的巨大潜力.
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:
- 陶添加剂对于调节金属阳极的界面反应至关重要.
- 一个稳定的固体电解质间相 (SEI) 层是提高金属阳极耐用性的关键.
研究的目的:
- 引入MgNiO2 (MN) 作为一种用于提高金属阳极性能的新型陶添加剂.
- 调查MN对SEI层特性和界面电阻的影响.
主要方法:
- 纳入MgNiO2的保护膜,用于基细胞.
- 用MgNiO2 (CNF @ MN) 修改碳纳米纤维主体,用于3D阳极结构.
- 电化学测试的LiidiyeCu,LiidiyeLi对称,和LiidiyeNCM811细胞.
主要成果:
- 添加MgNiO2的保护膜提高了LiCu细胞的耐用性4倍 (∼210个周期).
- 经MN修改的细胞中的SEI层表现出半导体特性,调整界面反应.
- CNF @ MN修改的3D主机表现出了卓越的运行稳定性 (在LiidiyeLi对称细胞中约2400小时,在LiidiyeNCM811细胞中约280个周期).
结论:
- MgNiO2是稳定金属阳极的有效陶.
- MN的惰性半导体性质要求对阳极应用进行进一步的研究.
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