Nickel in nitrogen-doped graphene nanotube as efficient electrocatalyst for water splitting

Bidushi Sarkar, Karuna Kar Nanda
2020 DAE SOLID STATE PHYSICS SYMPOSIUM 2019  
Designing an efficient bifunctional electrocatalyst for kinetically sluggish hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is a necessity for energy efficient water splitting. In this regard, we report facile synthesis of a phase pure face centered cubic (FCC) nickel electrocatalyst in nitrogen doped graphene nanotube (NGT) of diameter ~ 100 nm. The single step in-situ synthesis of Ni-NGT synthesized by pyrolysis is cost effective and the bifunctional catalytic activity
more » ... catalytic activity that can compete with the state-of-the-art Pt-C and RuO 2 catalyst for HER and OER, respectively. The enhanced catalytic activity can be attributed to the synergistic effect of Ni active centers, defect sites due to N-doping and the conducting NGT support.
doi:10.1063/5.0017533 fatcat:zwltyweq5jgtbjg3rq6h2uvk2m