球磨辅助的N/O编码对离子电池中子制硬碳阳极的增强储能性能
Jiaxing Xiang1,2, Luxiang Ma1,2, Yanxia Sun1,2
1College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, Sichuan 610059, China.
Langmuir : the ACS journal of surfaces and colloids
|October 30, 2024
概括
/氧编码增强了子外衍生的硬碳阳极,用于离子电池 (SIB). 这种具有成本效益的策略可以提高大规模储能容量和循环稳定性.
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:
- 离子电池 (SIB) 为电网规模的能源存储提供了与离子电池的经济有效的替代品.
- 硬碳 (HC) 阳极的高成本和低于最佳的电化学性能限制了开发.
- 在HC中有效储存需要制定提高容量和速率性能的策略.
研究的目的:
- 为了提高子外衍生硬碳 (HC) 阳极的电化学性能,用于离子电池 (SIB).
- 调查 (N) 和氧 (O) 配合对HC特性和储存能力的协同效应.
主要方法:
- 来自子的HC被修改使用球磨和热解技术的组合.
- 通过codoping,和氧元素同时引入HC结构.
- 对于SIB应用,评估了电化学性能,包括容量,速率能力和循环稳定性.
主要成果:
- N/O配合剂诱导了协同效应,增加了含氧的表面功能组,缺陷和HC中的层间间距.
- 在30mAg-1时,HC阳极的可逆特异容量从272mA增加到343mAhg-1 .
- 修改后的阳极表现出极好的速率性能 (178 mA hg-1在1500 mA g-1) 和高循环稳定性 (92.1%在100个循环后保持).
结论:
- 同时的N/O代是一种有效的策略,用于提高SIBs生物质衍生HC阳极的电化学性能.
- 协同修改改善了储存能力,速率性能和周期寿命.
- 这种方法为开发大规模储能应用的成本效益和高性能HC阳极提供了有希望的途径.
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