Facial synthesis of Fe-Ni bimetallic N-doped carbon framework for efficient electrochemical hydrogen evolution reaction

Hydrogen is one of the most desirable sources with large energy density. Electrocatalysis of hydrogen evolution reaction is a promising way to produce hydrogen since it can be powered by renewable energy such as solar and wind energy. However, the mainstream electrocatalyst is noble metal (Pt/Ru/Ir), which is expensive and rare. It is necessary to develop non-noble metal catalysts toward HER from the perspective of sustainable development and long-term environmental conservation. Therefore, this paper provides a cheap and feasible way to synthesize the Fe-Ni bimetallic N-doped carbon framework (Fe-Ni@NCF). The prepared Fe-Ni@NCF exhibits the desired overpotential of 219 mV at 10 mA cm(-2) in alkaline and 259 mV at 10 mA cm(-2) in acidic solution, respectively. Besides, it exhibits similar current density loss as commercial Pt/C after 10,000 segments of CVs, which suggests satisfactory durability. (C) 2020 Elsevier Ltd. All rights reserved.