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Mixed-oxide-containing composite-supported MoPt with ultralow Pt content for accelerating hydrogen evolution
Hau Quoc Pham1,2, Tai Thien Huynh3, Quyen Huynh3
1Future Materials & Devices Lab., Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, 700000, Vietnam.
Abstract:
The hybridization of MoPt with ultralow Pt content (2.81 wt%) on a rutile Ti0.9Ir0.1O2-C composite (MoPt/Ti0.9Ir0.1O2-C) is fabricated by a self-growth-assisted reduction route, serving as an efficient catalyst for the hydrogen evolution reaction (HER). Due to unique structural features, the MoPt/Ti0.9Ir0.1O2-C catalyst requires an extremely low overpotential of 21.35 mV at 10 mA cm-2 and an impressive HER mass activity of 849.36 mA mgMetal-1 at 300 mV overpotential. In addition, the as-made HER electrocatalyst shows superior catalytic stability and chemical after 10 h of testing.

