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高电化学性能超级电容器的空调 (Ni,Co) Se2纳米板具有加速载体分离

Jibo Jiang¹, Jiaqian Guan¹, Shilong Wang¹

¹Faculty of Chemical Engineering and Energy Technology, Shanghai Institute of Technology, Haiquan Road 100, 201418 Shanghai, PR China.

Journal of colloid and interface science

|July 24, 2025

概括

在 (Ni,Co) Se2纳米薄膜中的空缺可以提高超级电容器的性能. 这种空缺工程方法提高了先进的储能器件的能量密度和电化学活性.

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:

设计有空隙工程的多孔纳米板是高能超级电容器的关键.
职位空缺对电子结构和电化学活动的确切影响需要进一步调查.

研究的目的:

探索空缺对 (Ni,Co) Se2纳米板电子结构和电化学性能的影响.
开发一种使用ZIF-L转换创造高性能超级电容材料的新方法.

主要方法:

使用ZIF-L前体和空位工程合成富含空位 (Ni,Co) Se2纳米片.
使用BET分析,密度函数理论 (DFT) 计算,紫外线光谱学和莫特-肖特基图表进行了表征.
混合超级电容器设备的制造和测试.

主要成果:

空缺增加了特定表面积,并暴露了更多活跃的地点.
空隙缩小了带隙,增强了载体密度,并提高了 (Ni,Co) Se2.2 的导电性.
由此产生的VSe-(Ni,Co) Se2具有很高的特定容量 (1011C g−1在1A g−1) 和出色的稳定性.
一个混合超级电容器在750W kg-1.1时实现了68.13Wh kg-1的能量密度.

结论:

空位工程是一种有效的策略,可以提高超级电容器 (Ni,Co) Se2纳米板的电化学性能.
ZIF-L转换方法为制造先进的储能材料提供了新的途径.
这项研究提供了对空置对材料性能和设备性能影响的见解.

关键词:

密度函数理论密度函数理论混合型超级电容器是什么有几个职位空缺.过渡金属的化物.

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