文献类型：期刊文献

英文题名：Fabrication of porous imidazole polymerized ionic liquids with fast ion diffusing kinetics for super lithiation anode materials in lithium-ion batteries

作者：Wang, Yeji[1];Yang, Gege[1];Jiang, Fei[2];Qiu, Tianpei[1];Liu, Qian[1];Zhou, Le[1];Yang, Chaofan[1];Huang, Junjie[1];Dai, Guoliang[3]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Math Informat Coll, Shaoxing 312000, Peoples R China;[3]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, Suzhou 215009, Peoples R China

年份：0

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：SCI-EXPANDED(收录号：WOS:000825021300001)、、EI(收录号：20223012412088)、Scopus(收录号：2-s2.0-85134709614)、WOS

基金：This work is supported by the National Natural Science Foundation of China (No. 21875142 and 21203135), and the computing center for Fudan University and Compute Canada are acknowledged for computer time.

语种：英文

外文摘要：Porous imidazole polymerized ionic liquids (PILs-Im) with fast Li+ diffusion kinetics and numerous molecular pores have been used as anodes in lithium-ion batteries for the first time. In situ FTIR, ex situ XPS and DFT calculations indicate that the N atoms in aromatic rings and methylene C react with Li+ to form N-Li and C-Li bonds, realizing a specific capacity of 846.6 mA h g(-1) at 100 mA g(-1) with super lithiation in Li-0.5(C/N). PILs-Im also exhibit excellent cycling stability (598.7 mA h g(-1) at 1.0 A g(-1)) after 500 cycles, and a superior rate capability of 165 mA h g(-1) at 10 A g(-1). The excellent lithium storage performance could be attributed to the ionic skeleton allowing fast Li+ diffusion, abundant micropores facilitating the filtration of liquid electrolyte, and large cross-linking system with strong endurance to the volume variation of Li+ insertion. Polymerized ionic liquids give a new route to provide traditional electrodes with a high Li+ diffusion coefficient.