Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 45, Issue 4, Pages 2765-2773Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.11.170
Keywords
Flower-like structure; CoS1.097-B nanosheets; Oxygen evolution reaction
Categories
Funding
- National Natural Science Foundation of China [51872075, 51922008]
- 111 Project [D17007]
- Foundation and Advanced Technology Research Program of Henan Province [152300410084]
- Henan Center for Outstanding Overseas Scientists [GZS2018003]
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At present, the preparation of highly active, long-term durable, and low cost electro-catalysts toward oxygen evolution reaction is still a challenge for energy conversion and storage. This work reports CoS1.097 embedded in flower-like biomass derived from red blood cells (RBCs) nanocatalyst, was synthesized via a one-step, hydrothermal method. Compared to pure CoS1.097 microspheres, the generated flower-like CoS1.097-biomass (CoS1.097-B) nanosheets exhibits enhanced OER electrocatalytic activity with a onset potential of 1.43 V (vs. RHE), an overpotential of 260 mV at the current density of 10 mA cm(-2), and a low Tafel slope of 83 mV dec(-1). Moreover, the CoS1.097-B displays good OER stability with little decrease after 400 cycles. Our work provides a reference for designing catalysts with high activity and good stability using biomass under mild conditions. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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