期刊
VACUUM
卷 165, 期 -, 页码 179-185出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2019.04.033
关键词
Polypyrrole; Hybrid supercapacitor; MoO2; MnO; N-doped carbon
资金
- National Natural Science Foundation of China [51575135, 51622503, U1537206, 51621091]
Herein, a general strategy is provided to construct N-doped carbon-confined MoO2 and MnO by the hydro thermal process, polymerization process and carbonation process, which serves as negative electrode and positive electrode for hybrid supercapacitors. The N-doped carbon as shell can provide fast electron pathways and short ion diffusion paths, resulting in the improved performances at the high rates. Consequently, the obtained N-doped carbon-confined MoO2 and MnO possess the good electrochemical performances, including high specific capacitance, excellent cycling stability and good rate capability. Furthermore, the as-fabricated hybrid supercapacitor using N-doped carbon-confined MoO2 and MnO shows a high energy density up to 44.82 Wh kg(-1) at a power density of 900 W kg(-1), as well as good cycling performance. This work may provide a general strategy for constructing high-performance energy storage devices.
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