Exploring the experimental study and density functional theory calculations of symmetric and asymmetric chalcogen atoms interacted molybdenum dichalcogenides for lithium-ion batteries  

作　　者：Dhanasekaran Vikraman Sajjad Hussain Zeesham Abbas K.Karuppasamy Woo-Seok Kang P.Santhoshkumar A.Kathalingam Jongwan Jung Hyun-Seok Kim 

机构地区：[1]Division of Electronics and Electrical Engineering,Dongguk University-Seoul,Seoul 04620,Republic of Korea [2]Department of Nanotechnology and Advanced Materials Engineering,Sejong University,Seoul 05006,Republic of Korea [3]Hybrid Materials Center(HMC),Sejong University,Seoul 05006,Republic of Korea [4]Millimeter-wave Innovation Technology(MINT)Research Center,Dongguk University-Seoul,Seoul 04620,Republic of Korea

出　　处：《Journal of Materials Science & Technology》2023年第31期44-56,共13页材料科学技术（英文版）

基　　金：supported by the Mid-career Researcher Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Science and ICT(No.2019R1A2C2086747)and the research program of Dongguk University in 2022(No.S-2022-G0001-00016).

摘　　要：Two-dimensional asymmetric chalcogen atoms attached to Janus nanoparticles have fascinated research attention owing to their distinctive properties and characteristics for various applications.This paper proposed a facile synthesis to produce efficient molybdenum-based symmetric and asymmetric chalcogens bounded by X Mo X and TeMo X nanostructures.Subsequently,the fabricated X Mo X and TeMo X nanostruc-tures were employed as anodes for lithiumion batteries(LIBs).Assembled LIBs using TeMoS and TeMoSe Janus anodes achieved 2610 and 2073 mAh g^(-1)reversible capacity at 0.1 A g^(-1),respectively for the halfcell configuration,which is outstanding performance compared with previous reports.Superior rate capability performances at 0.1-20 A g^(-1)and exceptional cycling solidity confirmed high charge and discharge capacities for TeMo X Janus lithium-ion battery anodes.In addition,the full cell device with TeMoS//LiCoO_(2)configuration explored the discharge capacity of 1605 mAh g^(-1)at 0.1 A g^(-1)which suggests their excellent electrochemical characteristics.The density functional theory approximations established the significance of assembled symmetric and asymmetric chalcogen atoms interacted with X Mo X and TeMo X anode materials for LIBs.Thus,the present investigation supports a new approach to creating two-dimensional materials based on asymmetric chalcogen atoms with core metal to effectively increase desirable energy storage characteristics.

关 键 词：TeMoS TeMoSe JANUS Li-ion battery 

分 类 号：TM912[电气工程—电力电子与电力传动]