无定形固体
结晶度
共沉淀
材料科学
异质结
电催化剂
镍
化学工程
分解水
纳米技术
光电子学
催化作用
化学
结晶学
冶金
电极
复合材料
光催化
物理化学
电化学
工程类
生物化学
作者
Jinhong Ren,Yunmei Du,Yilin Wang,Su Zhao,Bo Yang,Bin Li,Lei Wang
标识
DOI:10.1016/j.cej.2023.143993
摘要
Due to the vast difference in structure and the unique electronic state at the heterointerface, the amorphous/crystalline (a/c) heterostructure exhibits excellent potential in electrocatalysis. However, there are great challenges in constructing the material with ample a/c-heterointerfaces and controllably modulated a/c-heterointerface region through a simple one-step method. Herein, the a/c-RuCoMoyOx/NF (nickel foam) electrocatalyst is synthesized by the coprecipitation-microwave treatment method. Notably, microwave time directly affects the ratio of amorphous region (RuCoMoOx) to crystalline region (CoMoO4 and CoO). Surprisingly, the a/c-RuCoMoyOx/NF with abundant crystallinity/amorphous heterointerfaces exhibits the ultralow η10 values of 39 and 166 mV for HER and OER, which are 0.5-fold and 0.63-fold lower than that of Pt/C-NF and RuO2-NF benchmarks, respectively. Overall, this work provides a novel idea and convenient method for the construction of amorphous/crystalline heterointerfaces with modulated interface region, and guides the direction for the preparation of superior electrocatalysts by regulating the a/c-heterointerface region.
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