Cobalt Assisted Synthesis of IrCu Hollow Octahedral Nanocages as Highly Active Electrocatalysts toward Oxygen Evolution Reaction

详细信息    查看全文

• 作者：Taehyun Kwon ; Hyeyoun Hwang ; Young Jin Sa ; Jongsik Park ; Hionsuck Baik ; Sang Hoon Joo and Kwangyeol Lee
• 刊名：Advanced Functional Materials
• 出版年：2017
• 出版时间：February 17, 2017
• 年：2017
• 卷：27
• 期：7
• 全文大小：3213K
• ISSN：1616-3028

文摘

Development of oxygen evolution reaction (OER) catalysts with reduced precious metal content while enhancing catalytic performance has been of pivotal importance in cost-effective design of acid polymer electrolyte membrane water electrolyzers. Hollow multimetallic nanostructures with well-defined facets are ideally suited for saving the usage of expensive precious metals as well as boosting catalytic performances; however, Ir-based hollow nanocatalysts have rarely been reported. Here, a very simple synthetic scheme is reported for the preparation of hollow octahedral nanocages of Co-doped IrCu alloy with readily tunable morphology and size. The Co-doped IrCu octahedral nanocages show excellent electrocatalytic activity and long-term durability for OER in acidic media. Notably, their OER activity represents one of the best performances among Ir-based acidic OER catalysts.