TY - JOUR
T1 - Chlorine-anion doping induced multi-factor optimization in perovskties for boosting intrinsic oxygen evolution
AU - Zhu, Yinlong
AU - Lin, Qian
AU - Wang, Zhenbin
AU - Qi, Dongchen
AU - Yin, Yichun
AU - Liu, Yu
AU - Zhang, Xiwang
AU - Shao, Zongping
AU - Wang, Huanting
PY - 2021
Y1 - 2021
N2 - The oxygen evolution reaction (OER) plays a crucial role in many electrochemical energy technologies, and creating multiple beneficial factors for OER catalysis is desirable for achieving high catalytic efficiency. Here, we highlight a new halogen-chlorine (Cl)-anion doping strategy to boost the OER activity of perovskite oxides. As a proof-of-concept, proper Cl doping at the oxygen site of LaFeO3 (LFO) perovskite can induce multiple favorable characteristics for catalyzing the OER, including rich oxygen vacancies, increased electrical conductivity and enhanced Fe-O covalency. Benefiting from these factors, the LaFeO2.9-δCl0.1 (LFOCl) perovskite displays significant intrinsic activity enhancement by a factor of around three relative to its parent LFO. This work uncovers the effect of Cl-anion doping in perovskites on promoting OER performance and paves a new way to design highly efficient electrocatalysts.
AB - The oxygen evolution reaction (OER) plays a crucial role in many electrochemical energy technologies, and creating multiple beneficial factors for OER catalysis is desirable for achieving high catalytic efficiency. Here, we highlight a new halogen-chlorine (Cl)-anion doping strategy to boost the OER activity of perovskite oxides. As a proof-of-concept, proper Cl doping at the oxygen site of LaFeO3 (LFO) perovskite can induce multiple favorable characteristics for catalyzing the OER, including rich oxygen vacancies, increased electrical conductivity and enhanced Fe-O covalency. Benefiting from these factors, the LaFeO2.9-δCl0.1 (LFOCl) perovskite displays significant intrinsic activity enhancement by a factor of around three relative to its parent LFO. This work uncovers the effect of Cl-anion doping in perovskites on promoting OER performance and paves a new way to design highly efficient electrocatalysts.
KW - Anion doping
KW - Halogen chlorine
KW - Multiple beneficial factors
KW - Oxygen evolution reaction
KW - Perovskite oxide
U2 - 10.1016/j.jechem.2020.03.055
DO - 10.1016/j.jechem.2020.03.055
M3 - Journal article
SN - 2095-4956
VL - 52
SP - 115
EP - 120
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
ER -