具有超快速能量存储能力的高度n-Dopable π-联的回氧聚合物
Yanliang Liang, Zhihua Chen1, Yan Jing
1§Polyera Corporation, 8045 Lamon Avenue, Skokie, Illinois 60077, United States.
Journal of the American Chemical Society
|April 1, 2015
概括
研究人员开发了一种新型的π-合氧化还原聚合物,可以达到高n-doping水平和增强导电性. 这种先进的聚合物作为可充电电池的充电存储材料表现出色.
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
- 聚合物化学 聚合物化学
背景情况:
- 开发高性能充电存储材料对于先进的能源应用至关重要.
- π结合的聚合物由于其可调节的电子特性,具有储能潜力.
- 在合聚合物中实现稳定和高水平的n-doping仍然是一个重大挑战.
研究的目的:
- 合成和表征一种具有集成氧化还原位的新型π结合氧化还原聚合物.
- 调查新聚合物的n-doping行为和电子导电性.
- 评估聚合物作为可充电电池中充电储存材料的性能.
主要方法:
- 合成了聚{[N,N 二二二氧化) -1,4,5,8-甲基胺-2,6-二]-高-5,5二二乙烯) (P(NDI2OD-T2)) 和一个对照聚合物.
- 电化学表征包括循环电压测量和静电循环.
- 阻抗光谱和电荷传输测量以评估导电性.
主要成果:
- 合成的P(NDI2OD-T2) 聚合物成功地被n-doped到2.0的高水平,显示出显著增强的电子导电性.
- 与骨干绝缘模拟器相比,P(NDI2OD-T2) 在可充电电池中表现出优异的性能.
- 该聚合物在100°C时达到其理论容量的95%,并在3000个循环后保持96%的容量.
- 电化学测量证实了超快的电极动力学,这种动力学归因于在n-doped状态下的高导电性.
结论:
- 一种高度n-dopable π-conjugated redox聚合物的成功演示为先进的储能材料开辟了新的途径.
- 高电子导电性和稳定的循环性能P(NDI2OD-T2) 突出显示了其对高速充电电池的潜力.
- 这项工作为设计具有量身定制的电化学性质的功能合聚合物提供了一个新的平台.
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