TY - JOUR
T1 - Interfacial water engineering boosts neutral water reduction
AU - Sun, Kaian
AU - Wu, Xueyan
AU - Zhuang, Zewen
AU - Liu, Leyu
AU - Fang, Jinjie
AU - Zeng, Lingyou
AU - Ma, Junguo
AU - Liu, Shoujie
AU - Li, Jiazhan
AU - Dai, Ruoyun
AU - Tan, Xin
AU - Yu, Ke
AU - Liu, Di
AU - Cheong, Weng Chon
AU - Huang, Aijian
AU - Liu, Yunqi
AU - Pan, Yuan
AU - Xiao, Hai
AU - Chen, Chen
N1 - Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Hydrogen evolution reaction (HER) in neutral media is of great practical importance for sustainable hydrogen production, but generally suffers from low activities, the cause of which has been a puzzle yet to be solved. Herein, by investigating the synergy between Ru single atoms (RuNC) and RuSex cluster compounds (RuSex) for HER using ab initio molecular dynamics, operando X-ray absorption spectroscopy, and operando surface-enhanced infrared absorption spectroscopy, we establish that the interfacial water governs neutral HER. The rigid interfacial water layer in neutral media would inhibit the transport of H2O*/OH* at the electrode/electrolyte interface of RuNC, but the RuSex can promote H2O*/OH* transport to increase the number of available H2O* on RuNC by disordering the interfacial water network. With the synergy of RuSex and RuNC, the resulting neutral HER performance in terms of mass-specific activity is 6.7 times higher than that of 20 wt.% Pt/C at overpotential of 100 mV.
AB - Hydrogen evolution reaction (HER) in neutral media is of great practical importance for sustainable hydrogen production, but generally suffers from low activities, the cause of which has been a puzzle yet to be solved. Herein, by investigating the synergy between Ru single atoms (RuNC) and RuSex cluster compounds (RuSex) for HER using ab initio molecular dynamics, operando X-ray absorption spectroscopy, and operando surface-enhanced infrared absorption spectroscopy, we establish that the interfacial water governs neutral HER. The rigid interfacial water layer in neutral media would inhibit the transport of H2O*/OH* at the electrode/electrolyte interface of RuNC, but the RuSex can promote H2O*/OH* transport to increase the number of available H2O* on RuNC by disordering the interfacial water network. With the synergy of RuSex and RuNC, the resulting neutral HER performance in terms of mass-specific activity is 6.7 times higher than that of 20 wt.% Pt/C at overpotential of 100 mV.
UR - https://www.scopus.com/pages/publications/85140312746
U2 - 10.1038/s41467-022-33984-5
DO - 10.1038/s41467-022-33984-5
M3 - 文章
C2 - 36271080
AN - SCOPUS:85140312746
SN - 2041-1723
VL - 13
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 6260
ER -
