文献详情
Facile fabrication of binder-free reduced graphene oxide/MnO2/Ni foam hybrid electrode for high-performance supercapacitors
文献类型：期刊
通讯作者：Qin, YJ (reprint author), Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China.
期刊名称：JOURNAL OF ALLOYS AND COMPOUNDS影响因子和分区
年：2020
卷：812
ISSN：0925-8388
关键词：MnO2; Graphene aerogel; Electrochemical deposition; Supercapacitor; Binder-free
所属部门：化学系
摘要：A novel three-dimensional reduced graphene oxide aerogel and MnO2 (rGO/MnO2) hybrid is prepared via a mild method and freeze-drying treatment, followed by an electrodeposition process. The characterization results reveal that the deposited MnO2 is homogeneously anchored on the graphene sheets, which is served as binder-free electrode material to fabricate high-performance supercapacitor. The specific capacitance of rGO/MnO2 on Ni foam reaches 288 F g(-1) at 0.5 A g(-1). The assembled symmetrical ...More
A novel three-dimensional reduced graphene oxide aerogel and MnO2 (rGO/MnO2) hybrid is prepared via a mild method and freeze-drying treatment, followed by an electrodeposition process. The characterization results reveal that the deposited MnO2 is homogeneously anchored on the graphene sheets, which is served as binder-free electrode material to fabricate high-performance supercapacitor. The specific capacitance of rGO/MnO2 on Ni foam reaches 288 F g(-1) at 0.5 A g(-1). The assembled symmetrical rGO/MnO2/Ni supercapacitor exhibits a maximum energy density of 26.82 Wh kg(-1) and a maximum power density of 8.61 kW kg(-1), whose capacitance retention maintains 94.7% over 1000 cycles. Moreover, it can successfully activate different LEDs after being charged. These appreciable performances are primarily put down to the cooperative effect of porous structure of rGO/MnO2 and pseudocapacitive property of MnO2, which provides adequate electroactive sites and facilitates the electron/ion transfer during the electrochemical processes. (C) 2019 Elsevier B.V. All rights reserved. ...Hide

DOI：10.1016/j.jallcom.2019.152124
百度学术：Facile fabrication of binder-free reduced graphene oxide/MnO2/Ni foam hybrid electrode for high-performance supercapacitors
语言：外文
被引频次：1
基金：National Key R&D Program of China [2018YFA0208701]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21773305]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities; Research Funds of Renmin University of China [16XNLQ04]
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