Free-standing vertically-aligned nitrogen-doped carbon nanotube arrays/graphene as air-breathing electrodes for rechargeable zinc-air batteries

被引：80

作者：

Cai, Xiaoyi ^{[1
]}

Xia, Bao Yu ^{[3
,4
]}

Franklin, Joseph ^{[1
]}

Li, Baosheng ^{[2
]}

Wang, Xin ^{[5
]}

Wang, Zhan ^{[6
]}

Chen, Luwei ^{[6
]}

Lin, Jianyi ^{[1
]}

Lai, Linfei ^{[1
,2
]}

Shen, Zexiang ^{[1
]}

机构：

[1] Nanyang Technol Univ, Energy Res Inst NTU ERIAN, 1,CleanTech Loop, 06-04,CleanTech 1, Singapore 637141, Singapore

[2] Nanjing Tech Univ Nanjing Tech, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, Inst Adv Mat IAM, Key Lab Flexible Elect KLOFE, 30 South Puzhu Rd, Nanjing 211816, Peoples R China

[3] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan 430074, Peoples R China

[4] Shenzhen Inst Huazhong, Univ Sci Technol, Shenzhen 518000, Peoples R China

[5] Nanyang Technol Univ, Sch Chem & Biomed Engn, 62 Nanyang Dr, Singapore 637459, Singapore

[6] ASTAR, Inst Chem & Engn Sci, 1 Pesek Rd, Singapore 627833, Singapore

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2017年 / 5卷 / 06期

基金：

中国国家自然科学基金;

关键词：

OXYGEN REDUCTION REACTION; EFFICIENT ELECTROCATALYST; GRAPHENE OXIDE; FUEL-CELLS; CATALYSTS; ULTRATHIN; CATHODE; PAPER; FOAM;

D O I：

10.1039/c6ta09615h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Developing highly efficient air-breathing electrodes is of significant importance for various energy conversion technologies. In this work, we report the synthesis of free-standing, nitrogen (N)-doped vertically aligned carbon nanotubes (N-VA-CNTs) supported by graphene foam (GF), demonstrating excellent catalytic activity for oxygen electrochemical reactions. The presence and status of N is systematically analyzed; N-doped carbon flake fragments present on the walls of the CNTs are proposed to be responsible for the high electrocatalytic activity. A rechargeable Zn-air battery assembled from this N-VACNTs/GF hybrid electrode exhibits much higher power density than those of commercial Pt/C electrocatalysts. Zn-air batteries assembled from N-VA-CNTs/GF with high performance and long-term durability hold great potential in the practical application of free-standing, flexible, rechargeable metal-air batteries.

引用

页码：2488 / 2495

页数：8

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