Ordered Mesoporous Carbons with Graphitic Tubular Frameworks by Dual Templating for Efficient Electrocatalysis and Energy Storage

Ordered mesoporous carbons (OMCs) have attracted considerable interest owing to their broad utility. OMCs reported to date comprise amorphous rod‐like or tubular or graphitic rod‐like frameworks, which exhibit tradeoffs between conductivity and surface area. Here we report ordered mesoporous carbons...

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Published in:Angewandte Chemie International Edition 2021-01, Vol.60 (3), p.1441-1449
Main Authors: Baek, Du San, Lee, Kyung Ah, Park, Jaehyun, Kim, Jae Hyung, Lee, Jungsoo, Lim, June Sung, Lee, So Young, Shin, Tae Joo, Jeong, Hu Young, Son, Jae Sung, Kang, Seok Ju, Kim, Jin Young, Joo, Sang Hoon
Format: Article
Language:English
Subjects:
alkaline HER
Anion exchange
Anion exchanging
Catalysts
Catalytic activity
Electrical conductivity
Electrical resistivity
Electrolysis
Energy storage
graphene
Hydrogen evolution reactions
Li-ion capacitor
Molybdenum
Molybdenum carbide
Nanoparticles
ordered mesoporous carbon
Ruthenium
Silica
Silicon dioxide
Surface area
tubular frameworks
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Summary:Ordered mesoporous carbons (OMCs) have attracted considerable interest owing to their broad utility. OMCs reported to date comprise amorphous rod‐like or tubular or graphitic rod‐like frameworks, which exhibit tradeoffs between conductivity and surface area. Here we report ordered mesoporous carbons constructed with graphitic tubular frameworks (OMGCs) with tunable pore sizes and mesostructures via dual templating, using mesoporous silica and molybdenum carbide as exo‐ and endo‐templates, respectively. OMGCs simultaneously realize high electrical conductivity and large surface area and pore volume. Benefitting from these features, Ru nanoparticles (NPs) supported on OMGC exhibit superior catalytic activity for alkaline hydrogen evolution reaction and single‐cell performance for anion exchange membrane water electrolysis compared to Ru NPs on other OMCs and commercial catalysts. Further, the OMGC‐based full‐carbon symmetric cell demonstrates excellent performances for Li‐ion capacitors. Ordered mesoporous carbons constructed with graphitic tubular frameworks (OMGCs) were synthesized by a dual templating route. The OMGCs simultaneously realize high electrical conductivity and large surface area, which enable high performance in alkaline hydrogen evolution reaction, anion exchange membrane water electrolysis single‐cell, and Li‐ion capacitor.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202012936