title: Rapid Synthesis of Cobalt Nitride Nanowires: Highly Efficient and Low-Cost Catalysts for Oxygen Evolution.
abstract: Electrochemical splitting of water to produce hydrogen and oxygen is an important process for many energy storage and conversion devices. Developing efficient, durable, low-cost, and earth-abundant electrocatalysts for the oxygen evolution reaction (OER) is of great urgency. To achieve the rapid synthesis of transition-metal nitride nanostructures and improve their electrocatalytic performance, a new strategy has been developed to convert cobalt oxide precursors into cobalt nitride nanowires through N2 radio frequency plasma treatment. This method requires significantly shorter reaction times (about 1 min) at room temperature compared to conventional high-temperature NH3 annealing which requires a few hours. The plasma treatment significantly enhances the OER activity, as evidenced by a low overpotential of 290 mV to reach a current density of 10 mA cm(-2) , a small Tafel slope, and long-term durability in an alkaline electrolyte.
authors.affiliation: School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Yongqi
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: National Institute of Education, Nanyang Technological University, Singapore, 637616, Singapore.
authors.forename: Bo
authors.initials: B
authors.lastname: Ouyang
authors.affiliation: School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Jing
authors.initials: J
authors.lastname: Xu
authors.affiliation: School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Guichong
authors.initials: G
authors.lastname: Jia
authors.affiliation: School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
authors.forename: Shi
authors.initials: S
authors.lastname: Chen
authors.affiliation: National Institute of Education, Nanyang Technological University, Singapore, 637616, Singapore.
authors.forename: Rajdeep Singh
authors.initials: RS
authors.lastname: Rawat
authors.affiliation: School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore. fanhj@ntu.edu.sg.
authors.forename: Hong Jin
authors.initials: HJ
authors.lastname: Fan
keywords: cobalt nitride; electrocatalysis; nanostructures; oxygen evolution; water splitting