Dual-Functional Electrode Promoting Dendrite-Free and CO_(2) Utilization Enabled High-Reversible Symmetric Na-CO_(2) Batteries

作     者：Changfan Xu Jiajia Qiu Yulian Dong Yueliang Li Yonglong Shen Huaping Zhao Ute Kaiser Guosheng Shao Yong Lei Changfan Xu;Jiajia Qiu;Yulian Dong;Yueliang Li;Yonglong Shen;Huaping Zhao;Ute Kaiser;Guosheng Shao;Yong Lei

作者机构：Fachgebiet Angewandte NanophysikInstitut für Physik&IMN MacroNanoTechnische Universität Ilmenau 98693Ilmenau Germany Central Facility for Electron MicroscopyElectron Microscopy Group of Materials ScienceUlm UniversityUlm 89081Germany School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2024年第7卷第3期

页      面：123-132页

核心收录：

学科分类：0808[工学-电气工程] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：support from the German Research Foundation(DFG:LE 2249/15-1) the Sino-German Center for Research Promotion(GZ1579) support from the China Scholarship Council(No.202106370041) 

主　　题：CO_(2)cathode dendrite free electrocatalysis Na metal anode symmetric CO_(2)batteries 

摘      要：Sodium-carbon dioxide(Na-CO_(2))batteries are regarded as promising energy storage technologies because of their impressive theoretical energy density and CO_(2)reutilization,but their practical applications are restricted by uncontrollable sodium dendrite growth and poor electrochemical kinetics of CO_(2)*** suitable multifunctional electrodes for dendritefree anodes and kinetics-enhanced CO_(2)cathodes is considered one of the most important ways to advance the practical application of Na-CO_(2)***,RuO2 nanoparticles encapsulated in carbon paper(RuCP)are rationally designed and employed as both Na anode host and CO_(2)cathode in Na-CO_(2)*** outstanding sodiophilicity and high catalytic activity of RuCP electrodes can simultaneously contribute to homogenous Na+distribution and dendrite-free sodium structure at the anode,as well as strengthen discharge and charge kinetics at the *** morphological evolution confirmed the uniform deposition of Na on RuCP anode with dense and flat interfaces,delivering enhanced Coulombic efficiency of 99.5%and cycling stability near 1500 ***,Na-CO_(2)batteries with RuCP cathode demonstrated excellent cycling stability(350 cycles).Significantly,implementation of a dendrite-free RuCP@Na anode and catalytic-site-rich RuCP cathode allowed for the construction of a symmetric Na-CO_(2)battery with long-duration cyclability,offering inspiration for extensive practical uses of Na-CO_(2)batteries.