文献类型：期刊文献

英文题名：Achieving Dendrite-Free Composite Solid Polymer Electrolyte with Fast Ionic Transport via a Nitrogen-Doped Carbon Interfacial Layer

作者：Zhong, Yangyang[1];Lin, Yiting[1,2];Cai, Yunqi[1];Lian, Cheng[3];Liu, Honglai[1,3];Su, Haiping[3];Li, Jingkun[3]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn & Low Carbon Technol, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2026

卷号：65

期号：19

起止页码：9850

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20262120751639);WOS:【SCI-EXPANDED(收录号:WOS:001758517800001)】；

基金：This work was financially supported by the Shanghai Pilot Program for Basic Research (22TQ1400100-18), the National Key R&D Program of China (2022YFA1503501), and the Shanghai Basic Research Program "Natural Science Foundation" Project (25ZR1402106).

语种：英文

外文关键词：Carbon - Dissociation - Ethylene - Ionic conduction in solids - Lithium - Lithium batteries - Lithium compounds - Lithium deposits - Nitrogen - Solid electrolytes - Solid-State Batteries - Tantalum compounds

摘要：Composite solid electrolytes (CSEs) offer enhanced energy density and high safety for solid-state lithium batteries. However, the high ionic transport resistance and severe dendrite growth at the polymer/ceramic interface hinder the practical application of CSEs. In this work, we coated a thin layer of nitrogen-doped carbon onto Li6.4La3Zr1.4Ta0.6O12 (NC-LLZTO) to fabricate poly(ethylene oxide) (PEO)-based CSEs. The nitrogen-doped carbon intermediate layer minimizes interfacial resistance and promotes lithium salt dissociation, leading to accelerated Li+ transport across the polymer/ceramic interface. Therefore, the ionic conductivity of the NC-LLZTO CSE reaches 1.09 & times; 10(-4) S cm(-1) at 30 degrees C. Furthermore, the nitrogen-doped carbon layer effectively homogenizes the interfacial electric field, thereby inducing uniform lithium deposition and eliminating lithium dendrites. As a result, the Li/NC-LLZTO/LiFePO4 full battery exhibits superior rate and cycling performances of 105.60 mAh & centerdot;g(-1) at 5 C and 1200 cycles at 0.5 C, respectively. Our work provides valuable insights on interfacial engineering of polymer-based SPE.