Facile Synthesis of Metal-Organic Framework-Derived CoSe2 Nanoparticles Embedded in the N-Doped Carbon Nanosheet Array and Application for Supercapacitors.,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Facile Synthesis of Metal-Organic Framework-Derived CoSe2 Nanoparticles Embedded in the N-Doped Carbon Nanosheet Array and Application for Supercapacitors.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-02-13 , DOI: 10.1021/acsami.9b22606
Chenxu Miao ₁ , Xihao Xiao ₁ , Yan Gong ₁ , Kai Zhu ₁ , Kui Cheng ₁ , Ke Ye ₁ , Jun Yan ₁ , Dianxue Cao ₁ , Guiling Wang ₁ , Panpan Xu _{1,

2}

Affiliation

Metal-organic framework (MOF)-derived composites of transition metal oxides and porous carbon show great potential for energy storage applications. Selenylation is an effective strategy to improve the electrochemical properties of electrode materials. A facile one-step derivation and selenylation of MOFs is proposed here to obtain CoSe2 nanoparticles embedded into an N-doped carbon skeleton material (CoSe2/NC). Moreover, the composite is directly grown on nickel foam as nanosheet arrays, rather than on other materials as powders. The CoSe2/NC electrode with special construction exhibits a high capacity of 120.2 mA h g-1 at 1 A g-1 and an excellent cyclic ability of 8% loss after 10,000 cycles. An asymmetric supercapacitor CoSe2/NC-NF//AC displays a maximum energy density of 40.9 W h kg-1 at 980 W kg-1. Moreover, the device has demonstrated that it can successfully charge a mobile phone. The outstanding performance indicates promising potential of CoSe2/NC-NF electrodes for supercapacitors.

中文翻译：

嵌入N掺杂碳纳米片阵列中的金属有机骨架衍生的CoSe2纳米粒子的简便合成及其在超级电容器中的应用。

过渡金属氧化物和多孔碳的金属有机骨架（MOF）衍生复合材料在储能应用中显示出巨大潜力。硒化是改善电极材料电化学性能的有效策略。本文提出了一种简单的MOF一步衍生和硒化方法，以获得嵌入N掺杂碳骨架材料（CoSe2 / NC）中的CoSe2纳米颗粒。此外，复合材料直接在泡沫镍上以纳米片阵列的形式生长，而不是在其他材料上以粉末的形式生长。具有特殊结构的CoSe2 / NC电极在1 A g-1时具有120.2 mA h g-1的高容量，在10,000次循环后具有8％损耗的出色循环能力。不对称超级电容器CoSe2 / NC-NF // AC在980 W kg-1时显示最大能量密度为40.9 W h kg-1。此外，该设备已证明可以成功为手机充电。出色的性能表明CoSe2 / NC-NF电极在超级电容器方面的潜力很大。

更新日期：2020-02-13

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南