<p> Designing materials with an appropriate (nano) architecture could prove to be an effective strategy to improve several electrochemical properties to yield high-energy storage devices for their practical applications. Here, a two-fold approach of choosing an... ...
Nanoscale. 2025 May 6. doi: 10.1039/d5nr01502b Q15.12025
Energy harvesting from NiCo2S4/CoxSy nanoflakes: a two-fold strategy by morphology control and using redox-additive electrolytes
NiCo2S4/CoxSy纳米薄片的能源采集：通过形态控制和使用红/黑氧化剂电解液的双管齐下策略 翻译改进
Love Bansal 1, Deb Kumar Rath 1, Shivansh Raj Pandey 1, Bhumika Sahu 1, Nikita Ahlawat 1, Subin Kaladi Chondath 1, Rajesh Kumar 1 2
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DOI: 10.1039/d5nr01502b PMID: 40326232
摘要 中英对照阅读
设计具有适当（纳米）结构的材料可能是提高电化学性能以实现高能量存储设备实用应用的有效策略。为此，采用了一种双管齐下的方法，即选择适当的合成方法（脉冲电沉积）和氧化还原添加剂电解质。为获得多孔NiCo₂S₄/CoₓSy纳米片，设计了一种定制的脉冲电沉积技术，该技术显示出改善的能量存储应用（作为假电容器）。通过选择一种优化的电解质（1M KOH 和 0.05 M K₃[Fe(CN)₆]），进一步增强了在电极形式下的比电容，其中后者用作氧化还原添加剂。多功能电极表现出高达约7000 mF cm⁻² 的高电容值。将氧化还原添加剂加入电解质中增加了扩散系数（4倍），从而提高了材料的能量存储性能。改进的电化学特性被用于设计一种原型固态对称超级电容器装置，该装置在高压密度和能量密度下表现出380 F g⁻¹ 的电容值，并且在高电流密度下连续切换2000次后仍保持100%的电容保留率。此外还演示了该设备在实际现场条件下的性能表现。这项工作显著表明，通过采用定制脉冲电沉积技术和优化氧化还原添加剂电解质来改变表面形态是一种有效的方法，可以增强电化学能量存储性能。
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