铁基六烯酸酸盐作为离子电池的高稳定性阴极的协调工程
Jiang Zhong1, Lirong Xia2, Song Chen1
1State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, School of Physics and Electronics, Hunan Key Laboratory of Two-Dimensional Materials, Engineering Research Center of Advanced Catalysis of the Ministry of Education, Hunan University, Changsha 410082, People's Republic of China.
概括
富含的铁基六烯酸铁酸阴极被合成用于离子电池 (SIB). 这种协调工程方法显著提高了可再生能源存储的初始库伦比克效率,速率能力和寿命.
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
- 化学工程是化学工程的重要组成部分.
背景情况:
- 基于铁的六烯酸酸盐 (Fe-HCF) 由于其开放通道结构,可以作为离子电池 (SIB) 的阴极材料.
- 实用的SIB面临挑战,包括初始库伦比克效率 (ICE) 低,速率性能差,寿命有限.
研究的目的:
- 使用协调工程开发用于SIB的富含的Fe-HCF阴极.
- 研究Fe-HCF材料中的结构电化学性质关系.
- 为了实现高性能Fe-HCF阴极的可扩展合成.
主要方法:
- 使用10公斤级化学反应器合成富含的Fe-HCF,重点是协调工程.
- 系统地研究协调环境与电化学行为之间的关系.
- 使用Fe-HCF阴极和硬碳阳极制造和测试全电池.
主要成果:
- 在5°C时达到99.3 mAh g-1的可逆容量,在100°C时达到51 mAh g-1的可逆容量.
- 证明了长周期寿命,在50°C时超过15,000个周期,高ICE为92.7%.
- 完整细胞表现出极好的周期稳定性,在1000个周期内保持98.3%的容量.
结论:
- 协调工程对于优化SIB中的Fe-HCF阴极性能至关重要.
- 开发的Fe-HCF材料表现出高性能和可扩展性,用于可持续的能源存储.
- 通过协调工程控制核和形态是先进SIB阴极的关键.
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