兴奋剂规则 稳定 δ-MnO2高性能水性离子电池的阴极
Shuimei Chen1, Yueqi Kong1, Cheng Tang2
1Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia.
Small (Weinheim an der Bergstrasse, Germany)
|March 15, 2024
概括
兴奋剂稳定了水性离子电池 (AAIB) 的δ-MnO. 这种增强提高了结构完整性,导致V-δ-MnO2阴极的超级容量和循环稳定性,用于先进的能量存储.
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:
- 由于其分层结构, δ-MnO是水性离子电池 (AAIB) 的有前途的阴极材料.
- 在Al3+间隔过程中的结构崩限制了原始δ-MnO2的性能.
研究的目的:
- 为了提高AAIBs的δ-MnO2的结构稳定性和电化学性能.
- 研究异质金属兴奋剂对δ-MnO2阴极材料的影响.
主要方法:
- 在δ-MnO2框架中引入异质金属剂,特别是 (V).
- 在AAIB中对V-doped δ-MnO2 (V-δ-MnO2) 的电化学测试.
- 结构性和电子性质的理论和实验分析.
主要成果:
- 在200 mA g-1下,V-δ-MnO2具有518 mAh g-1的高特异容量.
- 通过400个循环实现了显著的循环稳定性,并提高了速度能力.
- 维基因兴奋剂显著增强了格子凝聚力的能量,Al3+相互作用和电导率.
结论:
- 不同质的金属兴奋剂,特别是,有效地加强了AAIBs的δ-MnO结构.
- 与其他兴奋剂材料和报告的AAIB阴极相比,V-δ-MnO2显示出更高的性能.
- 这项研究提供了一个开发高级电池应用的高性能阴极的策略.
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