Enhancing interfacial Li+transport and dielectric properties in poly(ethylene oxide)-based all-solid electrolytes via inactive g-C_(3)N_(4)nanosheets filler incorporation

作     者：Zhixuan Li Weijian Zhang Yue Chen Qiaoquan Lin Long Zhang Jianming Tao Oleg V.Kolosov Jiaxin Li Yingbin Lin Zhigao Huang Zhixuan Li;Weijian Zhang;Yue Chen;Qiaoquan Lin;Long Zhang;Jianming Tao;Oleg V.Kolosov;Jiaxin Li;Yingbin Lin;Zhigao Huang

作者机构：College of Physics and EnergyFujian Normal UniversityFujian Provincial Key Laboratory of Quantum Manipulation and New Energy MaterialsFuzhou 350117China Fujian Provincial Engineering Technical Research Centre of Solar-Energy Conversion and Stored EnergyFuzhou 350117China Fujian Provincial Collaborative Innovation Centre for Advanced High-Field Superconducting Materials and EngineeringFuzhou 350117China Physics DepartmentLancaster UniversityLancaster LA14YBUK The Faraday InstitutionQuad OneBecquerel AvenueHarwell CampusDidcotOX110RAUK 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2024年第183卷第16期

页      面：184-192页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.61574037,11874113,11344008,11204038,22179020,and 52172243) the Science Foundation of the Fujian Province(No.2023J01521) the Foreign Scienceand Technology Cooperation Project of Fuzhou Science and Technology Bureau(No.2021-Y-086) the Industry-University Cooperation Project of Fujian Province(No.2020H06027) the Faraday Institution(No.FIRG018) EPSRC Project EP/V00767X/1 

主　　题：Lithium metal anode Lithium dendrite Dielectric force microscopy All-solid-state electrolyte Lithium ion batteries 

摘      要：The advancement of all-solid-state Li metal batteries(ASSLMBs)faces a major challenge in the growth of lithium dendrites on the anode-electrolyte *** this study,we propose a dual-filler approach using poly(ethylene oxide)(PEO)-based solid polymer electrolytes(SPEs)that combine Li_(1.4)Al_(0.4)Ti_(1.6)(PO_(4))_(3)(LATP)ion-conductive particles with graphitic carbon nitride(g-C_(3)N_(4))*** through sec-ond harmonic resonance enhanced electrostatic force microscopy and critical current density(CCD)tests reveal that the g-C_(3)N_(4)additives form nano-capacitors at the SPE-lithium interface,effectively reducing sudden changes in current *** distribution of relaxation time constant(DRT)measurements confirms that the g-C_(3)N_(4)filler suppresses uncontrolled Li dendrite growth,effectively mitigating battery aging caused by anode interfacial ***,X-ray photoelectron spectroscopy(XPS)anal-ysis indicates that the nitrogen-containing organic groups in g-C_(3)N_(4)are reduced to form a stable interfa-cial layer with lithium *** a result of these enhancements,the electrolyte demonstrates remarkable interfacial stability in Li/Li symmetrical cells at 0.65 mA/cm2 and delivers promising performance in assembled Li-LiFePO4 batteries,achieving a reversible capacity of 121.6 mAh/g at 1 C after 200 *** findings highlight the potential of dual-filler PEO-based SPEs for promoting interfacial lithium-ion transport in all-solid-state Li metal batteries.