可折叠的无阳极电池是通过与CoP纳米粒子结合的N,P-编的碳巨孔纤维实现的
Yongling An1, Zhihao Pei1, Deyan Luan1
1Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong, China.
Science advances
|May 9, 2025
概括
无阳极电池通过使用具有CoP纳米粒子的新型3D碳主体实现高效率和长寿命. 这种结构促进了均的沉积,防止树突并提高了储能性能.
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:
- 无阳极电池 (AFNBs) 提供高能量密度和安全性,但由于低库伦比效率 (CE) 和短寿命而受到影响.
- 在循环过程中,树脂的生长和大量的体积变化阻碍了AFNB的实际应用.
研究的目的:
- 开发一种3D主体材料,用于AFNB中均的沉积.
- 为了提高AFNBs的coulombic效率和循环稳定性.
主要方法:
- 使用相互连接的N,P-编码的碳巨孔纤维 (N/P-CMFs) 制造3D主机.
- 在碳宿主 (CoP@N/P-CMFs) 中纳入酸 (CoP) 纳米粒子.
- 在AFNB中对CoP@N/P-CMF进行电化学测试,使用Na3V2(PO4) 3阴极.
主要成果:
- CoP@N/P-CMFs促进了选择性核和均的沉积.
- 在10 mA/cm2和10 mAh/cm2时,实现了超高的CE>99.97%,达到10 mA/cm2.
- 在可折叠的AFNB中证明了无树的沉积和稳定的循环性能.
结论:
- CoP@N/P-CMFs有效抑制树突,并改善AFNB中的CE.
- 开发的材料增强了无阳极电池的稳定性和寿命.
- 这种方法为下一代基于的储能系统提供了一个有希望的战略.
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