Journal
NANO LETTERS
Volume 15, Issue 9, Pages 6015-6021Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b02205
Keywords
Cobalt/cobalt oxide; crystalline/amorphous core/shell; three-dimensional nanosheets; hydrogen evolution reaction; electrocatalysis
Categories
Funding
- College of Arts and Sciences, University of Missouri-Kansas City
- University of Missouri Research Board (UMRB)
- University of Missouri Interdisciplinary Intercampus (IDIC) Program
- China Scholarship Council for overseas research
- National Natural Science Foundation of China [51302072]
- China Scholarship Council
Ask authors/readers for more resources
Earth-abundant, low-cost electrocatalysts with outstanding catalytic activity in the electrochemical hydrogen evolution reaction (HER) are critical in realizing the hydrogen economy to lift our future welfare and civilization. Here we report that excellent HER activity has been achieved with three-dimensional core/shell Co/Co3O4 nanosheets composed of a metallic cobalt core and an amorphous cobalt oxide shell. A benchmark HER current density of 10 mA cm(-2) has been achieved at an overpotential of similar to 90 mV in 1 M KOH. The excellent activity is enabled with the unique metal/oxide core/shell structure, which allows high electrical conductivity in the core and high catalytic activity on the shell. This finding may open a door to the design and fabrication of earth-abundant, low-cost metal oxide electrocatalysts with satisfactory hydrogen evolution reaction activities.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available