Ultra-homogeneous dense Ag nano layer enables long lifespan solid-state lithium metal batteries

作     者：Yaning Liu Tianqi Yang Ruyi Fang Chengwei Lu Ruojian Ma Ke Yue Zhen Xiao Xiaozheng Zhou Wenkui Zhang Xinping He Yongping Gan Jun Zhang Xinhui Xia Hui Huang Xinyong Tao Yang Xia 

作者机构：College of Materials Science and EngineeringZhejiang University of TechnologyHangzhou 310014ZhejiangChina Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang ProvinceInstitute of Optoelectronic Materials and DevicesChina Jiliang UniversityHangzhou 310018ZhejiangChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2024年第96卷第9期

页      面：110-119页

核心收录：

学科分类：080603[工学-有色金属冶金] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 070205[理学-凝聚态物理] 070204[理学-等离子体物理] 070202[理学-粒子物理与原子核物理] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(22279116 and U20A20253) the Natural Science Foundationof Zhejiang Province(LD22E020006 and LQ24E020012) the Science and Technology Development of Zhejiang Province(2023C01231 and 2024C01095) the Baima Lake Laboratory Joint Funds of the Zhejiang Provincial Natural Science Foundation(LBMHD24E020001) the China Postdoctoral Science Foundation(2020M671785 and 2020T130597) the Fundamental Research Funds for the Provincial Universities of Zhejiang(2022YW54) 

主　　题：Silvernano layer Poly(ethylene oxide) Solid polymer electrolyte Succinonitrile Lithium metal battery 

摘      要：The unstable electrolyte/lithium(Li)anode interface has been one of the key challenges in realizing high energy density solid-state lithium metal batteries(LMBs)***,a dense and uniform silver(Ag)nano interlayer with a thickness of∼35 nm is designed accurately by magnetron sputtering technology to optimize the electrolyte/Li anode *** Ag nano layer reacts with Li metal anode to in-situ form Li-Ag alloy,thus enhancing the physical interfacial contact,and further improving the interfacial wettability and *** particular,the Li-Ag alloy is inclined to form AgLi phase proved by cryo-TEM and DFT,effectively preventing SN from continuously“attackingthe Li metal anode due to the lower adsorption of succinonitrile(SN)molecules on AgLi than that of pure Li metal,thereby significantly reinforcing the interfacial ***,the enhanced physical and chemical stability of electrolyte/Li anode interface promotes the homogeneous deposition of Li^(+)and inhibits the dendrite *** Li-symmetric cell maintains stable operation for up to 1700 h and the cycling stability of LiFePO_(4)|SPE|Li full cell is remarkably improved at room temperature(capacity retention rate of 91.9%for 200 cycles).This work opens an effective way for accurate and controllable interface design of long lifespan solid-state LMBs.