文献类型：期刊文献

英文题名：3D holey-graphene frameworks cross-linked with encapsulated mesoporous amorphous FePO4 nanoparticles for high-power lithium-ion batteries

作者：Mo, Runwei[1,2];Rooney, David[3];Sun, Kening[2];Wang, Jian Nong[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200030, Peoples R China;[2]Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150001, Peoples R China;[3]Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT9 5AG, Antrim, North Ireland

年份：2021

卷号：417

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20211010057672);WOS:【SCI-EXPANDED(收录号:WOS:000653229500157)】；

基金：This research was supported by National Key R&D Program of China (2018YFA0208404), National Natural Science Foundation of China (U1362104), Innovation Program of Shanghai Municipal Education Commission, and Shanghai Pujiang Program (20PJ1402500).

语种：英文

外文关键词：3D holey-graphene frameworks; mesoporous FePO4 nanoparticles; High-mass-loading electrode; High-power lithium-ion batteries

摘要：The nanostructured design of electrode materials is a potential strategy to enhance the electrochemical performance of lithium-ion batteries but are usually limited to electrodes with the low mass loading, which rapidly diminish in the total energy-power-density of practical device. Herein, we develop an effective solution for designing 3D holey-graphene frameworks cross-linked with encapsulated mesoporous amorphous FePO4 nano-particles through microemulsion system. High-mass-loading electrodes with high reversible capacity (156 mA h g(-1) under 0.5C), ultra-high rate capability (76 mA h g 1 under 50C), and outstanding cycle stability (>95% reversible capacity retention over 500 cycles) were achieved. Adaption of such material leads to high-mass-loading electrodes with energy and power density as high as 152 W h Kg(-1) and 71 W h Kg(-1) at 152 W Kg(-1) and 3550 W Kg(-1), respectively, which represents a key step in promoting practical applications. This study provides an innovative approach to design high-energy-power electrode material in advanced electrochemical energy storage device.