Ternary Co3O4/NiO/reduced graphene oxide hybrid composites with improved electrochemical properties

被引:24
作者
Wu, Juan [1 ]
Zhou, Jianheng [1 ]
Lin, Qi [1 ]
Luo, Lei [1 ]
Lu, Qingshan [1 ]
机构
[1] Inner Mongolia Univ, Sch Phys Sci & Technol, Inner Mongolia Key Lab Nanosci & Nanotechnol, Hohhot 010021, Peoples R China
关键词
Co3O4/NiO; Reduced graphene oxide; Hybrid composites; Electrochemical property; CO3O4; NANOWIRES; PERFORMANCE; SUPERCAPACITOR; FOAM;
D O I
10.1016/j.ceramint.2019.05.035
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Transition metal oxides are considered to be ideal electrode materials for supercapacitors, but they usually suffer from poor conductivity and low capacitance. Herein, Co3O4 and NiO nanoparticles are decorated on reduced graphene oxide (rGO) to form ternary Co3O4/NiO/rGO composites using hydrothermal method. The study focuses on the dependence of the electrochemical properties on the molar ratio of cobalt to nickel, calcination temperature and rGO loading. Upon calcination at 400 degrees C, the Co3O4/NiO composites with a molar ratio of 1:3 display superior electrochemical performance. The adding of rGO to Co3O4/NiO composites can effectively enhance the dispersion of nanoparticles and improve the electrochemical performance overall. Compared with rGO and Co3O4/NiO, the high specific capacitance of 325 F/g at a current density of 0.5 A/g and good rate capability are achieved for ternary composites. The excellent electrochemical performance is probably attributed to the feature of cobalt and nickle oxides nanoparticles highly dispersed on rGO nanosheets. This can increase the electron conductivity, provide more exposed electroactive sites and facilitate the faradaic redox processes.
引用
收藏
页码:15394 / 15399
页数:6
相关论文
共 23 条
[1]   Synergistic interaction between embedded Co3O4 nanowires and graphene papers for high performance capacitor electrodes [J].
Choi, Jaeho ;
Kim, Myeongjin ;
Kim, Jooheon .
RSC ADVANCES, 2017, 7 (38) :23793-23801
[2]   Supercapacitors Technical Requirements for New Applications [J].
Conte, M. .
FUEL CELLS, 2010, 10 (05) :806-818
[3]   Morphology Controlled Synthesis of Nanoporous Co3O4 Nanostructures and Their Charge Storage Characteristics in Supercapacitors [J].
Deori, Kalyanjyoti ;
Ujjain, Sanjeev Kumar ;
Sharma, Raj Kishore ;
Deka, Sasanka .
ACS APPLIED MATERIALS & INTERFACES, 2013, 5 (21) :10665-10672
[4]   Facile synthesis of Co3O4 nanowires grown on hollow NiO microspheres with superior electrochemical performancee [J].
Fan, Meiqing ;
Ren, Bo ;
Yu, Lei ;
Song, Dalei ;
Liu, Qi ;
Liu, Jingyuan ;
Wang, Jun ;
Jing, Xiaoyan ;
Liu, Lianhe .
ELECTROCHIMICA ACTA, 2015, 166 :168-173
[5]   Electrochemistry of ZnO@reduced graphene oxides [J].
Hao, Junxing ;
Ji, Liudi ;
Wu, Kangbing ;
Yang, Nianjun .
CARBON, 2018, 130 :480-486
[6]   Carbon materials for electrochemical capacitors [J].
Inagaki, Michio ;
Konno, Hidetaka ;
Tanaike, Osamu .
JOURNAL OF POWER SOURCES, 2010, 195 (24) :7880-7903
[7]   Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications [J].
Khan, Mujeeb ;
Tahir, Muhammad Nawaz ;
Adil, Syed Farooq ;
Khan, Hadayat Ullah ;
Siddiqui, M. Rafiq H. ;
Al-warthan, Abdulrahman A. ;
Tremel, Wolfgang .
JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (37) :18753-18808
[8]   Graphene-Based Supercapacitor with an Ultrahigh Energy Density [J].
Liu, Chenguang ;
Yu, Zhenning ;
Neff, David ;
Zhamu, Aruna ;
Jang, Bor Z. .
NANO LETTERS, 2010, 10 (12) :4863-4868
[9]   Hierarchical α-Ni(OH)2 grown on CNTs as a promising supercapacitor electrode [J].
Luo, Yang ;
Li, Yingai ;
Wang, Dongxue ;
Zhai, Chengbo ;
Yang, Tianye ;
Zhang, Mingzhe .
JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 743 :1-10
[10]   High-performance solid state asymmetric supercapacitor based on electrochemically decorated 3D network-like Co3O4 architecture on NiO nanoworms [J].
Moradlou, Omran ;
Ansarinejad, Hanieh ;
Hosseinzadeh, Maryam ;
Kazemi, Hojjat .
JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 755 :231-241