文献类型：期刊文献

英文题名：Scalable molten salt strategy synthesis of large-size 2D MoS 2(1-x) Se 2x alloy for boosting potassium-ion storage performance

作者：Li, Jing[1];Yang, Lei[2];Liang, Tianxiang[1];Wei, Hui[1];Li, Honglin[1];Hu, Feng[1];Hei, Jinpei[1];Liu, Yefeng[1];Wang, Nannan[1];Wei, Hehe[3,4]

机构：[1]Chaohu Univ, Engn Res Ctr High Frequency Soft Magnet Mat & Cera, Engn Tech Ctr Preparat & Applicat Ind Ceram Anhui, Sch Chem & Mat Engn, 1 Bantang Rd, Hefei 238000, Peoples R China;[2]West Anhui Univ, Sch Mat & Chem Engn, Key Lab Biomimet Sensor & Detecting Technol Anhui, Luan 237012, Anhui, 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

年份：2024

卷号：38

外文期刊名：MATERIALS TODAY CHEMISTRY

收录：;EI(收录号：20241615915019);WOS:【SCI-EXPANDED(收录号:WOS:001235515500001)】；

基金：This work was supported by National Natural Science Foundations of China (22102057, 21905032, 52302058, 12104343) and Shanghai Sailing Program (21YF1409400) , Special Project of Engineering Center of Chaohu University (XLY-202114) , Horizontal Research Project of Chaohu University National (hxkt20230129) , Major Project of Natural Science Research in universities of Anhui Province (2023AH040301) . The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the characterizations 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：Molten-salt method; Ternary alloy; Two-dimensional materials; Potassium ion batteries; Micrometer-scale sheets

摘要：Owing to the lamellar structure and large theoretical specific capacity, transition metal dichalcogenides (TMDs) are promising anodes for potassium ion batteries (KIBs). However, the development and application of TMDs are greatly confined by the inferior conductivity and structure integrity. Herein, a two-dimensional (2D) MoS 2(1- x) Se 2x ternary alloy supported by carbon nanosheets (MoS 2(1-x) Se 2x /C) is designed to boost their electrochemical performance in KIBs. Owing to the unique 2D structure, the assistance of carbon, as well as the synergistic effect of S and Se, the MoS 2(1-x) Se 2x /C gets many obvious merits as: abundant K + diffusion path, enhanced structure stability and improved conductivity. Thus, our designed MoS 2(1-x) Se 2x /C obtains the high reversible capacity (279.93 mAh/g at 0.2 A/g), excellent rate performance and long-cycling capability for KIBs. Even cycling for 500 times at the high current density of 1 A/g, a large reversible capacity of 257.94 mAh/g is kept. Moreover, the energy storage mechanisms of MoS 2(1-x) Se 2x during potassiation and depotassiation process are revealed. Our work provides a new insight into the modification of TMDs anode for potassium ion batteries.