氧等离子处理的硬碳用于高速和耐用的离子储存
Xin Li1,2,3, Guiyu Liu3, Baolin Liu3
1College of Undergraduate Education, Shenzhen Polytechnic University, Shenzhen, 518055 Guangdong, China.
ACS applied materials & interfaces
|August 11, 2025
概括
氧等离子处理精确调整硬碳 (HC) 与碳基,增强储存. 这种来自生物质的HC显示出对离子电池的容量和稳定性有所改善.
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
- 表面化学 表面化学
背景情况:
- 调整硬碳 (HC) 中的氧功能组对于储存性能至关重要.
- 实现对这些功能组的精确控制仍然是一个挑战.
研究的目的:
- 引入一种有效的氧等离子处理策略,用于修改硬碳.
- 为了提高生物质衍生硬碳的储能性能.
主要方法:
- 氧气等离子处理以丰富基组 (CO) 在木衍生HC上.
- 密度函数理论 (DFT) 计算和现场拉曼光谱.
- 离子电池的电化学性能测试.
主要成果:
- 用CO组进行表面修改,改善了电子导电性和接口动力学.
- CO功能降低了电荷转移障碍,并促进了吸附-间隙机制.
- 功能化的HC促进了稳定的,富含无机物固体电解质接口 (SEI) 膜,减少了电解质降解.
- OHC-1400实现了高初始容量 (304.61 mAh g-1) 和出色的循环稳定性 (9550个循环后94.2%的保留率).
结论:
- 氧气等离子治疗是一种可行的策略,用于精确地表功能化HC.
- 碳基缩显著提高了的储存性能.
- 来自生物质的HC为高性能离子电池提供了一个有前途的途径.
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