试图在铜或其合金上应用阳极膜作为超级电容电极时遇到的循环稳定性问题
Zhiwen Zhang1, Binbin Yao1, Liyang Qin1
1Key Laboratory of Soft Chemistry and Functional Materials of Education Ministry, Nanjing University of Science and Technology, Nanjing210094, China.
Langmuir : the ACS journal of surfaces and colloids
|October 16, 2025
概括
由氧化铜/氧化纳米材料制成的超级电容电极在测试期间显示电容增加. 这项研究表明,铜基板上的二次氧化物增长导致了这种情况,可以通过使用替代基板来防止这种情况.
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:
- 氧化铜/氧化铜纳米材料是超级电容器的前景,因为其高容量,低成本和环保性.
- 由于效率和控制,阳极化是电极制造的首选方法.
研究的目的:
- 调查循环期间铜基超级电容电极异常电容增加背后的机制.
- 通过预防这种现象,确定增强自行车稳定的策略.
主要方法:
- 在铜和黄铜基板上制造阳极薄膜.
- 在缩氧化 (KOH) 电解液中进行循环稳定性测试.
- 分析导致电容增加的机制.
主要成果:
- 铜和黄铜上的阳极薄膜在循环过程中显示出电容持续增加.
- 在底层金属基板上新氧化物的二次生长被确定为原因.
- 在石墨上用电铜薄膜取代铜基板,消除了电容增加.
结论:
- 氧化物在铜基板上的二次生长导致电容增加,损害了循环稳定性.
- 使用像石墨这样的替代基板可以防止这种问题,确保稳定的超级电容性能.
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