TY - JOUR
T1 - Rational Construction of a WS2/CoS2 Heterostructure Electrocatalyst for Efficient Hydrogen Evolution at All pH Values
AU - Wu, Jun
AU - Chen, Tian
AU - Zhu, Chenyu
AU - Du, Junjie
AU - Huang, Longsheng
AU - Yan, Jing
AU - Cai, Dongming
AU - Guan, Cao
AU - Pan, Chunxu
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/3/23
Y1 - 2020/3/23
N2 - The exploitation of economic, highly active, and perdurable electrocatalysts for the hydrogen evolution reaction (HER) over the entire pH range is required for production of hydrogen energy. Hence, we demonstrate unique self-supported heterogeneous WS2/CoS2 nanosheet arrays on carbon cloth substrates (WS2/CoS2/CC) derived from cobalt-based metal-organic frameworks as efficient pH-universal electrocatalysts using a facile fabrication process. Owing to the special heterostructure that can accelerate the charge transfer, the WS2/CoS2/CC exhibits impressive HER activities with long-term durability in pH-universal electrolytes. In 0.5 M H2SO4, 1.0 M phosphate buffer solution, and 1.0 M KOH, it only requires overpotentials of 146, 175, and 122 mV, respectively, to achieve a current density of 10 mA cm-2. The rational construction of such a heterostructure provides a promising way to obtain pH-universal electrocatalysts for energy storage and conversion.
AB - The exploitation of economic, highly active, and perdurable electrocatalysts for the hydrogen evolution reaction (HER) over the entire pH range is required for production of hydrogen energy. Hence, we demonstrate unique self-supported heterogeneous WS2/CoS2 nanosheet arrays on carbon cloth substrates (WS2/CoS2/CC) derived from cobalt-based metal-organic frameworks as efficient pH-universal electrocatalysts using a facile fabrication process. Owing to the special heterostructure that can accelerate the charge transfer, the WS2/CoS2/CC exhibits impressive HER activities with long-term durability in pH-universal electrolytes. In 0.5 M H2SO4, 1.0 M phosphate buffer solution, and 1.0 M KOH, it only requires overpotentials of 146, 175, and 122 mV, respectively, to achieve a current density of 10 mA cm-2. The rational construction of such a heterostructure provides a promising way to obtain pH-universal electrocatalysts for energy storage and conversion.
KW - HER
KW - interface engineering
KW - metal-organic frameworks
KW - pH-universal
KW - transition-metal-based sulfides
UR - http://www.scopus.com/inward/record.url?scp=85082704126&partnerID=8YFLogxK
U2 - 10.1021/acssuschemeng.9b07507
DO - 10.1021/acssuschemeng.9b07507
M3 - 文章
AN - SCOPUS:85082704126
SN - 2168-0485
VL - 8
SP - 4474
EP - 4480
JO - ACS Sustainable Chemistry and Engineering
JF - ACS Sustainable Chemistry and Engineering
IS - 11
ER -