@article{Wang2025, 
author = {Xiaoyang Wang and Ziyi Luo and Baihua Cui and Ziqi Fu and Yanchang Liu and Weidi Liu and Jia Ding and Jianrong Zeng and Yanan Chen and Wenbin Hu},
title = {Continuous high-temperature rapid nanomanufacturing of electrocatalysts},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {1},
pages = {94907056},
keywords = {oxygen evolution reaction, carbon shell, high-temperature shock, ultrasonic spray pyrolysis, Metal@C nanocomposite},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907056},
doi = {10.26599/NR.2025.94907056},
abstract = {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.}
}