MOFs-derived ZnCo-Fe core-shell nanocages with remarkable oxygen evolution reaction performance

Fu, Yang1; Wang, Weijun1; Wang, Jingwei1; Li, Xiangnan1; Shi, Run1; Peng, Owen1; Chandrashekar, Bananakere Nanjedowda1; Liu, Kai2; Amini, Abbas3,4; Cheng, Chun1

2019-08-07

10.1039/c9ta02017a

Journal of Materials Chemistry A   影响因子和分区

2050-7488

2050-7496

Various renewable energy systems, such as water splitting cells and metal-air batteries, are based on the oxygen evolution reaction (OER). The replacement of common noble-metal platinum catalysts with highly efficient, cheap, and operationally stable electrocatalysts opens huge potential applications for OER; thus, there have been increasing efforts to develop alternative efficient OER catalysts via low-cost fabrication processes. Herein, we report a facile self-templated method to synthesize ZnCo-Fe core-shell nanocages derived from metal-organic frameworks (MOFs) as an efficient catalyst for OER. The unique structure of ZnCo-Fe core-shell nanocages offers a large active surface area with abundant active sites and efficient charge transfer capability as the hollow structure facilitates the active direct contact of materials with electrolytes. We introduced these catalysts at different ratios of Fe, which had a significant effect on the electrocatalytic performance of OER. In other words, the introduction of Fe not only changed the composition but also changed the morphology to expose numerous active sites for OER. Owing to the synergistic effect between the element composition and abundant active sites, the optimized ZnCo-Fe-20 sample presented a superior electrocatalytic OER performance with a very low overpotential (eta = 176 mV at 10 mA cm(-2)) and a small Tafel slope (69.3 mV dec(-1)). This developed strategy can be easily extended to synthesize other MOF-derived polymetallic oxide-based hybrid electrodes for OER as a practical route for the design of cheap and efficient electrocatalysts.

SCI ; EI

英语

第一 ; 通讯

Peacock Team Project funding from the Shenzhen Science and Technology Innovation Committee[KQTD2015033110182370]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000476913600050

ROYAL SOC CHEMISTRY

20193007236296

Charge transfer ; Cobalt alloys ; Crystalline materials ; Electrocatalysts ; Metal-air batteries ; Morphology ; Organometallics ; Oxygen ; Precious metals ; Renewable energy resources ; Shells (structures) ; Ternary alloys ; Zinc alloys

Structural Members and Shapes:408.2 ; Energy Resources and Renewable Energy Issues:525.1 ; Iron Alloys:545.2 ; Zinc and Alloys:546.3 ; Precious Metals:547.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Crystalline Solids:933.1 ; Materials Science:951

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Tsinghua Univ, Tsinghua Foxconn Nanotechnol Res Ctr, State Key Lab New Ceram & Fine Proc,Dept Phys, Sch Mat Sci & Engn,State Key Lab Law Dimens Quant, Beijing 100084, Peoples R China
3.Western Sydney Univ, Ctr Infrastruct Engn, Penrith, NSW 2751, Australia
4.Australian Coll Kuwait, Dept Mech Engn, Mishref 13015, Kuwait

Fu, Yang,Wang, Weijun,Wang, Jingwei,et al. MOFs-derived ZnCo-Fe core-shell nanocages with remarkable oxygen evolution reaction performance[J]. Journal of Materials Chemistry A,2019,7(29):17299-17305.

Fu, Yang.,Wang, Weijun.,Wang, Jingwei.,Li, Xiangnan.,Shi, Run.,...&Cheng, Chun.(2019).MOFs-derived ZnCo-Fe core-shell nanocages with remarkable oxygen evolution reaction performance.Journal of Materials Chemistry A,7(29),17299-17305.

Fu, Yang,et al."MOFs-derived ZnCo-Fe core-shell nanocages with remarkable oxygen evolution reaction performance".Journal of Materials Chemistry A 7.29(2019):17299-17305.