增强的"捕获转换"功能使得超稳定的离子储存成为可能
Zhongquan Wang1,2,3, Bangjun Wu2,3, Zhenping Qiu2,3
1School of Renewable Energy, Inner Mongolia University of Technology, Ordos, 017010, China.
在MXene (P-PbTe/MXene) 超结构上装饰的添加的类化物显著提高了离子电池的阳极性能. 这种新型材料克服了缓慢的动力学和穿效应,实现了先进的能量存储的优越容量,速率能力和长期循环能力.
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:
- 金属化物 (MCs) 是对离子电池 (KIB) 阳极有前途的.
- 缓慢的动力学和穿效应限制了KIB中的MC性能.
- 开发先进的阳极材料对于高效的KIB至关重要.
研究的目的:
- 设计和合成P-doped PbTe/MXene超结构,以提高KIB阳极性能.
- 调查P-doping对PbTe/MXene电化学特性的影响.
- 为了解决KIB阳极中缓慢的氧化还原动力学和穿效应的局限性.
主要方法:
- 在MXene上装饰PbTe的热水反应.
- 对 PbTe 和 MXene 网格进行双功能兴奋剂.
- 在KIBs中的P-PbTe/MXene阳极的电化学表征.
主要成果:
- P-PbTe/MXene阳极表现出高可逆容量 (289.1mAhg-1在200个循环后0.2Ag-1).
- 实现了特殊的速率性能 (151.3 mAh g-1 在 20 A g-1).
- 观察到超稳定的循环 (180.1mAhg-1在2000个循环后的2.0Ag-1),在完整的细胞中具有高能量密度和曲稳定性.
结论:
- P-PbTe/MXene 超结构通过提高动力学和抑制穿效应,有效地提高了 KIB 阳极性能.
- P-doping策略为开发高性能KIB阳极材料提供了一个可行的途径.
- 这项工作有助于推进下一代基于的储能系统.
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