多功能纳米复合物聚合物集成Ca-doped CeO2电解质用于坚固和高速的全固态离子电池
Pan Yang1,2, Zhenzhen Wu2, Mingli Li2
1Institute for Sustainable Transformation, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
Angewandte Chemie (International ed. in English)
|October 17, 2024
概括
这项研究引入了全固态离子电池的新型固体纳米复合物电解质 (SNEs). 这些SNE增强了离子的移动性,并防止了树突的生长,为更安全,高性能电池铺平了道路.
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:
- 固体聚合物电解质 (SPEs) 为所有固态离子电池 (ASSSIB) 提供无接口.
- 关键的挑战包括缓慢的Na+运输和树突的传播,阻碍了实际应用.
- 开发先进的电解质对于下一代能源储存至关重要.
研究的目的:
- 为ASSSIBs开发多功能固体纳米复合物电解质 (SNEs).
- 为了增强Na+的移动性,并抑制树突的生长.
- 提高ASSSIB的整体性能和安全性.
主要方法:
- 合成的Ca-doped CeO2 (Ca-CeO2) 纳米管框架.
- 整合Ca-CeO2与聚乙烯氧化物) 甲基乙烯烯酸乙烯- perfluoropolyether共聚合物 (PEOA-PFPE).
- 碳涂层酸 (NVP@C) 玉米PEOA-PFPE/Ca-CeO2玉米Na硬币电池的制造和电化学测试.
主要成果:
- 通过和氧空缺效应,协同促进Na+解离和流动性.
- 由于快速的Na+运输通道和均的Na沉积,有效地抑制了Na树突的生长.
- 实现了令人印象深刻的速率能力 (97.9 mAh g-1在2C) 和循环稳定性 (84.3%在1C下300个循环后保持).
结论:
- 多功能SNE将功能无机框架纳入含的SPE是强大的ASSSIB的一个有希望的策略.
- 开发的PEOA-PFPE/Ca-CeO2电解质显著提高了ASSSIB的性能.
- 这项工作有助于商业化高性能和安全的固态离子电池.
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