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A Honeycomb‐Like Bulk Superstructure of Carbon Nanosheets for Electrocatalysis and Energy Storage
Author(s) -
Zou Lianli,
Hou ChunChao,
Wang Qiuju,
Wei YongSheng,
Liu Zheng,
Qin JunSheng,
Pang Huan,
Xu Qiang
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202004737
Subject(s) - materials science , electrocatalyst , supercapacitor , nanotechnology , carbon fibers , polyvinylpyrrolidone , energy storage , superstructure , fabrication , electrode , honeycomb , nanoparticle , chemical engineering , porosity , nanostructure , composite number , composite material , chemistry , capacitance , electrochemistry , alternative medicine , oceanography , pathology , engineering , power (physics) , quantum mechanics , medicine , physics , geology , polymer chemistry
Superstructures have attracted extensive attention because of their potential applications in materials science and biology. Herein, we fabricate the first centimeter‐sized porous superstructure of carbon nanosheets (SCNS) by using metal–organic framework nanoparticles as a template and polyvinylpyrrolidone as an additional carbon source. The SCNS shows a honeycomb‐like morphology with wall‐sharing carbon cages, in each cavity of which a porous carbon sphere is encapsulated. A single piece of SCNS is directly used as the electrode for a two‐electrode symmetrical supercapacitor cell without any binders and supports, benefiting from its advantage in ultra‐large geometric size, and the Fe‐immobilized SCNS exhibits excellent catalytic performances for oxygen reduction reaction and in a Zn–air battery. This synthetic strategy presents a facile approach for preparing functional SCNS at centimetric scale with controllable morphologies and compositions favoring the fabrication of energy devices.