%0 Journal Article
%A Wang, Xiaowei
%A Li, Minxia
%A Chang, Zheng
%A Yang, Yaqiong
%A Wu, Yuping
%A Liu, Xiang
%D 2015
%T Co3O4@MWCNT Nanocable as Cathode with Superior Electrochemical Performance
for Supercapacitors
%U https://acs.figshare.com/articles/journal_contribution/Co_sub_3_sub_O_sub_4_sub_MWCNT_Nanocable_as_Cathode_with_Superior_Electrochemical_Performance_for_Supercapacitors/2209795
%R 10.1021/am5062272.s001
%2 https://acs.figshare.com/ndownloader/files/3845320
%K Co 3O
%K orientation
%K capacitance
%K Superior Electrochemical Performance
%K MWCNT
%K Co 3O nanocable
%K performance
%K Co 3O Nanocable
%K scan rate increases
%K SCE
%K 0.5 M KOH solution
%X Using
a simple hydrothermal procedure, cobalt oxide (Co3O4) with preferred orientation along (220) planes is in situ
prepared and coated on MWCNT. The prepared Co3O4@MWCNT nanocable shows superior electrochemical performance as cathode
material for aqueous supercapacitors in 0.5 M KOH solution. Its redox
peaks retain the well-defined shapes even when the scan rate increases
to 200 mV/s. Its specific capacitance is high, 590 F/g at 15 A/g and
510 F/g even at 100 A/g within the potential range from −0.2
to 0.58 V (vs SCE). There is no capacitance fading after 2000 full
cycles. This excellent performance is superior to the pristine and
the reported Co3O4, which is ascribed to the
unique nanocable structure with orientation.
%I ACS Publications