首页|PVP/PAN-derived porous carbon fiber for zinc-ion hybrid supercapacitors

PVP/PAN-derived porous carbon fiber for zinc-ion hybrid supercapacitors

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Porous carbon fibers are promising cathodes for zinc-ion hybrid supercapacitors(ZHSs)owing to their abundant active sites,great conductivity,and stable physi-cal and chemical properties.However,designing a proper preparation technique to regulate the microstructure of carbon fibers still remains a great challenge.Here,a polyvinylpyrrolidone/po-lyacrylonitrile(PVP/PAN)-derived porous carbon fiber is developed via the PVP/PAN blend electrospinning and hydrothermal selective PVP removal strategy.The hydrothermal selective PVP removal strategy can effectively avoid a cross-linking between PVP and PAN during the traditional stabilization at air atmo-sphere.In PVP/PAN-derived porous carbon fiber,the suf-ficient micropores provide abundant space for the Zn2+storage,whereas the proper mesopores contribute to the fast ion transfer.These hierarchical porous structures endow ZHSs with high specific capacity and high-rate performance.The ZHS assembled with the optimal PVP/PAN-derived porous carbon fiber(PVP-PANC-0.8)dis-plays an outstanding specific capacity of 208 mAh·g-1,high rate capability(49.5％)from 0.5 to 5 A·g-1,and 72.25％capacity retention after 10,000 cycles at 0.5 A·g-1.

Zinc-ion hybrid supercapacitorsPorous carbon fibersHierarchical porous structuresElectrospinning

Shu-Hua Yang、Wen-Qing Fu、Yan-Wei Cui、Bing-Qiang Cao

展开 >

Materials Center for Energy and Photoelectrochemical Conversion,School of Material Science and Engineering,University of Jinan,Jinan 250022,China

Shandong Provincial Natural Science FoundationNational Natural Science Foundation of ChinaUniversity of Jinan Science and Technology Planning ProjectEducation Bureau of Jinan,China

ZR2022ME18151702123XKY2034JNSX2023015

2024

10.1007/s12598-024-02682-0

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(7)
  • 2