Assemblage of Perovskite LaNiO3 Connected With In Situ Grown Nitrogen-Doped Carbon Nanotubes as High-Performance Electrocatalyst for Oxygen Evolution Reaction

作者：Chen, Jiaye; Wu, Jian; Liu, Yongqiang; Hu, Xun^*; Geng, Dongsheng^*

来源：Physica Status Solidi A-Applications and Materials Science, 2018, 215(21): 1800380.

DOI：10.1002/pssa.201800380

• nitrogen doped carbon nanotubes
• oxygen evolution reaction
• perovskite LaNiO3
• polyol method

In this study, the synthesis of nano-sized phase-pure perovskite LaNiO3 with in-situ grown nitrogen doped carbon nanotubes (NCNTs) is reported. The heterogenous material acts as highly active and durable electrocatalyst toward oxygen evolution reaction (OER) in alkaline solution. The LaNiO3 nanoparticles prepared by the conventional method require an overpotential of 490 mV, while the one synthesized by the proposed polyol method in this work requires only 410 mV, and the value can be further decreased to merely 390 mV for the as-prepared LaNiO3-NCNTs at a current density of 10 mA cm(-2). The high performance of this composite material could be due to the exposure of more active sites existing on the surface of LaNiO3 nanoparticles and the connected NCNTs, which improve the charge transfer from the active LaNiO3 surface to the electrode substrate and therefore outperforms the electrocatalytic activity in comparison to commercial RuO2 catalyst. The synthesis method reported here opens a new way to design advanced perovskite oxides for OER even other applications.

• 出版日期2018-11-7
• 单位济南大学; 北京科技大学