Impact of Different Lignin Sources on Nitrogen−Doped Porous Carbon toward the Electrocatalytic Oxygen Reduction Reaction

Zheng Li, Yuwei Feng, Xia Qu, Yantao Yang, Lili Dong, Tingzhou Lei and Suxia Ren ()
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Zheng Li: Institute of Urban & Rural Mining, Changzhou University, Changzhou 213164, China
Yuwei Feng: Institute of Urban & Rural Mining, Changzhou University, Changzhou 213164, China
Xia Qu: Institute of Urban & Rural Mining, Changzhou University, Changzhou 213164, China
Yantao Yang: Institute of Urban & Rural Mining, Changzhou University, Changzhou 213164, China
Lili Dong: Institute of Urban & Rural Mining, Changzhou University, Changzhou 213164, China
Tingzhou Lei: Institute of Urban & Rural Mining, Changzhou University, Changzhou 213164, China
Suxia Ren: Institute of Urban & Rural Mining, Changzhou University, Changzhou 213164, China

IJERPH, 2023, vol. 20, issue 5, 1-11

Abstract: Lignin is an ideal carbon source material, and lignin−based carbon materials have been widely used in electrochemical energy storage, catalysis, and other fields. To investigate the effects of different lignin sources on the performance of electrocatalytic oxygen reduction, different lignin−based nitrogen−doped porous carbon catalysts were prepared using enzymolytic lignin (EL), alkaline lignin (AL) and dealkaline lignin (DL) as carbon sources and melamine as a nitrogen source. The surface functional groups and thermal degradation properties of the three lignin samples were characterized, and the specific surface area, pore distribution, crystal structure, defect degree, N content, and configuration of the prepared carbon−based catalysts were also analyzed. The electrocatalytic results showed that the electrocatalytic oxygen reduction performance of the three lignin−based carbon catalysts was different, and the catalytic performance of N−DLC was poor, while the electrocatalytic performance of N−ELC was similar to that of N−ALC, both of which were excellent. The half−wave potential (E 1/2 ) of N−ELC was 0.82 V, reaching more than 95% of the catalytic performance of commercial Pt/C (E 1/2 = 0.86 V) and proving that EL can be used as an excellent carbon−based electrocatalyst material, similar to AL.

Keywords: lignin; carbon material; nitrogen doping; oxygen reduction reaction (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2023
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