通过吸附和兴奋剂调节对玻罗量子电容的作用
Guangmin Yang1, Xinlin Yang1, Zhuo Li1
1College of Physics, Changchun Normal University Changchun 130032 China linjy994@nenu.edu.cn.
RSC advances
|September 22, 2023
概括
提高电极材料中的量子电容,可以提高电双层超级电容器 (EDLC) 的能量密度. 使用S和N的烯合物显著增加了电荷积累,使它们成为EDLC电极的理想选择.
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
- 计算物理 计算物理
背景情况:
- 电气双层超级电容器 (EDLC) 提供高功率,长寿命和安全性,但其能量密度较低.
- 提高电极材料的量子电容 (CQ) 是克服这一局限性的关键策略.
研究的目的:
- 为了研究空缺,兴奋剂和金属原子吸附对玻罗量子电容的影响.
- 为了确定提高EDLC能量密度的潜在电极材料.
主要方法:
- 使用第一原则计算,系统地研究烯的修饰.
- 分析了S和N兴奋剂以及Al原子吸附对CQ的影响.
主要成果:
- 硫 (S) 兴奋剂显著增强了正电荷积累,在0.38V时最大CQ为157.3μF cm−2.
- (N) 兴奋剂大大改善了负电位电荷积累,在 -0.24 V 时达到 187.8 μF cm-2 的最大 CQ.
- 在烯上 (Al) 原子的吸附也增强了CQ,最大值为109.1μF cm-2.2.
结论:
- S-doped 和 N-doped 烯是EDLC中正电极和负电极的有希望的候选物.
- 烯修饰提供了一个可行的途径来增加超级电容器的能量密度.
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