Search

Your search keyword '"Cai, Guangxu"' showing total 131 results
Start Over Author "Cai, Guangxu"
131 results on '"Cai, Guangxu"'

18. A highly efficient heterostructure nanorod bifunctional electrocatalyst for realizing enhanced overall water splitting at a large current density.

Author

Li, Derun, Wu, Shixin, Jiang, Tao, Huang, Shuangshuang, Wang, Zhaowu, Wu, Hengyi, Cai, Guangxu, and Ren, Feng

Abstract

Exploring efficient, low cost and stable electrocatalysts working at large current densities is crucial for upgrading the current industrial electrochemical water splitting. Herein, a novel FeS2/Fe–Ni3S2 heterostructure was successfully prepared via a simple one-step in situ hydrothermal vulcanization using F− regulation engineering. The FeS2/Fe–Ni3S2 heterostructure array exhibits low overpotentials for both the OER (180 mV @ 10 mA cm−2 and 300 mV @ 1 A cm−2) and the HER (105 mV @ 10 mA cm−2 and 344 mV @ 1 A cm−2) with high stability operating at 1 A cm−2 for 1000 h. In addition, the water-splitting system only needs 1.5 V to reach 10 mA cm−2 and shows prolonged stability of more than 1200 h at 1 A cm−2. The DFT calculations show that the electrons redistribute at the interface and favor the chemisorption of hydrogen and oxygen-containing intermediates. This work highlights a novel, low cost and practical electrode for industrial electrochemical water splitting. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

21. High hydrogen isotopes permeation resistance in (TiVAlCrZr)O multi-component metal oxide glass coating

Author

Hu, Lulu, primary, Zhong, Fen, additional, Zhang, Jun, additional, Zhao, Shijun, additional, Wang, Yongqiang, additional, Cai, Guangxu, additional, Cheng, Tao, additional, Wei, Guo, additional, Jia, Shuangfeng, additional, Zhang, Dongxun, additional, Yin, Ran, additional, Chen, Zhiquan, additional, Jiang, Changzhong, additional, and Ren, Feng, additional

Published
2022
Full Text
View/download PDF

29. Self‐Derivation and Surface Reconstruction of Fe‐Doped Ni3S2 Electrode Realizing High‐Efficient and Stable Overall Water and Urea Electrolysis.

Author

Li, Derun, Wan, Wenjing, Wang, Zhaowu, Wu, Hengyi, Wu, Shixin, Jiang, Tao, Cai, Guangxu, Jiang, Changzhong, and Ren, Feng

Subjects
WATER electrolysis, SURFACE reconstruction, DOPING agents (Chemistry), OXYGEN evolution reactions, HYDROGEN as fuel, ELECTROLYSIS, PHOTOELECTROCHEMICAL cells, HYDROGEN evolution reactions
Abstract

Exploring earth‐abundant, highly effective, and stable electrocatalysts for overall water and urea electrolysis is urgent and essential for developing hydrogen energy technology. Herein, a simple self‐derivation method is used to fabricate a Fe‐doped Ni3S2 electrode. The electrode exhibits an impressive trifunctional catalyst, with low overpotentials of 290, 198, and 254 mV at 100 mA cm−2 for the oxygen evolution reaction (OER), urea oxidation reaction (UOR), and hydrogen evolution reaction (HER). The durability is higher than 3500 h (146 days) at 100 mA cm−2 for the OER without obvious change. In situ Raman spectra reveal the incorporation of Fe inhibited S dissolution and facilitates the catalyst reconstruction. The density functional theory calculations indicate that the doping of Fe optimizes the adsorption of the rate‐determining step and the d‐band center is closer to the Fermi level, which accelerates the OER process. The two‐electrode electrolyzer needs the cell voltages of only 1.76 and 1.57 V to achieve a current density of 100 mA cm−2 and remarkable durability for more than 500 h at 100 and 500 mA cm−2 for overall water and urea splitting. This work holds great promise for industrial water and urea splitting applications. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

31. Ion Irradiation Inducing Oxygen Vacancy‐Rich NiO/NiFe2O4 Heterostructure for Enhanced Electrocatalytic Water Splitting

Author

Zhong, Huizhou, primary, Gao, Guoping, additional, Wang, Xuening, additional, Wu, Hengyi, additional, Shen, Shaohua, additional, Zuo, Wenbin, additional, Cai, Guangxu, additional, Wei, Guo, additional, Shi, Ying, additional, Fu, Dejun, additional, Jiang, Changzhong, additional, Wang, Lin‐Wang, additional, and Ren, Feng, additional

Published
2021
Full Text
View/download PDF

36. Smart 3D Network Nanocomposites Collect Irradiation-Induced “Trash”

Author

Tang, Jun, primary, Wei, Guo, additional, Cai, Xuecheng, additional, Hu, Shuanglin, additional, Shen, Tongde, additional, Cheng, Tao, additional, Yin, Ran, additional, Zhang, Jian, additional, Ruan, Xuefeng, additional, Yang, Bing, additional, Wang, Yongqiang, additional, Cai, Guangxu, additional, Jiang, Changzhong, additional, and Ren, Feng, additional

Published
2020
Full Text
View/download PDF

48. Synergistic effect of V/N codoping by ion implantation on the electronic and optical properties of TiO2

Author

Xu, Jinxia, primary, Chen, Chi, additional, Xiao, Xiangheng, additional, Liao, Lei, additional, Miao, Ling, additional, Wu, Wei, additional, Mei, Fei, additional, Stepanov, Andrey L., additional, Cai, Guangxu, additional, Liu, Yong, additional, Dai, Zhigao, additional, Ren, Feng, additional, Jiang, Changzhong, additional, and Liu, Jiarui, additional

Published
2014
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results