NixWO2.72 nanorods as an efficient electrocatalyst for oxygen evolution reaction

• Published in: Green energy & environment Vol. 2; no. 2; pp. 119 - 123
• Main Authors: Xi, Zheng, Mendoza-Garcia, Adriana, Zhu, Huiyuan, Chi, MiaoFang, Su, Dong, Erdosy, Daniel P., Li, Junrui, Sun, Shouheng
• Format: Journal Article
• Language: English
• Published: United States Elsevier B.V 01-04-2017; Elsevier - Institute of Process Engineering, Chinese Academy of Sciences; KeAi Communications Co., Ltd
• Subjects: 3d transition metal doping; Center for Functional Nanomaterials; Electrocatalysis; ENERGY PLANNING, POLICY, AND ECONOMY; Nanorods; Oxygen evolution reaction; Tungsten oxide; Tungsten oxide; Electrocatalysis; Oxygen evolution reaction; 3d transition metal doping; Nanorods
• ISSN: 2468-0257; 2468-0257
• DOI: 10.1016/j.gee.2017.01.001

NixWO2.72 nanorods (NRs) are synthesized by a one-pot reaction of Ni(acac)2 and WCl4. In the rod structure, Ni(II) intercalates in the defective perovskite-type WO2.72 and is stabilized. The NixWO2.72 NRs show the x-dependent electrocatalysis for the oxygen evolution reaction (OER) in 0.1 M KOH with Ni0.78WO2.72 being the most efficient, even outperforming the commercial Ir-catalyst. The synthesis is not limited to NixWO2.72 but can be extended to MxWO2.72 (M = Co, Fe) as well, providing a new class of oxide-based catalysts for efficient OER and other energy conversion reactions.
Ni(II) is inserted into the defective perovskite-type WO2.72 nanorods and is stabilized to show Ni(II) composition dependent electrocatalysis with Ni0.78WO2.72 2being the most efficient catalyst, even outperforming the commercial Ir-catalyst, for the oxygen evolution reaction in 0.1 M KOH. [Display omitted]