南方科技大学知识苑(SUSTech KC): 一种表面工程活化的析氢电催化剂及其制备方法与应用

Title	一种表面工程活化的析氢电催化剂及其制备方法与应用
Alternative Title	Surface engineering activated hydrogen evolution electrocatalyst as well as preparation method and application thereof
Author	邬家臻; 蔡卫征; 焦体文 ; 胡昕萌
First Inventor	邬家臻
Original applicant	南方科技大学
First applicant	南方科技大学
Address of First applicant	518055 广东省深圳市南山区桃源街道学苑大道1088号
Current applicant	南方科技大学
Address of Current applicant	518055 广东省深圳市南山区桃源街道学苑大道1088号 (广东,深圳,南山区)
First Current Applicant	南方科技大学
Address of First Current Applicant	518055 广东省深圳市南山区桃源街道学苑大道1088号 (广东,深圳,南山区)
Application Number	CN202211296263.2
Application Date	2022-10-21
Open (Notice) Number	CN115558958A
Date Available	2023-01-03
Status of Patent	实质审查
Legal Date	2023-01-20
Subtype	发明申请
SUSTech Authorship	First
Abstract	本发明公开的一种表面工程活化的析氢电催化剂及其制备方法与应用，制备方法包括步骤：提供RTX粉末；向RTX粉末中加入有机酸和/或有机酸盐进行第一次表面工程处理，使得所述有机酸和/或有机酸盐与所述RTX粉末发生金属螯合作用，得到第一产物；向第一产物中加入碱溶液进行第二次表面工程处理，得到析氢电催化剂。利用有机酸、有机酸盐对镧系金属具有较强的螯合能力，有效刻蚀RTX颗粒的表面镧系元素，再采用碱溶液对Si和Ge有较强的清除能力，清除RTX表面的Si和/或Ge，使得金属间电子化物仍然保持原来的晶体结构和电子化物特性的同时，表面得到极大优化，比表面积得到数倍至数百倍的提升，从而得到超高析氢活性的催化剂。
Other Abstract	The invention discloses a surface engineering activated hydrogen evolution electrocatalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: providing RTX powder; organic acid and/or organic acid salt are/is added into the RTX powder for first-time surface engineering treatment, so that the organic acid and/or organic acid salt and the RTX powder are subjected to metal chelation, and a first product is obtained; and adding an alkali solution into the first product for secondary surface engineering treatment to obtain the hydrogen evolution electrocatalyst. Organic acid and organic acid salt have high chelating capacity on lanthanide metal, lanthanide elements on the surfaces of RTX particles are effectively etched, then Si and/or Ge on the surfaces of the RTX particles are removed with high removing capacity on Si and Ge through an alkaline solution, intermetallic electronides still keep the original crystal structure and electronide characteristics, meanwhile, the surfaces are greatly optimized, and the surface quality of the RTX particles is improved. The specific surface area is increased by several times to hundreds of times, so that the catalyst with ultrahigh hydrogen evolution activity is obtained.
CPC Classification Number	Y02E60/36
IPC Classification Number	C25B11/091 ; C25B11/065 ; C25B1/04
INPADOC Legal Status	（ENTRY INTO FORCE OF REQUEST FOR SUBSTANTIVE EXAMINATION）[2023-01-20][CN]
INPADOC Patent Family Count	1
Extended Patent Family Count	1
Priority date	2022-10-21
Patent Agent	双瑞晨
Agency	深圳市君胜知识产权代理事务所(普通合伙)
URL	[Source Record]
Data Source	PatSnap
Document Type	Patent
Identifier	http://kc.sustech.edu.cn/handle/2SGJ60CL/532943
Department	Department of Materials Science and Engineering
Recommended Citation GB/T 7714	邬家臻,蔡卫征,焦体文,等. 一种表面工程活化的析氢电催化剂及其制备方法与应用.

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