杂多铌氧簇物的研究进展
杨宗斐, 赵晓森, 李靖, 庄文昌
【无机化学学报】doi: 10.11862/CJIC.20230306
多铌氧簇聚物是多金属氧簇聚物的重要组成部分,具有丰富多样的结构类型,在碱催化、光催化产氢等方面具有广泛的应用前景,吸引了越来越多化学工作者的关注。本文系统地综述了主族元素(ⅢA/ⅣA/ⅤA/ⅥA族)为杂原子的杂多铌氧簇聚物和过渡元素(V/Fe/Cu)为杂原子的杂多铌氧聚合物的研究进展,主要包括化合物的合成策略、结构调控、性质及应用的探索。此外,对当前杂多铌氧簇聚物的发展所面临的挑战进行了总结,并对其后续的发展进行了展望。
关键词: 多铌氧簇, 多金属氧簇, 结构调控, 策略合成
Two-dimensional silica-modified polyethylene oxide solid polymer electrolyte to enhance the performance of lithium-ion batteries
Zhihong LUO, Yan SHI, Jinyu AN, Deyi ZHENG, Long LI, Quansheng OUYANG, Bin SHI, Jiaojing SHAO
【无机化学学报】doi: 10.11862/CJIC.20230444
Herein, the positively charged two-dimensional (2D) porous silica (PSN+) nanosheet was obtained by modifying the 2D silica obtained from acid-etched 2D vermiculite, and then the PSN+ was used as the filler of polyethylene oxide (PEO)-based solid polymer electrolytes (SPEs). Given the abundant positive charges, PSN+ effectively binds with the anions dissociated from lithium salts, thereby promoting lithium-ion transport and achieving a decent lithium-ion transference number. At 50 ℃, the PSN+-based SPEs demonstrated a higher ionic conductivity of 7.5×10-5 S·cm-1, lithium-ion transference number of 0.30, and a stable voltage window of 4.41 V. Consequently, the as-assembled LiFePO4||Li batteries delivered excellent initial discharge specific capacity of 155.7 mAh·g-1 at 0.2C with 97.1% capacity retention after 100 cycles at 50 ℃.
关键词: lithium-ion battery, solid polymer electrolyte, filler, two-dimensional silica

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