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Lignin derived multi-doped(N, S, Cl) carbon materials as excellent electrocatalyst for oxygen reduction reaction in proton exchange membrane fuel cells

查看全文 作　　者：Yixing [1,2]Shen;Yuhang [1]Li;Guangxing [2]Yang;Qiao [1]Zhang;Hong [1]Liang;Feng [1]Peng 高影响力作者 机构地区：[1]School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,Guangdong,China;[2]School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China高影响力机构 出　　处：《Journal of Energy Chemistry》索引2020年第29卷第5期,共9页高影响力期刊 基　　金：the financial support from the National Natural Science Foundation of China(No.21373091);the Science and Technology Project of Guangzhou City(No.201704030040). 摘　　要：Nowadays,hierarchically macro-/meso-/microporous 3D carbon materials have been paid more attention due to their imaginative application potential in specific electrochemistry.Here,we report a dualtemplate strategy using eutectic NaCl/ZnCl2 melt as airtight and swelling agent to obtain 3D mesoporous skeleton structured carbon from renewable lignin.The prepared lignin-derived biocarbon material(LN-3-1)has a high specific surface area(1289 m^2 g^-1),a large pore volume(2.80 cm^3 g^-1),and a well-connected and stable structure.LN-3-1 exhibits extremely high activity and stability in acidic medium for oxygen reduction reaction(ORR),superior to Pt/C catalyst and most non noble-metal catalysts reported in recent literatures.The prepared carbon material was used as a cathode catalyst to assemble a H2-O2 single fuel cell,and its excellent catalytic performance has been confirmed with the maximum power density of 779 mW cm^-2,which is one of the highest power densities among non-metallic catalysts so far.Density functional theory(DFT)calculations indicate that the synergy of chlorine and nitrogen reconciles the intermediate adsorption energies,leading to an appropriate theoretical ORR onset potential.We develop a cost-effective and highly efficient method to prepare biocarbon catalyst for ORR in proton-exchange membrane fuel cells. 关 键 词：ELECTROCATALYST Biocarbon Fuel cells Lignin-derived carbon Oxygen reduction reaction CHLORINE doping
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