【摘 要】
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In this work,we report a high-performance self-standing supercapacitor electrode of mixed nickel manganese sulfides(NMSs)with a cracked-bark shape grown by one-step electrochemical deposition on activated carbon cloth(ACC).The electrode possesses outstand
【机 构】
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Key Laboratory of Special Function Materials&Structure Design of the Ministry of Education,and Schoo
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In this work,we report a high-performance self-standing supercapacitor electrode of mixed nickel manganese sulfides(NMSs)with a cracked-bark shape grown by one-step electrochemical deposition on activated carbon cloth(ACC).The electrode possesses outstanding electrochemical properties,including a high specific capacitance of up to 3142.8 F g-1 at 1.0 A g-1,the high-rate performance(～1206.8 F g-1 at 60.0 A g-1),and cycle stability(～92.3％capacitance retention after 8000 cycles at 8 A g-1).An asymmetric supercapacitor assembled using NMSs on ACC as the cathode,activated carbon on carbon cloth as the anode and 1.0 mol L-1 KOH as the electrolyte delivers a high energy density of 111.2Whkg-1 at 800.0 W kg-1 and the prominent cycling performance of～93.2％capacitance retention after 10000 cycles at 5 A g-1 with the Columbic efficiency of around 100％during these 10000 cycles.The high performance and facile preparation indicate that the NMSs on ACC hold a huge potential as the electrode for supercapacitors.
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