ZnO-promoted dechlorination for hierarchically nanoporous carbon as superior oxygen reduction electrocatalyst. (August 2016)

• Record Type: Journal Article
• Authors: Zhang, Guoxin; Luo, Huaxing; Li, Haoyuan; Wang, Lin; Han, Biao; Zhang, Haichuan; Li, Yingjie; Chang, Zheng; Kuang, Yun; Sun, Xiaoming
• Is Part Of: Nano energy. Volume 26(2016:Aug.)
• Page Start: 241
• Page End: 247
• Publication Date: 2016-08
• Subjects: Dechlorination -- Doped carbon -- Pore management -- Ion diffusion -- Oxygen reduction reaction; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2016.05.029
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: The dechlorination of unconventional carbon source: polyvinyl dichloride (PVDC) by ZnO at the presence of melamine was used to prepare hierarchically Porous N-doped nanoCarbon (PDC). ZnO played the multirole of dechlorination agent, mesopore templates, and most importantly, ZnCl2 generation source. ZnCl2, at latter high temperature treatment, could promote carbonization and lead to hierarchical micro- and mesopore formation, which facilitated mass transportation for electrocatalytic oxygen reduction reaction (ORR). The 900 °C-annealed PDC exhibited ultrahigh activity which comprehensively surpassed the commercially available 20 wt% Pt/C. Graphical abstract: Highlights: New synthetic reactions between PVDC and ZnO were applied for carbon fabrication. Byproducts H2 O and ZnCl2 greatly facilitated pore management, creating smooth channels for mass. Resulted hierarchical porous N-doped carbon exhibit excellent performance for oxygen redution.