文献类型：期刊文献

英文题名：Acid-base component reconstruction coupled self-template enabling N, P-codoped porous biochar as metal-free bifunctional oxygen electrocatalyst for Zn-air battery

作者：Li, Wensheng[1];Chen, Wensheng[1];Li, Bairong[1];Zhao, Hui[1];Wang, Yi[1];Qu, Bingliang[1];Jing, Zhanxing[1];Chen, Beibei[2];Xiao, Xiao[1,3];Zhao, Jianwei[4]

机构：[1]Guangdong Ocean Univ, Sch Chem & Environm, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Peoples R China;[3]Zhanjiang Key Lab Coastal Zone Seawater Farming Pollutant Control & Ecol Restorat, Zhanjiang 524088, Peoples R China;[4]Shenzhen HUASUAN Technol Co Ltd, Shenzhen 518000, Peoples R China

年份：2026

卷号：161

外文期刊名：JOURNAL OF ENERGY STORAGE

收录：SCI-EXPANDED(收录号：WOS:001740572200001)、、EI(收录号：20261420434170)、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (52404315) , the Guangdong Basic and Applied Basic Research Foundation (2023A1515110446, 2024A1515011145) , the Special Fund for Science and Technology Innovation Strategy of Guangdong Province (2023A01019) , the Program for Scientific Research Start-Upfunds of Guangdong Ocean University (060302122010) and Provincial College Student Innovation and Entrepreneurship Project (S202510566004) .

语种：英文

外文关键词：Acid-base component reconstruction; N,P-codoped porous biochar; Zn-air battery; Bifunctional oxygen electrocatalyst; Self-template

外文摘要：Heteroatom-doped porous biochar displays significant potential in improving oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) for rechargeable Zn-air battery (RZAB). Here, an acid-base component reconstruction coupled self-template strategy is presented to prepare fish-scale derived N, P-codoped porous biochar (NPPC), serving as an efficient metal-free bifunctional oxygen electrocatalyst. The resulting NPPC exhibits distinct functional features, including N, P-codoped character to construct rich catalytic active sites, continuous macro-meso-microporous structure to accelerate charge/mass transfer and enlarge the oxygen electrocatalytic reaction area, and hybrid graphitic-amorphous carbon structure to improve stability and conductivity. Profiting from the collaborative effect of above-stated functional features, the optimized NPPC-600 achieves a high E1/2 of 0.825 V vs. RHE for ORR and a low Ej=10 of 1.525 V for OER. Meanwhile, the NPPC600 based RZAB presents a high peak power density of 225.4 mV cm-2 and a prominent cyclic stability with a slight voltage gap increasing of 0.04 V for 735 h (1100 cycle) at 10 mA cm-2. This study proposes an innovative and simple design concept to precisely construct high performance metal-free bifunctional oxygen electrocatalyst and realize the high-value utilization of fish by-products.