纳米团簇
材料科学
纳米材料
多硫化物
电催化剂
电化学
纳米技术
化学工程
吸附
金属
电极
化学
电解质
物理化学
冶金
工程类
作者
Kai Sun,Yujun Fu,Taishu Sekine,Haruna Mabuchi,Sakiat Hossain,Qiang Zhang,Dequan Liu,Saikat Das,Deyan He,Yuichi Negishi
出处
期刊:Small
[Wiley]
日期:2023-08-25
标识
DOI:10.1002/smll.202304210
摘要
Due to their high designability, unique geometric and electronic structures, and surface coordination chemistry, atomically precise metal nanoclusters are an emerging class of functional nanomaterials at the forefront of materials research. However, the current research on metal nanoclusters is mainly fundamental, and their practical applications are still uncharted. The surface binding properties and redox activity of Au24 Pt(PET)18 (PET: phenylethanethiolate, SCH2 CH2 Ph) nanoclusters are herein harnessed as an high-efficiency electrocatalyst for the anchoring and rapid conversion of lithium polysulfides in lithium-sulfur batteries (LSBs). Au24 Pt(PET)18 @G composites are prepared by using the large specific surface area, high porosity, and conductive network of graphene (G) for the construction of battery separator that can inhibit polysulfide shuttle and accelerate electrochemical kinetics. Resultantly, the LSB using a Au24 Pt(PET)18 @G-based separator presents a high reversible specific capacity of 1535.4 mA h g-1 for the first cycle at 0.2 A g-1 and a rate capability of 887 mA h g-1 at 5 A g-1 . After 1000 cycles at 5 A g-1 , the capacity is 558.5 mA h g-1 . This study is a significant step toward the application of metal nanoclusters as optimal electrocatalysts for LSBs and other sustainable energy storage systems.
科研通智能强力驱动
Strongly Powered by AbleSci AI