聚合物脊柱eutectogel电解质用于高能离子电池
An-Sofie Kelchtermans1,2, Bjorn Joos1,3,2, Dries De Sloovere1,3,2
1Institute for Materials Research (imo-imomec), Materials Chemistry, DESINe Group, Hasselt University, Agoralaan Building D, Diepenbeek 3590, Belgium.
ACS omega
|October 16, 2023
概括
一种使用N-异烯胺 (NIPAM) 的新型聚合物脊柱eutectogel (P-ETG) 固态电解质,与高能离子电池的富含的NMC622阴极具有很好的兼容性.
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
- 聚合物科学 聚合物科学
背景情况:
- 开发先进的固态电解质对于高能离子电池 (LIB) 是至关重要的.
- 确保电化学兼容性与商业上相关的阴极材料是实际LIB应用的关键挑战.
研究的目的:
- 介绍和描述一种新型的聚合物脊柱eutectogel (P-ETG) 混合固态电解质.
- 为了评估基于NIPAM的P-ETG与富含的LiNi0.6Mn0.2Co0.2O2 (NMC622) 阴极的电化学兼容性.
主要方法:
- 基于NIPAM的P-ETG电解质的合成和表征.
- 电化学测试包括循环电压测量和静电循环.
- 物理化学分析:福里埃变换红外光谱学,粉末X射线衍射和元素分析.
主要成果:
- 基于NIPAM的P-ETG证明了与NMC622.2的优异化学和电化学兼容性.
- 没有观察到任何界面反应,晶体构成没有变化,也没有观察到过渡金属的出.
- 电解质表现出广泛的电化学稳定性窗口 (1.5-5.0 V) 和良好的离子导电性 (0.82 mS cm-1).
- 基P-ETG基NMC622细胞表现出稳定的循环性能,高库伦比效率 (>95%).
结论:
- 基于NIPAM的P-ETG是一种有前途的固态电解质,用于使用NMC622阴极的高能LIB.
- 了解电解质-电极兼容性对于先进电池材料的实际应用至关重要.
- 这项工作为下一代LIB设计稳定接口提供了洞察力.
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