Lithium-ion hybrid capacitors(LIHCs)have drawn extensive attention in field of energy storage.However,the absence of appropriate electrode materials with rapid kinetics restricted the overall performance of the capacitors.Herein,hierarchical N,P-codoped hollow car-bon nanospheres coupling with WS2 nanosheets(N,P-codoped HCNS/WS2 NSs)were fabricated for boosting lithium storage materials.Specially,the WS2 nanosheets with several layers embedded in the N,P-codoped hollow carbon nanospheres could not only enhance the conduc-tivity of composites,but also provide abundant channels for the rapid transfer of ions.As a result,as-prepared N,P-codoped HCNS/WS2 NSs demonstrated superior rate performance and long-term cycling stability.The reversible discharge capacity of 725.2 mAh·g-1 could be preserved after 1000 cycles at a current density of 1.0 A·g-1.Fur-thermore,LIHCs devices were assembled by using N,P-codoped HCNS/WS2 NSs and activated carbon(AC)as the cathode and anode,which exhibited high energy density of 166.7 Wh·kg-1 and power density of 5312.4 W.kg-1.Last but not least,the capacity almost had no obvious deterioration after 6000 cycles at a high current density of 10.0 A·g-1.

Ze-Jun Zhao;Yu-Guang Chao;Fang Wang;Jia-Yi Dai;Yi-Fan Qin;Xiao-Bing Bao;Yong Yang;Shao-Jun Guo

State Key Laboratory of Solidification Processing,Center of Advanced Lubrication and Seal Materials,Northwestern Polytechnical University,Xi'an 710072,China;Department of Materials Science and Engineering,College of Engineering,Peking University,Beijing 100871,China

稀有金属（英文版）

[1]Ze-Jun Zhao;Yu-Guang Chao;Fang Wang;Jia-Yi Dai;Yi-Fan Qin;Xiao-Bing Bao;Yong Yang;Shao-Jun Guo-.Intimately coupled WS2 nanosheets in hierarchical hollow carbon nanospheres as the high-performance anode material for lithium-ion storage)[J].稀有金属（英文版）,2022(04):1245-1254

Intimately,LIHCs,HCNS

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