TY - JOUR
T1 - Alveoli-inspired facile transport structure of N-doped porous carbon for electrochemical energy applications
AU - Chung, Dong Young
AU - Lee, Kyung Jae
AU - Yu, Seung Ho
AU - Kim, Minhyoung
AU - Lee, Stanfield Youngwon
AU - Kim, Ok Hee
AU - Park, Hyun Jin
AU - Sung, Yung Eun
N1 - Publisher Copyright:
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - Heteroatom-doped porous carbon materials have attracted much attention because of their extensive application in energy conversion and storage devices. Because the performance of fuel cells and the rate capability of supercapacitors depend significantly on multiple factors, such as electrical conductivity and transport rate of ions and reactants, designing these carbon-based materials to optimize performance factors is vital. In order to address these issues, alveoli that possess a hollow cavity where oxygen exchange can occur are synthesized, inspired by N-doped carbon materials with a high surface area and low transport resistance. By incorporating a dopamine coating on zeolitic imidazolate framework (ZIF), pore size is modified and electrical conducting pathways are constructed, resulting in changes to the reaction kinetics. These highly interconnected electron connection channels and proper pore sizes facilitate the diffusion of reactants and the conduction of electrons, leading to high activity of the oxygen reduction reaction (ORR), which is comparable to Pt, and high rate performance in supercapacitors. Alveoli-inspired N-doped carbon materials with a high surface area and low transport resistance are synthesized. By incorporating a dopamine coating on a zeolitic imidazolate framework, pore size is modified and electrical conducting pathways are constructed, resulting in changes to the reaction kinetics. This is important for electrochemical energy applications.
AB - Heteroatom-doped porous carbon materials have attracted much attention because of their extensive application in energy conversion and storage devices. Because the performance of fuel cells and the rate capability of supercapacitors depend significantly on multiple factors, such as electrical conductivity and transport rate of ions and reactants, designing these carbon-based materials to optimize performance factors is vital. In order to address these issues, alveoli that possess a hollow cavity where oxygen exchange can occur are synthesized, inspired by N-doped carbon materials with a high surface area and low transport resistance. By incorporating a dopamine coating on zeolitic imidazolate framework (ZIF), pore size is modified and electrical conducting pathways are constructed, resulting in changes to the reaction kinetics. These highly interconnected electron connection channels and proper pore sizes facilitate the diffusion of reactants and the conduction of electrons, leading to high activity of the oxygen reduction reaction (ORR), which is comparable to Pt, and high rate performance in supercapacitors. Alveoli-inspired N-doped carbon materials with a high surface area and low transport resistance are synthesized. By incorporating a dopamine coating on a zeolitic imidazolate framework, pore size is modified and electrical conducting pathways are constructed, resulting in changes to the reaction kinetics. This is important for electrochemical energy applications.
KW - electrocatalysts
KW - nitrogen-doped carbon
KW - oxygen reduction reaction
KW - supercapacitors
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U2 - 10.1002/aenm.201401309
DO - 10.1002/aenm.201401309
M3 - Article
AN - SCOPUS:84922369272
SN - 1614-6832
VL - 5
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 3
M1 - 1401309
ER -