A Honeycomb-Like Bulk Superstructure of Carbon Nanosheets for Electrocatalysis and Energy Storage.,Angewandte Chemie International Edition

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A Honeycomb-Like Bulk Superstructure of Carbon Nanosheets for Electrocatalysis and Energy Storage.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-04-24 , DOI: 10.1002/anie.202004737
Lianli Zou _{1,

2,

3} , Chun-Chao Hou ₃ , Qiuju Wang _{1,

2} , Yong-Sheng Wei ₃ , Zheng Liu ₄ , Jun-Sheng Qin ₅ , Huan Pang ₆ , Qiang Xu _{1,

2,

3,

6}

Affiliation

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.

中文翻译：

碳纳米片的蜂窝状块状上部结构，用于电催化和能量存储。

上层建筑因其在材料科学和生物学中的潜在应用而受到广泛关注。在这里，我们通过使用金属-有机骨架纳米粒子作为模板，并使用聚乙烯吡咯烷酮作为附加碳源，制造了碳纳米片（SCNS）的第一个厘米级的多孔上部结构。SCNS呈蜂窝状形态，带有共享壁的碳笼，在每个腔中均封装有多孔碳球。单片SCNS直接用作两电极对称超级电容器电池的电极，无需任何粘合剂和载体，这得益于其超大几何尺寸的优势，并且Fe固定化的SCNS对氧还原反应显示出出色的催化性能并安装在锌空气电池中。

更新日期：2020-04-24

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