Continuous high-temperature rapid nanomanufacturing of electrocatalysts  

作　　者：Xiaoyang Wang Ziyi Luo Baihua Cui Ziqi Fu Yanchang Liu Weidi Liu Jia Ding Jianrong Zeng Yanan Chen Wenbin Hu 

机构地区：[1]School of Materials Science and Engineering,Tianjin University,Tianjin 300350,China [2]Australian Institute for Bioengineering and Nanotechnology,The University of Queensland,St.Lucia,Brisbane 4072,Australia [3]Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China [4]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China

出　　处：《Nano Research》2025年第1期225-235,共11页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.52171219 and 92372107).

摘　　要：Encapsulating metal nanoparticles in carbon shells(Metal@C)to enhance catalytic activity and stability has been certified feasible.However,most existing methods for preparing Metal@C are complex,time-consuming,and lack of scalability.In this study,a novel method that couples the high-temperature shock(HTS)with ultrasonic spray pyrolysis is reported,which can realize facile and scalable production of various Metal@C through the pyrolysis of glucose and metal chloride mixtures.The proposed HTS ultrasonic spray pyrolysis offers several advantages,including compact size,short reaction time(~120 ms),and uniform heating.Taking the Ni@C-40 nanocomposite as an example,the ultrasmall Ni nanoparticles(~10 nm)with thin carbon protective shells(~2 nm)are uniformly dispersed in the carbon matrix and applied for oxygen evolution reaction(OER)in alkaline media.The Ni@C-40 optimized by tuning the thickness of carbon shell exhibits significantly enhanced OER activity with low overpotential of 242 mV at 10 mA·cm^(-2) and stability,which is attributed to the optimized interactions between Ni nanoparticles and carbon shells.This method also shows promise for continuous pyrolysis synthesis of various extreme materials at ultra-high temperatures using alternative electric heating materials.

关 键 词：ultrasonic spray pyrolysis high-temperature shock carbon shell oxygen evolution reaction Metal@C nanocomposite 

分 类 号：TB383[一般工业技术—材料科学与工程] O643.36[理学—物理化学]