One-step synthesis of Co3O4 nanoparticles/laser induced graphene composites in ambient condition for electrocatalytic OER reaction
Jiangli Li,
Xue Yu,
Rongke Sun,
Hao Li,
Xiaodong Zhu,
Yanqing Ma,
Lei Ma
Affiliations
Jiangli Li
Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, PR China
Xue Yu
Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, PR China
Rongke Sun
Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, PR China
Hao Li
Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, PR China
Xiaodong Zhu
Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, PR China
Yanqing Ma
Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, PR China; School of Precision Instrument and Opto-electronics Engineering, Tianjin University 300072, PR China; Corresponding author at: Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, PR China.
Lei Ma
Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, PR China; Corresponding author.
In this paper, we report a successful one-step synthesis of Co3O4 Nanoparticles/Laser induced graphene (NPs/LIG) composite by using 1064 nm laser with irradiating cobalt salts impregnated basswood slices in air. The prepared Co3O4 NPs/LIG composites show uniformly distributed nanoparticles on the high-quality 3D graphene. It can be directly used as working electrode for electrochemical reactions without the need for extra post-treatment and exhibits remarkable performance for electrocatalytic OER reaction with an overvoltage of 325 mV at current density of 10 mA·cm−2 and Tafel slope of 66.63 mV·dec−1. Due to its great capability of fabrication precision, simplicity and high speed, this technique indicates immense potential in large scale electrochemical micro-sensor manufacture.
