氧气空缺增强了灵活不对称超级电容器的等级NiCo2S4@MnO2电极
Qianwen Liu1, Chengjingmeng Zhang1, Ruidong Li1
1School of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, P. R. China.
Journal of colloid and interface science
|September 13, 2024
概括
有氧空缺的工程金属氧化物复合材料提高了超级电容器的性能. 这些新型材料为先进的电子设备提供高能量密度和稳定性.
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
- 纳米技术纳米技术
背景情况:
- 超级电容器面临能量密度的限制,这阻碍了它们在电子产品中的使用.
- 作为电极材料的金属氧化物具有较差的导电性和稳定性.
- 核心外的异构结构和氧气空位工程是提高超级电容器性能的关键策略.
研究的目的:
- 为增强的超级电容应用开发新的核心外异构结构.
- 研究氧气空缺在改善电化学性质中的作用.
- 为可穿戴电子产品创建灵活的超级电容器.
主要方法:
- 在碳布上的NiCo2S4纳米球和MnO2纳米板的现场生长.
- 通过化学还原引入氧气空缺 (VO).
- 使用NiCo2S4@MnO2-V3和活性炭 (AC) 制造非对称超级电容器 (ASC).
- 电化学测试包括电容,能量密度,功率密度和循环稳定性.
- 密度函数理论 (DFT) 计算以了解VO效应.
主要成果:
- NiCo2S4@MnO2-V3复合材料在碳布上形成了纳米花.
- DFT证实,VO缺陷增强了MnO2.2的电子和结构性质.
- 实现了高质量电容 (1376 F g-1) 和面积电容 (2.06 F cm-2).
- 不对称的超级电容器表现出高能量密度 (39.7 Wh kg-1) 和出色的功率密度.
- 该设备在10000个循环后保持了73.1%的电容,并具有100%的库伦比效率.
- 超级电容器表现出极好的灵活性.
结论:
- 开发的NiCo2S4@MnO2-V3核心外结构与氧气空缺显著提高了超级电容器的性能.
- 该材料展示了高性能,稳定和灵活的储能解决方案的潜力.
- 这项工作为可穿戴电子应用中的先进超级电容铺平了道路.
关键词:
电化学性能 电化学性能灵活性 灵活性 灵活性尼科 (NiCo) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo4) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO3 (NiCo2) 2S4@MnO2 (NiCo2) 2S4@MnO3 (NiCo2) 2S4 (NiCo2) 2S4 (NiCo2) 2S4 (NiCo2) 2S4 (NiCo2) 2S4 (NiCo2) 3S4 (NiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNiNi有一个空缺的氧气.超级电容器 超级电容器更多相关视频
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