构建基于12-聚基的协调聚合物@缩石墨烯球复合材料作为电池的阳极
Jinlong Zhuo1,2, Hongyun Cui2, Yiqun Zheng1
1School of Engineering, and School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, 273155, P. R. China.
Chemistry, an Asian journal
|June 21, 2023
概括
新的聚氧甲酸盐 (POMs) 与曲石墨烯球 (CGBs) 结合,增强了离子电池阳极. 新的[Cu(pyttz) 2PMo12@CGB材料显示了对高性能离子电池 (LIB) 的容量和稳定性的改进.
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
- 纳米技术纳米技术
背景情况:
- 聚氧甲酸盐 (POMs) 由于电子导电性差和电解质溶解,限制了它们在储能中的使用.
- 曲石墨烯球 (CGBs) 具有高电导率和独特的结构优势.
- 将POM与CGB集成,有可能克服电化学应用中POM的局限性.
研究的目的:
- 合成基于POM的新型协调聚合物,其中包括CGBs.
- 研究这些新材料的电化学储存性能和离子扩散动力学.
- 评估它们作为高性能离子电池 (LIB) 的先进阳极材料的潜力.
主要方法:
- 基于POM的协调聚合物的合成: [Cu(pyttz) ]2PMo12@CGB (n=1, 2, 3).
- 电化学表征包括静电间歇定位技术 (GITT) 和电化学阻抗光谱 (EIS).
- 评价可逆特定容量,循环稳定性和速率性能.
主要成果:
- 合成的[Cu(pyttz) ]PMo12@CGB材料将CGB的高电子导电性与POM的优秀Li+迁移动力学相结合.
- [Cu(pyttz) ]2]PMo12@CGB (2) 在150个循环后在0.1 A g-1下显示出~941.4 mAh g-1的优异可逆特异容量.
- 与原始POM相比,复合材料显示出明显改善的电化学性能.
结论:
- 将POM与CGB集成,有效地提高了电化学存储性能.
- 开发的基于POM的协调聚合物显示出很大的希望,作为LIBs的高性能阳极材料.
- 这项工作为在储能应用中开发先进的POMCP阳极铺平了道路.
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