文献类型：期刊文献

英文题名：Confining MoS2/C nanoparticles on two-dimensional graphene sheets for high reversible capacity and long-life potassium ions batteries

作者：Li, Jing[1,2];Hu, Feng[1,2];Wei, Hui[1,2];Hei, Jinpei[1,2];Yin, Yanjun[1,2];Liu, Guoan[5];Wang, Nannan[1,2];Wei, Hehe[3,4]

机构：[1]Chaohu Univ, Dept Educ Anhui Prov, Engn Technol Ctr, Hefei 238024, Peoples R China;[2]Chaohu Univ, Coll Chem & Mat Engn, Engn Res Ctr High frequency Soft Magnet Mat & Cera, Hefei 238024, Peoples R China;[3]East China Univ Sci & Technol, Ctr Computat Chem, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Res Inst Ind Catalysis, 130 Meilong Rd, Shanghai 200237, Peoples R China;[5]Hefei Ecriee Tamura Elect Co Ltd, Hefei 230088, Peoples R China

年份：2023

卷号：250

外文期刊名：COMPOSITES PART B-ENGINEERING

收录：;EI(收录号：20230213353650);WOS:【SCI-EXPANDED(收录号:WOS:000910853200003)】；

基金：This work was supported by National Natural Science Foundations of China (22102057, 21905032) and Shanghai Sailing Program (21YF1409400) , Anhui Provincial Natural Science Foundation (2108085QE197) , Key Projects of Natural Science Research in univer- sities of Anhui Province (KJ2020A0675, KJ2021A1023) , Special Project of Engineering Center of Chaohu University (XLY-202114) , Startup Research Fund of Chaohu University (KYQD-202009) , the Key Research and Development Plan of Anhui Province (Nos. 202003a05020051) , Academic funding project by Department of Education of Anhui Prov- ince for top-notch talents in colleges and universities (NO. gxbjZD2022060) . The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the char- acterizations and Feringa Nobel Prize Scientist Joint Research Center. We also acknowledge the support of Chao Wang from Shiyanjia lab ( www.Shiyanjia.com ) .

语种：英文

外文关键词：MoS2; Potassium-ion batteries; Two-dimensional structure; Ultra-long lifespan

摘要：Benefiting from the unique layer structure and large interlayer spacing, the transition metal dichalcogenides have been regarded as promising anode materials to host K ions and widely explored in potassium ion batteries (PIBs). However, the low conductivity and large volume variation decline the cycling capacity and stability. It is still challenge to develop high performance anode to storage K+. Herein, the MoS2 nanoparticles anchored onto graphene sheet were synthesized (MoS2-C/rGO) through facile "one-step redox reaction" and following sulfi-dation method. Impressively, MoS2-C/rGO displayed superb cycling capability with a high reversible capacity of 405.25 mAh/g after 100 cycles at 0.1 A/g, accompanied with remarkable rate performance, outperforming than MoS2-C and MoS2. Most importantly, the ultra-long working life over 2000 cycles with a stable capacity of 161.67 mAh/g at 2 A/g was achieved in MoS2-C/rGO. The two-dimensional structure, rGO sheet and N, P co -doped C matrix of MoS2-C/rGO play great role on providing abundant ions storage sites, increasing conduc-tivity and suppressing volume expansion, leading to high specific capacity, superior rate performance and cycling stability in PIBs. The ex-situ XPS revealed the conversion reaction mechanism for MoS2 during cycling. Accordingly, our work provides a new insight to design alternative anodes for PIBs and is significant to the application of the new generation secondary batteries.