期刊
ACS OMEGA
卷 3, 期 8, 页码 10092-10098出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.8b01394
关键词
-
资金
- National Natural Science Foundation of China [21673128]
- Key Research and Development Programs of Shandong Province [2017GGX40112]
The sluggish oxygen evolution reaction (OER) hinders the development of electrocatalytic water splitting for energy conversion and storage. Therefore, it is imperative to explore the cost-effective and highly efficient noble-metal-free electrocatalysts for OER. Herein, we are introducing such OER electrocatalyst based on Co, fabricated through an ionic-liquid-assisted one-step synthesis, where ionic liquid played a dual role as solvent cum structure-directing agent. Besides possessing large-accessible surface area and numerous active sites, the as-prepared stable CoO nanosheets exhibited excellent electrochemical activity through establishing an extensive contact with the electrolyte. Under alkaline conditions, the overpotential to achieve a current density of 10 mA cm(-2) is only 320 mV, and the Tafel slope is as small as 70 mV dec(-1). Thus, our work provides a new pathway for designing and engineering the highly efficient non-noble metal OER electrocatalysts by using ionic liquids.
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