材料科学
阳极
电解质
原位
Boosting(机器学习)
图层(电子)
化学工程
电极
分析化学(期刊)
纳米技术
物理化学
色谱法
有机化学
化学
机器学习
计算机科学
工程类
作者
Gashahun Gobena Serbessa,Bereket Woldegbreal Taklu,Yosef Nikodimos,Nigusu Tiruneh Temesgen,Zabish Bilew Muche,Semaw Kebede Merso,Tsung-Her Yeh,Yajun Li,Weisheng Liao,Chia‐Hsin Wang,She‐Huang Wu,Wei‐Nien Su,Chun–Chen Yang,Bing‐Joe Hwang
标识
DOI:10.1021/acsami.3c14763
摘要
Due to its good mechanical properties and high ionic conductivity, the sulfide-type solid electrolyte (SE) can potentially realize all-solid-state batteries (ASSBs). Nevertheless, challenges, including limited electrochemical stability, insufficient solid–solid contact with the electrode, and reactivity with lithium, must be addressed. These challenges contribute to dendrite growth and electrolyte reduction. Herein, a straightforward and solvent-free method was devised to generate a robust artificial interphase between lithium metal and a SE. It is achieved through the incorporation of a composite electrolyte composed of Li6PS5Cl (LPSC), polyethylene glycol (PEG), and lithium bis(fluorosulfonyl)imide (LiFSI), resulting in the in situ creation of a LiF-rich interfacial layer. This interphase effectively mitigates electrolyte reduction and promotes lithium-ion diffusion. Interestingly, including PEG as an additive increases mechanical strength by enhancing adhesion between sulfide particles and improves the physical contact between the LPSC SE and the lithium anode by enhancing the ductility of the LPSC SE. Moreover, it acts as a protective barrier, preventing direct contact between the SE and the Li anode, thereby inhibiting electrolyte decomposition and reducing the electronic conductivity of the composite SE, thus mitigating the dendrite growth. The Li|Li symmetric cells demonstrated remarkable cycling stability, maintaining consistent performance for over 3000 h at a current density of 0.1 mA cm–2, and the critical current density of the composite solid electrolyte (CSE) reaches 4.75 mA cm–2. Moreover, the all-solid-state lithium metal battery (ASSLMB) cell with the CSEs exhibits remarkable cycling stability and rate performance. This study highlights the synergistic combination of the in-situ-generated artificial SE interphase layer and CSEs, enabling high-performance ASSLMBs.
科研通智能强力驱动
Strongly Powered by AbleSci AI