超稳定聚烯稳定通过超交叉连接的聚乙烯-协同-双乙烯) 用于长周期超级电容器应用
Petr Šálek1, Manoj Karakoti1, Sonal Gupta1
1Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 00 Prague, Czech Republic.
概括
我们开发了一种用于超级电容器电极的新复合材料. 这种聚烯 (PPy) 和超交联聚乙烯 (HPStDVB) 复合物在20,000个循环中显示出出色的稳定性和耐用性.
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:
- 聚烯 (PPy) 是一种导电聚合物,具有超级电容电极的潜力.
- 在循环过程中PPy的结构降解限制了其长期稳定性.
- 开发稳定的电极材料对于高性能超级电容器至关重要.
研究的目的:
- 为耐用超级电容电极设计一种机械增强的复合材料.
- 提高聚烯烯的结构稳定性和电化学性能.
- 探索使用超交联聚乙烯-协同-二维尼尔二烯作为聚乙烯的支架.
主要方法:
- 合成了一种由超交联的聚乙烯-协同-双乙烯 (HPStDVB) 微粒化学稳定的聚乙烯 (PPy) 复合物.
- 使用HPStDVB微粒作为PPy的支架.
- 描述了PPy/HPStDVB复合电极的电化学特性和循环稳定性.
主要成果:
- PPy/HPStDVB复合物表现出更紧的结构,保留了PPy结合.
- 电极在20,000个充放电周期中保持了电容,显示出了显著的电化学耐用性.
- 在混合超级电容电池中观察到具有主导性的电容贡献 (77.3%).
结论:
- HPStDVB骨干与PPy之间的相互作用导致了更稳定的结构.
- 这一策略提供了一种简单有效的方法,用于制造机械增强的导电聚合物电极.
- PPy/HPStDVB复合材料为耐用,高性能超级电容提供了一个新的途径.
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