Co single atoms and nanoparticles dispersed on N-doped carbon nanotube as high-performance catalysts for Zn-air batteries

Chen，Jing Jing1; Gu，Shuai2; Hao，Rui1; Wang，Zhen Yu1; Li，Mu Qing1; Li，Zhi Qiang1; Liu，Kun1; Liao，Ke Meng1; Wang，Zhi Qiang1; Huang，He1; Li，Ying Zhi1; Zhang，Kai Li2; Lu，Zhou Guang1

2022

10.1007/s12598-022-01974-7

RARE METALS   影响因子和分区

1001-0521

1867-7185

Diminishing the size of active sites in catalysts is promising to improve the kinetics of oxygen reduction reaction (ORR) and reduce the cost of metal–air batteries. However, the facile preparation of high-performance catalysts with nanoscale active sites still suffers from great challenge. Herein, we report a facile template-free strategy to fabricate Co single atoms and nanoparticles dispersed on porous N-doped carbon nanotube (Co-NCNT) by the pyrolysis of the composites of metal–organic complexes and porous carbon nanotube. Different from the conventional strategy, the precursor metal–organic complexes in this work were prepared under mild conditions and used without complex purification procedures. Compared with the pristine carbon nanotube, N-doped carbon nanotube with abundant mesopores contribute to the formation of nanoscale Co sites. This resultant electrocatalyst Co-NCNT shows an impressive ORR half-wave potential of 0.87 V in alkaline solution, outperforming that of commercial Pt/C (20 wt%). The catalyst Co-NCNT displays high tolerance to strong alkali solution, endowing the aqueous Zn-air batteries with high discharge voltages and power density. In addition, the specific capacity achieves 803 mAh·g under a current density of 10 mA·cm. This research provides a new solution for the simple synthesis of carbon-based electrocatalysts for metal–air batteries.

SCI ; EI

英语

第一

National Natural Science Foundation of China[21875097] ; Basic Research Project of the Science and Technology Innovation Commission of Shenzhen["JCYJ20200109141640095","JCYJ20190809115413414"] ; Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials[ZDSYS20200421111401738] ; Leading Talents of Guangdong Province Program[2016LJ06C536] ; Guangdong-Hong Kong-Macao Joint Laboratory[2019B121205001] ; Hong Kong Research Grants Council[CityU 11218420]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000777442000002

NONFERROUS METALS SOC CHINA

20221411886094

Catalyst activity ; Cobalt ; Doping (additives) ; Electrocatalysts ; Electrolytic reduction ; Metal nanoparticles ; Nanocatalysts ; Porous materials ; Reaction kinetics ; Zinc air batteries

Ore Treatment:533.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Secondary Batteries:702.1.2 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Crystalline Solids:933.1 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85127425489

Scopus

1.Department of Materials Science and Engineering,Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Mechanical Engineering,City University of Hong Kong,999077,Hong Kong

Chen，Jing Jing,Gu，Shuai,Hao，Rui,et al. Co single atoms and nanoparticles dispersed on N-doped carbon nanotube as high-performance catalysts for Zn-air batteries[J]. RARE METALS,2022,41:2055-2062.

Chen，Jing Jing.,Gu，Shuai.,Hao，Rui.,Wang，Zhen Yu.,Li，Mu Qing.,...&Lu，Zhou Guang.(2022).Co single atoms and nanoparticles dispersed on N-doped carbon nanotube as high-performance catalysts for Zn-air batteries.RARE METALS,41,2055-2062.

Chen，Jing Jing,et al."Co single atoms and nanoparticles dispersed on N-doped carbon nanotube as high-performance catalysts for Zn-air batteries".RARE METALS 41(2022):2055-2062.