文献类型：期刊文献

英文题名：Joule Heating-Driven sp²-C Domains Modulation in Biomass Carbon for High-Performance Bifunctional Oxygen Electrocatalysis

作者：He, Jiawei[1] Zhao, Yuying[3,4] Li, Yang[5] Yuan, Qixin[1] Wu, Yuhan[1] Wang, Kui[3,4] Sun, Kang[3,4] Wu, Jingjie[5] Jiang, Jianchun[3,4] Zhang, Baohua[6] Wang, Liang[2] Fan, Mengmeng[1,3,4]

第一作者：He, Jiawei

通信作者：Fan, MM[1];Wang, L[2];Fan, MM[3];Fan, MM[4]

机构：[1]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China;[2]Shanghai Univ, Inst Nanochem & Nanobiol, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[4]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210042, Peoples R China;[5]Univ Cincinnati, Dept Chem & Environm Engn, Cincinnati, OH 45221 USA;[6]Shanghai Univ, Sch Environm & Chem Engn, Dept Chem Engn, Shanghai 200444, Peoples R China

年份：2025

卷号：17

期号：1

外文期刊名：NANO-MICRO LETTERS

收录：;EI(收录号：20251718293207);Scopus(收录号：2-s2.0-105003102496);WOS:【SCI-EXPANDED(收录号:WOS:001469251600001)】；

基金：This work was supported by National Natural Science Foundation of China (No. 32371810), China Postdoctoral Science Foundation (2023M731702), National Key Research and Development Program of China (2023YFB4203702), the Foundation Research Project of Jiangsu Province (BK20221338), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, merit-based funding for Nanjing innovation and technology projects, and the Foundation of Jiangsu Key Lab of Biomass Energy and Material (JSBEM-S-202101).

语种：英文

外文关键词：Natural biomass; Carbon-based catalyst; sp(2)-C domains; Joule heating; Oxygen electrocatalysis

摘要：Natural biomass-derived carbon material is one promising alternative to traditional graphene-based catalyst for oxygen electrocatalysis. However, their electrocatalytic performance were constrained by the limited modulating strategy. Herein, using N-doped commercial coconut shell-derived activated carbon (AC) as catalyst model, the controllably enhanced sp2-C domains, through an flash Joule heating process, effectively improve the edge defect density and overall graphitization degree of AC catalyst, which tunes the electronic structure of N configurations and accelerates electron transfer, leading to excellent oxygen reduction reaction performance (half-wave potential of 0.884 VRHE, equivalent to commercial 20% Pt/C, with a higher kinetic current density of 5.88 mA cm-2) and oxygen evolution reaction activity (overpotential of 295 mV at 10 mA cm2). In a Zn-air battery, the catalyst shows outstanding cycle stability (over 1200 h) and a peak power density of 121 mW cm-2, surpassing commercial Pt/C and RuO2 catalysts. Density functional theory simulation reveals that the enhanced catalytic activity arises from the axial regulation of local sp2-C domains. This work establishes a robust strategy for sp2-C domain modulation, offering broad applicability in natural biomass-based carbon catalysts for electrocatalysis.