Feng Tong, Liao Wenli, Li Zhongbin, Sun Lingtao, Shi Dongping, Guo Chaozhong, Huang Yu, Wang Yi, Cheng Jing, Li Yanrong, Diao Qizhi
Research Institute for New Materials Technology, School of Chemistry and Chemical Engineering, Engineering Research Center of New Energy Storage Devices and Applications, Chongqing University of Arts and Sciences, Chongqing, 402160, China.
Central Laboratory Yongchuan Hospital, Chongqing Medical University, Chongqing, 402160, China.
Nanoscale Res Lett. 2017 Nov 17;12(1):595. doi: 10.1186/s11671-017-2364-6.
Large-scale production of active and stable porous carbon catalysts for oxygen reduction reaction (ORR) from protein-rich biomass became a hot topic in fuel cell technology. Here, we report a facile strategy for synthesis of nitrogen-doped porous nanocarbons by means of a simple two-step pyrolysis process combined with the activation of zinc chloride and acid-treatment process, in which kidney bean via low-temperature carbonization was preferentially adopted as the only carbon-nitrogen sources. The results show that this carbon material exhibits excellent ORR electrocatalytic activity, and higher durability and methanol-tolerant property compared to the state-of-the-art Pt/C catalyst for the ORR, which can be mainly attributed to high graphitic-nitrogen content, high specific surface area, and porous characteristics. Our results can encourage the synthesis of high-performance carbon-based ORR electrocatalysts derived from widely-existed natural biomass.
从富含蛋白质的生物质中大规模生产用于氧还原反应（ORR）的活性和稳定的多孔碳催化剂成为燃料电池技术中的一个热门话题。在此，我们报告了一种简便的策略，通过简单的两步热解过程结合氯化锌活化和酸处理过程来合成氮掺杂多孔纳米碳，其中优先采用经过低温碳化的芸豆作为唯一的碳氮源。结果表明，与用于ORR的现有Pt/C催化剂相比，这种碳材料表现出优异的ORR电催化活性、更高的耐久性和甲醇耐受性，这主要归因于高石墨氮含量、高比表面积和多孔特性。我们的结果能够促进从广泛存在的天然生物质中合成高性能的碳基ORR电催化剂。
