边缘暴露的Cu的高质量负荷
Xuzi Zhang1, Jiawei Chen1, Pengcheng Li1
1Department of Mechanical Engineering, University of Alberta, 9211-116 Street NW., Edmonton, Alberta T6G 1H9, Canada.
ACS applied materials & interfaces
|June 9, 2023
概括
这项研究引入了用于金属电池的新型3D主体材料 (ECP@CNF),有效地抑制了树的生长和体积膨胀. 这项创新提高了电池的稳定性和性能,为下一代储能铺平了道路.
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:
- (Li) 树突和体积膨胀阻碍了先进的金属电池的开发.
- 控制核和树突成长需要3D宿主和性材料.
- 调节性晶体的表面结构对于下一代金属电池至关重要.
研究的目的:
- 开发一个高效的3D主机,用于先进的金属电池.
- 使用新型材料控制核和树生长.
- 为了提高金属电池的循环稳定性和性能.
主要方法:
- 在交织的碳纳米纤维 (ECP@CNF) 上安装的 Cu3P 面面纳米颗粒的制造.
- 使用3D ECP@CNF结构来适应体积膨胀和引导沉积.
- 在各种条件下,ECP@CNF/Li对称细胞和ECP@CNF/LiLiFePO4全细胞的表征.
主要成果:
- 通过其3D碳骨架,ECP@CNF有效地适应了体积扩张.
- (300) 主导的Cu3P方面促进了均的核化,减少了极化.
- 对称细胞显示稳定的循环500小时 (10mAcm-2,60%的排放深度) 与32.8mV的hysteresis.
- 全细胞在1°C时达到650个循环,容量保持92%和稳定循环,使用有限的Li.
结论:
- ECP@CNF作为一个高效的3D Li主机,显著提高了金属电池的性能.
- 该材料的独特结构和组成使其能够进行均的和剥离.
- 这项工作为在苛刻的条件下建造高性能金属电池提供了洞察力.
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