Greatly promoted oxygen reduction reaction activity of solid catalysts by regulating the stability of superoxide in metal-O2 batteries 金属-氧气电池中调控超氧化物稳定性实现大幅增强的固体催化剂氧还原反应活性

Wang，Hua1; Liu，Liangliang1; Liu，Xiao1; Jia，Yu1; Zhang，Peng2,3; Zhang，Yong1

2021-04-01

10.1007/s40843-020-1519-9

Science China-Materials   影响因子和分区

2095-8226

2199-4501

Oxygen reduction reactions (ORRs) with one- or two-electron-transfer pathways are the essential process for aprotic metal-oxygen batteries, in which the stability of superoxide intermediates/products (O, LiO, NaO, etc.) mainly dominates the ORR activity/stability and battery performance. However, little success in regulating the stability of the superoxides has been achieved due to their highly reactive characteristics. Herein, we identified and modulated the stability of superoxides by introducing anthraquinone derivatives as cocatalysts which functioned as superoxide trapper adsorbing the superoxides generated via surface-mediated ORR and then transferring them from the solid catalyst surface into electrolyte. Among the studied trappers, 1,4-difluoroanthraquinone (DFAQ) with electron-withdrawing groups showed the highest adsorption towards superoxides and could efficiently stabilize LiO in electrolyte, which greatly promoted the surface-mediated ORR rate and stability. This highlighted the magnitude of adsorption between the trapper and LiO2 on the ORR activity/stability. Using an aprotic Li-O battery as a model metal-O battery, the overall performance of the cell with DFAQ was substantially improved in terms of cell capacity, rate capability and cyclic stability. These results represent a significant advance in the understanding of ORR mechanisms and promoting the performance of metal-O batteries.

adsorption energy lithium oxygen battery oxygen reduction reaction superoxide

SCI ; EI

中文

其他

National Natural Science Foundation of China[21773055,"U1604122",51702086,21203055,21805070] ; Program for Science & Technology Innovation Talents in Universities of Henan Province[18HASTIT004] ; China Postdoctoral Science Foundation[2020M672201]

Materials Science

Materials Science, Multidisciplinary

WOS:000626088100009

SCIENCE PRESS

20211010055167

Catalyst activity ; Electrolytic reduction ; Electron transport properties ; Ketones ; Lithium compounds ; Metals ; Oxygen ; Oxygen reduction reaction ; Reaction intermediates ; Solid electrolytes ; Stability

Ore Treatment:533.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1

2-s2.0-85102135882

Scopus

1.Key Lab for Special Functional Materials of Ministry of Education; National & Local Joint Engineering Research Center for High-efficiency Display and Lighting Technology; School of Materials Science and Engineering; Collaborative Innovation Center of Nano Functional Materials and Applications,Henan University,Kaifeng,475004,China
2.Department of Materials Science & Engineering,Shenzhen,Key Laboratory of Solid State Batteries Shenzhen,Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Southern University of Science and Technology,Shenzhen,518055,China
3.College of Chemistry and Molecular Sciences,Hubei Key Laboratory of Electrochemical Power Sources,Wuhan University,Wuhan,430072,China

Wang，Hua,Liu，Liangliang,Liu，Xiao,等. Greatly promoted oxygen reduction reaction activity of solid catalysts by regulating the stability of superoxide in metal-O2 batteries 金属-氧气电池中调控超氧化物稳定性实现大幅增强的固体催化剂氧还原反应活性[J]. Science China-Materials,2021,64(4):870-879.

Wang，Hua,Liu，Liangliang,Liu，Xiao,Jia，Yu,Zhang，Peng,&Zhang，Yong.(2021).Greatly promoted oxygen reduction reaction activity of solid catalysts by regulating the stability of superoxide in metal-O2 batteries 金属-氧气电池中调控超氧化物稳定性实现大幅增强的固体催化剂氧还原反应活性.Science China-Materials,64(4),870-879.

Wang，Hua,et al."Greatly promoted oxygen reduction reaction activity of solid catalysts by regulating the stability of superoxide in metal-O2 batteries 金属-氧气电池中调控超氧化物稳定性实现大幅增强的固体催化剂氧还原反应活性".Science China-Materials 64.4(2021):870-879.