A Straightforward Polymerization-Pyrolysis Strategy to Prepare N,P,S Triply Doped Carbon Nanosheets as Efficient Electrocatalyst for Oxygen Reduction Reaction

Non-metallic carbonaceous catalysts for oxygen reduction reaction (ORR) hold great promise for applications in zinc-air batteries (ZABs). Their performance is substantially dictated by the type and quantity of heteroatoms doped within the carbon lattice. Herein, a novel polymerization-pyrolysis strategy is proposed to prepare N, P, S triply doped carbon nanosheets (NPS-C) and regulate the amount of doped atoms. The optimized sample showcases excellent ORR catalytic performance, featuring a half-wave potential of 0.81 V vs. RHE and high long-term stability. When employed as the cathode catalyst in ZABs, the resulting battery delivers a high peak power density of 157.9 mW cm-2, along with high specific capacity and good rate capability. This work provides a simple and effective strategy for developing non-precious carbon-based electrocatalysts, offering new possibilities for enhancing the performance of energy storage and conversion devices.

Keywords: NPS-C, heteroatom doping, ultrathin nanosheets, oxygen reduction reaction, zinc-air batteries

Suggested Citation: Suggested Citation

Shen, Kuan and Chen, Yuqi and Li, Ming and Guo, Xingmei and Fan, Siying and Zhao, Yafei and Xu, Zhao and Wang, Yuanyuan and Kong, Qinghong and Zhang, Junhao, A Straightforward Polymerization-Pyrolysis Strategy to Prepare N,P,S Triply Doped Carbon Nanosheets as Efficient Electrocatalyst for Oxygen Reduction Reaction. Available at SSRN: https://ssrn.com/abstract=5224820 or http://dx.doi.org/10.2139/ssrn.5224820