One-step synthesis of zinc oxide-carbon microspheres decorated with multi-voids and carbon nanotubes via spray pyrolysis for enhanced stability in lithium metal anodes  

作　　者：Yeong Beom Kim Hyo Yeong Seo Thillai Govindaraja Senthamaraikannan Jung Sang Cho Yun Chan Kang Dong-Hee Lim Gi Dae Park 

机构地区：[1]Department of Advanced Materials Engineering,Chungbuk National University,Chungdae-ro 1,Seowon-Gu,Cheongju,Chungbuk 28644,Republic of Korea [2]Department of Materials Science and Engineering,Korea University,Anam-Dong,Seongbuk-Gu,Seoul 136-713,Republic of Korea [3]Department of Environmental Engineering,Chungbuk National University,Chungdae-ro 1,Seowon-Gu,Cheongju,Chungbuk 28644,Republic of Korea [4]Department of Engineering Chemistry,Chungbuk National University,Chungdae-ro 1,Seowon-Gu,Cheongju,Chungbuk 28644,Republic of Korea

出　　处：《Journal of Materials Science & Technology》2024年第25期95-107,共13页材料科学技术(英文版)

基　　金：supported by the National Research Foundation of Korea(NRF)grant funded by the Korean government(MEST)(No.NRF-2022R1F1A1070886);supported by the National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)(No.RS-2023-00217581);supported by the Commercialization Promotion Agency for R&D Outcomes(COMPA)grant funded by the Korean Government(Ministry of Science and ICT)(No.RS-2023-00304768);supported by the Chungbuk National University BK21 program(2023).

摘　　要：The lithium metal anode has emerged as a promising candidate for future high-energy-density batter-ies.However,its practical application is hindered by the uncontrollable growth of lithium dendrites.In this study,we developed carbon nanotube(CNT)-decorated ZnO-C microspheres,containing multi-voids,as a lithiophilic host material for a stable lithium metal anode using a one-pot synthesis spray pyrolysis process.These microspheres offer ample space for accommodating lithium metal due to the presence of multi-voids.Additionally,the uniform distribution of ZnO nanocrystals and CNTs facilitates homogeneous lithium nucleation without dendrite formation.To understand the role of ZnO nanocrystals in achieving a stable lithium metal anode,density functional theory(DFT)calculations were employed,which demon-strated superior adsorption energies for lithium atoms as well as favorable electronic properties of the ZnO component.Consequently,the ZnO-C-CNT microspheres exhibit a stable lithium plating/stripping behavior,characterized by high Coulombic efficiency and the maintenance of stable voltage profiles in a symmetric cell configuration.When coupling this anode with the LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)cathode,the assem-bled full cell demonstrates excellent cycling stability and high-rate capability,indicating its potential for practical applications.

关 键 词：Lithiophilic materials ZnO CNT Porous structure Spray pyrolysis 

分 类 号：TB3[一般工业技术—材料科学与工程]