洞察氧化物电解质中的结晶性作用,使高性能全固态硫电池成为可能
Shiyi Sun1, Xiangming Cui1, Qianyue Ma2
1Department of Environmental Science and Engineering, Xi'an Key Laboratory of Solid Waste Recycling and Resource Recovery, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China.
Journal of colloid and interface science
|July 12, 2023
概括
优化大规模,,,酸固态电解质中的结晶性显著提高了所有固态硫电池的性能. 这一突破提高了离子导电性,并抑制了树突的生长,从而实现了稳定,高容量的能量存储.
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
- 固态化学 固态化学
背景情况:
- 全固态硫电池 (ASSLSB) 提供高能量密度和安全性,但受到固态电解质 (SSE) 特性的限制.
- 挑战包括低离子导电性,电极接触不良和树形成.
研究的目的:
- 调查结晶度优化对Li1.5Al0.5Ge1.5 (LAGP) 的SSEs的影响.
- 为了建立一个基本的结晶性和ASSLSB性能之间的联系.
- 为实际应用开发高性能的LAGP SSE.
主要方法:
- 大规模制造Li1.5Al0.5Ge1.5 (LAGP) 固态电解质.
- 控制调节LAGP的结晶性.
- 离子导电性,表面粗性和内部多孔性的表征.
- 使用优化LAGP的ASSLSB的性能测试.
主要成果:
- 优化的LAGP实现了高晶度 (∼99.9%) 与低表面粗性和多孔性 (1.49%).
- 实现了2.11 × 10-4 S cm-1的离子导电性,改善了接口接触并降低了电阻.
- 已证明对树传播的耐药性.
- 在0.1°C的150个循环后,ASSLSB产生了647.9mAh/g的高可逆容量.
结论:
- 结晶性是决定像LAGP.这样的氧化物SSEs性能的一个关键因素.
- 优化的LAGP SSE显著提高了ASSLSB的效率和稳定性.
- 这项工作为开发下一代高性能ASSLSB提供了途径.
关键词:
结晶性是指结晶性是指结晶性.离子导电性 离子导电性李{1.5) {0.5) 气{1.5) 气{1.5) 气{PO} (4)) 气{3) 气{3} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4} 气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}气{4}硫电池的使用方法固态电解质 固态电解质
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