Covalent organic frameworks derived hollow structured N-doped noble carbon for asymmetric-electrolyte Zn-air battery

被引：0

作者：

Pingwei Cai ^{[1
,2
]}

Xinxin Peng ^{[1
,2
]}

Junheng Huang ^{[1
]}

Jingchun Jia ^{[1
]}

Xiang Hu ^{[1
]}

Zhenhai Wen ^{[1
]}

机构：

[1] CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences

[2] University of Chinese Academy of Science

来源：

Science China(Chemistry) | 2019年 / 03期

关键词：

noble carbon; oxygen reduction reaction; asymmetric-electrolyte Zn-air battery; energy density;

D O I：

暂无

中图分类号：

O643.36 [催化剂]; TM911.41 [金属-空气电池];

学科分类号：

081705 ; 0808 ;

摘要：

We report a relatively low-temperature molten salt strategy to prepare hollow structured N-doped noble carbon（h-NNC） with highly desirable features of ultra-large surface area(1957 m2 g-1) and high graphitization, endowing the h-NNC with high activity toward catalysis of oxygen reduction reaction in acidic medium. The h-NNC is applied as cathode catalyst of an asymmetrical-electrolyte Zn-air battery, which exhibits an open circuit voltage of 2.11 V, a power density up to 270 mW cm-2,and an energy density of 1279 W h kg-1, behaving advantages over the conventional Zn-air batteries.

引用

页码：385 / 392

页数：8