Journal
NANO ENERGY
Volume 65, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2019.104051
Keywords
Zinc-air batteries; Bifunctional catalyst; Carbon pore confinement; Carbon defects; Durability
Categories
Funding
- University of Waterloo
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Waterloo Institute for Nanotechnology
- U.S. Department of Energy, Office of Basic Energy Science [DE-SC0012704]
- U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office
- DOE Office of Science [DE-AC02-06CH11357]
Ask authors/readers for more resources
Exceptional and durable catalysts for Zinc-air batteries are plagued by nanoparticle agglomeration. As a proof-of-concept, we designed carbon-pore-sheathed cobalt nanoseeds by loading cobalt nanoparticles into N-doped defective carbon pores. Introduced N-doping, Co-N-C bond and graphitic/graphenic carbon defects endow the catalyst with exceptional catalytic activity. Most importantly, the design of Co confined within carbon pores effectively solved the dilemma of nanomaterial stability. By balancing the high catalytic activity and stable cyclability, this unique catalyst is among the outstanding bifunctional catalysts, with a high ORR half-wave potential of 0.847 V and a low OER potential at 10 mA/cm(2) of 1.593 V. As demonstrated in the full cell, a peak power density of 135 mW/cm(2) at a current density of 200 mA/cm(2) and 450 h of stable cycling performance without fading at a current density of 30 mA/cm(2) was delivered.
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