TY - JOUR
T1 - In-situ evolution of active layers on commercial stainless steel for stable water splitting
AU - Lyu, Yanhong
AU - Wang, Ruilun
AU - Tao, Li
AU - Zou, Yuqin
AU - Zhou, Huaijuan
AU - Liu, Tingting
AU - Zhou, Yangyang
AU - Huo, Jia
AU - Jiang, San Ping
AU - Zheng, Jianyun
AU - Wang, Shuangyin
N1 - Publisher Copyright:
© 2019
PY - 2019/7/5
Y1 - 2019/7/5
N2 - Efforts to explore earth-abundant, non-precious electrocatalyst, especially commercial stainless steel, to replace precious-metal-based catalyst have attracted increasing interest in renewable energy research. Herein, we design a facile and simple route to fabricate highly efficient 316L-type stainless steel-based electrocatalysts for water splitting by CH4 plasma. After CH4 plasma treatment, the amorphous carbon layer and the graphene encapsulated Fe3C nanoparticles are observed on the surface of stainless steel, which play the roles of active sites and protective layer for simultaneously providing an acceptable hydrogen evolution reaction (HER) and excellent oxygen evolution reaction (OER). The optimized stainless steel-based electrocatalyst exhibits an overpotential of only 290 mV at 10 mA cm−2 and possesses outstanding kinetics (the Tafel slope of 38 mV dec-1) for OER in the 1.0 M KOH aqueous solution. We anticipate that the operating strategy of our system may aid the development of commercial non-precious productions as the efficient electrocatalysts for energy storage and conversion.
AB - Efforts to explore earth-abundant, non-precious electrocatalyst, especially commercial stainless steel, to replace precious-metal-based catalyst have attracted increasing interest in renewable energy research. Herein, we design a facile and simple route to fabricate highly efficient 316L-type stainless steel-based electrocatalysts for water splitting by CH4 plasma. After CH4 plasma treatment, the amorphous carbon layer and the graphene encapsulated Fe3C nanoparticles are observed on the surface of stainless steel, which play the roles of active sites and protective layer for simultaneously providing an acceptable hydrogen evolution reaction (HER) and excellent oxygen evolution reaction (OER). The optimized stainless steel-based electrocatalyst exhibits an overpotential of only 290 mV at 10 mA cm−2 and possesses outstanding kinetics (the Tafel slope of 38 mV dec-1) for OER in the 1.0 M KOH aqueous solution. We anticipate that the operating strategy of our system may aid the development of commercial non-precious productions as the efficient electrocatalysts for energy storage and conversion.
KW - 316L-type stainless steels
KW - Efficient water splitting
KW - Graphene encapsulated FeC nanoparticles
KW - Plasma treatment
UR - http://www.scopus.com/inward/record.url?scp=85061624340&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2019.02.032
DO - 10.1016/j.apcatb.2019.02.032
M3 - Article
AN - SCOPUS:85061624340
SN - 0926-3373
VL - 248
SP - 277
EP - 285
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
ER -
