In situ coupled amorphous cobalt nitride with nitrogen-doped graphene aerogel as a trifunctional electrocatalyst towards Zn-air battery deriven full water splitting

Zou, Haiyuan1,2,3; Li, Ge4; Duan, Lele2,3; Kou, Zongkui1,5; Wang, John5

2019-12-15

10.1016/j.apcatb.2019.118100

APPLIED CATALYSIS B-ENVIRONMENTAL   影响因子和分区

0926-3373

1873-3883

Herein, we report a new type of efficient trifunctional electrocatalyst by in situ coupling amorphous cobalt nitride (CoNx) nanoparticles within three-dimensional (3D) nitrogen-doped graphene aerogel (NGA). The CoNx/NGA nanohybrid with hierarchical porous strucuture guarantees the superior activities toward ORR, OER and HER, due to abundant dual active CoNx. and NxC sites. Impressively, it also exhibits a long lifetime and exceptionally high electrochemical performances as a cathode and an anode in a two-electrode overall water splitting electrolyzer, and also as an air-cathode in a rechargeable Zn-air battery. In addition, the CoNx/NGA-based water splitting electrolyzer and two Zn-air batteries can be integrated together to effectively self-drive electrochemical water splitting device with high gas evolution rates of 186 and 372 mu mol h(-1) for O-2 and H-2, respectively. This work paves a way for designing advanced non-noble multifunctional catalysts, aiming for the real application of energy storage and conversion devices.

Amorphous CoNx Nitrogen-doped graphene aerogel Water electrolysis Zinc-air battery Electrochemistry

SCI ; EI

英语

通讯

Shenzhen Nobel Prize Scientists Laboratory Project[C17783101]

Chemistry ; Engineering

Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical

WOS:000488308800070

ELSEVIER

20193407344706

Aerogels ; Cathodes ; Cobalt compounds ; Doping (additives) ; Electrocatalysts ; Electrochemistry ; Electrolytic cells ; Graphene ; Nitrides ; Nitrogen

Colloid Chemistry:801.3 ; Electrochemistry:801.4.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2

CHEMISTRY

Web of Science

1.Harbin Inst Technol, Sch Chem & Chem Engn, 92 West Da Zhi St, Harbin 150001, Heilongjiang, Peoples R China
2.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Peoples R China
4.KTH Royal Inst Technol, Dept Chem, Appl Phys Chem, SE-10044 Stockholm, Sweden
5.Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117574, Singapore

Zou, Haiyuan,Li, Ge,Duan, Lele,et al. In situ coupled amorphous cobalt nitride with nitrogen-doped graphene aerogel as a trifunctional electrocatalyst towards Zn-air battery deriven full water splitting[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,259.

Zou, Haiyuan,Li, Ge,Duan, Lele,Kou, Zongkui,&Wang, John.(2019).In situ coupled amorphous cobalt nitride with nitrogen-doped graphene aerogel as a trifunctional electrocatalyst towards Zn-air battery deriven full water splitting.APPLIED CATALYSIS B-ENVIRONMENTAL,259.

Zou, Haiyuan,et al."In situ coupled amorphous cobalt nitride with nitrogen-doped graphene aerogel as a trifunctional electrocatalyst towards Zn-air battery deriven full water splitting".APPLIED CATALYSIS B-ENVIRONMENTAL 259(2019).