Modulating amorphous/crystalline heterogeneous interface in RuCoMoyOx grown on nickel foam to achieve efficient overall water splitting
Modulating amorphous/crystalline heterogeneous interface in RuCoMoyOx grown on nickel foam to achieve efficient overall water splitting
复制标题
DOI：
10.1016/j.cej.2023.143993
复制
发表时间：
2023-08
影响因子：
15.1
通讯作者：
Jinhong Ren;Yunmei Du;Yilin Wang;Shigang Zhao;Bo Yang;Bin Li;Lei Wang
中科院分区：
文献类型：
--
作者：
Jinhong Ren;Yunmei Du;Yilin Wang;Shigang Zhao;Bo Yang;Bin Li;Lei Wang
由于结构上的巨大差异和异质界面上独特的电子态，非晶/结晶（a/c）异质结构在电催化方面表现出优异的潜力。然而，通过简单的一步方法构建具有丰富的a/c-异质界面和可控调制的a/c-异质界面区域的材料存在很大的挑战。本文中，通过共沉淀-微波处理方法合成a/c-RuCoMoyOx/NF（泡沫镍）电催化剂。值得注意的是，微波时间直接影响非晶区（RuCoMoOx）与结晶区（CoMoO 4和CoO）的比例。令人惊讶的是，具有丰富结晶度/非晶异质界面的a/c-RuCoMoyOx/NF表现出HER和OER的超低η 10值39和166 mV，分别比Pt/C-NF和RuO 2-NF基准低0.5倍和0.63倍。总之，本工作为构建界面区域可调的非晶/晶异质界面提供了一种新颖的思路和简便的方法，并为通过调控a/c异质界面区域制备上级电催化剂指明了方向。
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 (CoMoO4and CoO). Surprisingly, the a/c-RuCoMoyOx/NF with abundant crystallinity/amorphous heterointerfaces exhibits the ultralow η10values 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.