Regulating electrochemical performance of Cu_(7)S_(4) electrodes via ligand engineering in copper cluster precursors  

作　　者：Zhou Wu Lu-Fan Wang Xiao-Fei Liu Ren-Wu Huang Rui Wang Guoqiang Sun Shuang-Quan Zang 

机构地区：[1]Henan Key Laboratory of Crystalline Molecular Functional Materials, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China

出　　处：《Nano Research》2024年第11期9746-9755,共10页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21825106,22209154,and 22001236);Zhongyuan Thousand Talents(Zhongyuan Scholars)Program of Henan Province(No.234000510007);the Program for Innovative Research Team(in Science and Technology)in Universities of Henan Province(No.19IRTSTHN022)。

摘　　要：Cu-based chalcogenide materials exhibit significant promise for the development of Zn-metal-free anode materials for aqueous Zn-ion batteries (AZIBs). Here, we present the establishment of an efficient and universal strategy that capitalizes on the pyrolysis of copper nanoclusters to fabricate conversion-type Cu_(7)S_(4) anodes engineered for AZIBs, showcasing outstanding electrochemical performance. Furthermore, by exploiting ligand engineering, we enable the precise control of both the type of molecular fragments generated during nanocluster pyrolysis, thus enabling the manipulation of vacancy concentrations and ion/electron migration in the resultant pyrolysis products. In contrast to the direct pyrolysis of metal salts and ligands, the products derived from copper nanoclusters exhibit enhanced specific capacity, rate performance, and overall stability. This research offers valuable insights for the development of novel electrode materials through the pyrolysis of atomically precise nanoclusters.

关 键 词：metal nanocluster Zn-ion battery pyrolysis tracking rocking-chair batteries 

分 类 号：O64[理学—物理化学]