Journal
ACS APPLIED NANO MATERIALS
Volume 6, Issue 21, Pages 20278-20287Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.3c04231
Keywords
transition metal sulfides; porous carbon; supercapacitors; composite materials; energystorage
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Transition metal sulfides (TMSs) are highly promising electrode materials for supercapacitors. Optimizing the structure of the electrode materials to expose more active sites is a crucial strategy for boosting the electrochemical performance.
Transition metal sulfides (TMSs) are considered to be highly promising electrode materials for supercapacitors. Optimizing the structure of the electrode materials to expose more active sites is a crucial strategy for boosting the electrochemical performance. Herein, we developed carbon/metal sulfide composite electrode materials by anchoring nickel-cobalt bimetallic sulfide nanosheets (NCS) on chitosan-derived heteroatom-doped hierarchical porous carbon (CPC). The composite materials exhibited a uniform distribution and significantly increased active sites, which led to a substantial enhancement of the electrochemical properties. The optimal sample NCS/CPC-3 exhibited a brilliant capacitive performance and great cycling stability. Also, the assembled asymmetric supercapacitor presented a robust energy output of 37.1 W h kg(-1) at 800.0 W kg(-1). In addition, NCS/CPC-3 also demonstrated potential in the field of small-molecule detection. Our findings supply a unique perspective on effectively boosting the electrochemical properties of TMS-based electrode materials.
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