2,2′-Bis(3-hydroxy-1,4-naphthoquinone)/CMK-3 nanocomposite as cathode material for lithium-ion batteries

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题名:	2,2′-Bis(3-hydroxy-1,4-naphthoquinone)/CMK-3 nanocomposite as cathode material for lithium-ion batteries
作者:	鄭芳怡;Li, Hao;Duan, Wenchao;Zhao, Qing;Cheng, Fangyi;Liang, Jing;Chen, Jun
贡献者:	地球科學學院大氣科學學系
日期:	2014-02-01
上传时间:	2026-04-21 13:55:08 (UTC+8)
出版者:	Royal Society of Chemistry
摘要:	摘要： An inorganic–organic nanocomposite with the filling of 2,2′-bis(3-hydroxy-1,4-naphthoquinone) (H 2 bhnq) in the pores of CMK-3 mesoporous carbon, which was synthesized by a simple impregnation method, was employed as a new cathode material for rechargeable lithium-ion batteries (LIBs). The characterization of the nanocomposite by wide-angle and low-angle X-ray diffraction, Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed the efficient loading of H 2 bhnp within the nanosized pores of CMK-3 carbon. The nanocomposite delivered an initial discharge capacity of 308.6 mAh g −1 at 0.1 C rate and a capacity retention of 202.6 mAh g −1 after 50 cycles. The reversible capacities were 124.0 mAh g −1 at a higher rate of 10 C. The enhanced cycling stability and high-rate capability is attributed to the fact that neat H 2 bhnq was distributed in the nanochannels of the conductive carbon framework CMK-3. This constrains the dissolution of the embedded H 2 bhnq. The results imply that the nanoconfinement with the pores of inorganic materials such as CMK-3 to fill organic active materials is important to improve the electrochemical performance of lithium-ion batteries. 出版日期： 2014-01-01 出處： Inorganic chemistry frontiers, 2014-01, Vol.1 (2), p.193-199 資源來源： Royal Society of Chemistry 識別號： ISSN: 2052-1553 識別號： EISSN: 2052-1553 識別號： DOI: 10.1039/C3QI00076A
显示于类别:	[大氣科學學系] 期刊論文

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