Dual-ion pre-inserted Mo glycerate template for constructing NiMo-OS core–shell structure with boosting performance in zinc ions hybrid supercapacitors  

作　　者：Shujing Chen Zhengpeng Xiang Zhenyu Xiao Kun-Peng Wang Qi Zhang Lei Wang 

机构地区：[1]State Key Laboratory Base of Eco-Chemical Engineering,International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China

出　　处：《Nano Research》2023年第5期6922-6932,共11页纳米研究（英文版）

基　　金：the National Natural Science Foundation of China(Nos.21702116,51772162,and 52072197);the 111 Project of China(No.D20017);Shandong Provincial Key Research and Development Program,China(No.2019GSF107087);Qingdao Postdoctoral Sustentation Fund,Youth Innovation and Technology Foundation of Shandong Higher Education Institutions,China(No.2019KJC004);Outstanding Youth Foundation of Shandong Province,China(No.ZR2019JQ14);Taishan Scholar Young Talent Program(No.tsqn201909114);Major Scientific and Technological Innovation Project(No.2019JZZY020405);Major Basic Research Program of Natural Science Foundation of Shandong Province(No.ZR2020ZD09).

摘　　要：Zinc ion hybrid supercapacitors(ZHS)have received much attention due to the enhanced potential window range and high specific capacity.However,the appropriate positive materials with high electrochemical performance are still a challenge.Herein,NH_(4)^(+)and glycerate anions pre-inserted Mo glycerate(N-MoG)spheres are synthesized and serve as the template to form NH_(4)^(+)intercalated Ni_(3)S_(2)/Ni_(3)O_(2)(OH)_(4)@MoS_(2)core–shell nanoflower(N-NiMo-OS)in-situ grown on nickel foam(NF)(N-NiMo-OS/NF)by sulfurization treatment.Compared with the product using traditional MoG as a template,N-NiMo-OS/NF inheriting a larger core structure from N-MoG delivers enhanced space for ions transport and volume expansion during the energy storage process,together with the synergistic effects of multi-components and the heterostructure,the as-prepared N-NiMo-OS/NF nanoflower exhibits excellent performance for the battery-type hybrid supercapacitors(BHS)and ZHS devices.Notably,the ZHS device delivers superior electrochemical performance to the BHS device,such as a higher specific capacity of 327.5 mAh·g^(−1)at 1 A·g^(−1),a preeminent energy density of 610.6 Wh·kg^(−1)at 1710 W·kg^(−1),long cycle life.The in-situ Raman,ex-situ X-ray photoelectron spectroscopy(XPS),theoretical calculation demonstrate the extra Zn^(2+)insertion/extraction storage mechanism provides enhanced electrochemical performance for ZHS device.Therefore,the dual-ion pre-inserted strategy can be extended for other advanced electrode materials in energy storage fields.

关 键 词：NH_(4)^(+)and glycerate anions pre-inserted Mo glycerate(N-MoG)spheres NH_(4)^(+)intercalated Ni_(3)S_(2)/Ni_(3)O_(2)(OH)_(4)@MoS_(2)core–shell nanoflower(N-NiMo-OS)in-situ grown on nickel foam(NF)(N-NiMo-OS/NF)nanoflower battery-type hybrid supercapacitors zinc ions hybrid supercapacitors 

分 类 号：TM53[电气工程—电器]