材料科学
锂(药物)
电解质
法拉第效率
纳米复合材料
准固态
电化学
单体
化学工程
气凝胶
电化学窗口
介孔材料
离子电导率
表面改性
纳米技术
复合材料
聚合物
有机化学
物理化学
电极
化学
工程类
内分泌学
医学
催化作用
色素敏化染料
作者
Seonho Kim,Ho Kyun Jung,Puji Lestari Handayani,Taehoon Kim,Byung Mun Jung,U Hyeok Choi
标识
DOI:10.1002/adfm.202210916
摘要
Abstract For the development of all‐solid‐state lithium metal batteries (LMBs), a high‐porous silica aerogel (SA)‐reinforced single‐Li + conducting nanocomposite polymer electrolyte (NPE) is prepared via two‐step selective functionalization. The mesoporous SA is introduced as a mechanical framework for NPE as well as a channel for fast lithium cation migration. Two types of monomers containing weak‐binding imide anions and Li + cations are synthesized and used to prepare NPEs, where these monomers are grafted in SA to produce SA‐based NPEs (SANPEs) as ionomer ‐in‐framework . This hybrid SANPE exhibits high ionic conductivities (≈10 −3 S cm −1 ), high modulus (≈10 5 Pa), high lithium transference number (0.84), and wide electrochemical window (>4.8 V). The resultant SANPE in the lithium symmetric cell possesses long‐term cyclic stability without short‐circuiting over 800 h under 0.2 mA cm −2 . Furthermore, the LiFePO 4 |SANPE|Li solid‐state batteries present a high discharge capacity of 167 mAh g −1 at 0.1 C, good rate capability up to 1 C, wide operating temperatures (from −10 to 40 °C), and a stable cycling performance with 97% capacity retention and 100% coulombic efficiency after 75 cycles at 1 C and 25 °C. The SANPE demonstrates a new design principle for solid‐state electrolytes, allowing for a perfect complex between inorganic silica and organic polymer, for high‐energy‐density LMBs.
科研通智能强力驱动
Strongly Powered by AbleSci AI