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Bimetallic MOF-derived (CuCo)Se nanoparticles embedded in nitrogen-doped carbon framework with boosted electrochemical performance for hybrid supercapacitor
Materials Research Bulletin ( IF 5.4 ) Pub Date : 2020-12-24 , DOI: 10.1016/j.materresbull.2020.111196
Peiheng Sun , Jing Zhang , Jiajie Huang , Liang Wang , Peijia Wang , Chen Cai , Mixue Lu , Zhujun Yao , Yefeng Yang

As an important class of battery-type materials, transition metal selenides are widely investigated for application in hybrid supercapacitors. Herein, we report the two-step synthesis of bimetallic copper cobalt selenide nanoparticles embedded in N-doped carbon layers ((CuCo)Se/NC) by using metal-organic framework (MOF) as the functional templates. Benefitting from the Cu incorporation in CoSe matrix and integration of MOF-derived carbon layers, the optimized (CuCo)Se/NC electrode delivers a reasonably high specific capacity of 121.4 C/g at 1 A/g with outstanding rate capability and cycling stability. The full hybrid supercapacitor device based on the (CuCo)Se/NC electrode shows a maximum energy density of 16.3 Wh/kg at a power density of 155.3 W/kg with excellent long-term cycling stability over 5000 cycles.



中文翻译:

嵌入氮掺杂碳骨架中的双金属MOF衍生(CuCo)Se纳米粒子具有增强的混合超级电容器电化学性能

作为电池类材料的重要一类,过渡金属硒化物已广泛用于混合超级电容器中。在本文中,我们报告了使用金属有机骨架(MOF)作为功能模板,分步合成嵌入N掺杂碳层((CuCo)Se / NC)中的双金属硒化铜钴钴纳米颗粒。得益于将铜掺入CoSe基质中以及MOF衍生的碳层的整合,优化后的(CuCo)Se / NC电极在1 A / g时具有121.4 C / g的相当高的比容量,具有出色的倍率性能和循环稳定性。基于(CuCo)Se / NC电极的全混合超级电容器器件在155.3 W / kg的功率密度下显示出16.3 Wh / kg的最大能量密度,在5000次循环中具有出色的长期循环稳定性。

更新日期:2020-12-29
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