文献类型：期刊文献

英文题名：Coordinating Interface Polymerization with Micelle Mediated Assembly Towards Two-Dimensional Mesoporous Carbon/CoNi for Advanced Lithium-Sulfur Battery

作者：Huang, Zheng[1];Ma, Dongsheng[1];Nian, Pei[2];Zhou, Yu[1];Wang, Dong[3,4];Gong, Xueqing[3,4];Wang, Zheng[2];Yue, Qin[1]

机构：[1]Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Peoples R China;[2]Ningxia Univ, Sch Chem & Chem Engn, State Key Lab High efficiency Utilizat Coal & Gree, Yinchuan 750021, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Adv Mat, Ctr Computat Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：19

期号：27

外文期刊名：SMALL

收录：;EI(收录号：20231313815033);WOS:【SCI-EXPANDED(收录号:WOS:000993561700001)】；

基金：Acknowledgements This work was supported by the National Natural Science Foundation of China (22273021, 21903025), the National Youth Top-notch Talent Support Program of China, and the Sichuan Science and Technology Program (no. 2020YJ0243), Shanghai Science and Technology Development Funds (22QA1402900), Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (Grant No. 2022-K28).

语种：英文

外文关键词：bimetallic CoNi nanoparticles; catalytic polysulfides conversion; lithium-sulfur batteries; ordered mesoporous N-doped carbon

摘要：Lithium-sulfur battery has attracted significant attention by virtues of their high theoretical energy density, natural abundance, and environmental friendliness. However, the notorious shuttle effect of polysulfides intermediates severely hinders its practical application. Herein, a novel 2D mesoporous N-doped carbon nanosheet with confined bimetallic CoNi nanoparticles sandwiched graphene (mNC-CoNi@rGO) is successfully fabricated through a coordinating interface polymerization and micelle mediated co-assembly strategy. mNC-CoNi@rGO serves as a robust host material that endows lithium-sulfur batteries with a high reversible capacity of 1115 mAh g(-1) at 0.2 C after 100 cycles, superior rate capability, and excellent cycling stability with 679.2 mAh g(-1) capacity retention over 700 cycles at 1 C. With sulfur contents of up to 5.0 mg cm(-2), the area capacity remains to be 5.1 mAh cm(-2) after 100 cycles at 0.2 C. The remarkable performance is further resolved via a series of experimental characterizations combined with density functional theory calculations. These results reveal that the ordered mesoporous N-doped carbon-encapsulated graphene framework acts as the ion/electron transport highway with excellent electrical conductivity, while bimetallic CoNi nanoparticles enhance the polysulfides adsorption and catalytic conversion that simultaneously accelerate the multiphase sulfur/polysulfides/sulfides conversion and inhibit the polysulfides shuttle.