青岛科技大学  English 
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副教授 硕士生导师  

教师拼音名称:yujianhua

学历:博士研究生

学位:工学博士

职称:副教授

毕业院校:中科院上海硅酸盐研究所

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2020-06-08 青岛科技大学毕业生最喜爱的老师

2019-12-31 青岛科技大学先进工作者

2016-12-31 青岛科技大学先进工作者

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Metal-organic frameworks supported Ni-Co-S nanosheet arrays for advanced hybrid supercapacitors

关键字:NICKEL-COBALT SULFIDE; ELECTROCHEMICAL ENERGY-STORAGE; NICO2S4 NANOTUBE ARRAYS; ELECTRODE MATERIALS; BIFUNCTIONAL ELECTROCATALYST; CARBON NANOTUBES; PERFORMANCE; FOAM; CONSTRUCTION; EFFICIENT

摘要:Constructing self-supporting porous electrode material with abundant electrochemical active sites can effectively improve the energy storage capacity of supercapacitors. Herein, a novel electrode material (NCS@Co-ZIF/NF) is developed by depositing zeolitic imidazolate frameworks (Co-ZIF) on nickel foams (NF), which is adopted as a precursor (Co-ZIF/NF) to electrodeposit nickel-cobalt sulfides (NCS). The nanosheet arrays with cross-porous structures provide NCS@Co-ZIF/NF with excellent electrochemical characteristics, including a high specific capacity of 144.4 mAh g-1 at the current density of 1 mA cm-2, 60.5% capacity retention at 50 mA cm-2, and superb long-term cycle stability. Furthermore, NCS@Co-ZIF/NF//AC hybrid supercapacitor is fabricated by using NCS@Co-ZIF/NF as pos-itive electrodes and activated carbon (AC) as negative electrodes, which exhibits a high energy density of 33.9 Wh kg-1 at a power density of 145 W kg-1.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

卷号:47

期号:92

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