Satisfying both sides: Novel low-cost soluble redox mediator ethoxyquin for high capacity and low overpotential Li-O-2 batteries
文献类型：期刊论文
| 作者 | Wan, Hao; Sun, Yingjie; Li, Zhendong; Wang, Weiwei; Zhu, Yongchun; Qian, Yitai |
| 刊名 | ENERGY STORAGE MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 40页码:159-165 |
| 关键词 | LITHIUM-OXYGEN BATTERY LI2O2 DISCHARGE CATALYST NANOPARTICLES SUPEROXIDE REDUCTION SOLVATION |
| 英文摘要 | Due to cathode passivation caused by the insulating discharged products and by-products, Li-O-2 batteries sustain some obstacles encompassing poor discharge capacity and high overpotential. Herein, we introduce 6-Ethoxy2,2,4-trimethylquinoline (EQ) as a bifunctional redox mediator into electrolyte and investigate its influence on the electrochemical performance of Li-O-2 batteries. Strikingly, the discharge process is promoted in the solution phase by the solvated Li+ with EQ, and the correlative capacity exhibits more than a 30-fold increase than pristine Li-O-2 battery at the current density of 3000 mA g(-1) carbon. DFT calculations further clarify the working mechanism of oxygen reduction reaction (ORR) induced by EQ. Furthermore, the surface electrostatic potential diagram shows that N and O atoms in EQ are electron-rich, which is prone to donate electrons to get its desirable oxidation state and effectively catalyze the oxidation of Li2O2, resulting in the extremely low charge plateau at 3.08 V and longtime stable cyclability (150 cycles at a current density of 500 mA g(-1) carbon with a fixed capacity of 1000 mAh g(-1) carbon). |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21626]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Zhu, YC 2.Qian, YT (corresponding author), Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Sch Chem & Mat Sci, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wan, Hao,Sun, Yingjie,Li, Zhendong,et al. Satisfying both sides: Novel low-cost soluble redox mediator ethoxyquin for high capacity and low overpotential Li-O-2 batteries[J]. ENERGY STORAGE MATERIALS,2021,40:159-165. |
| APA | Wan, Hao,Sun, Yingjie,Li, Zhendong,Wang, Weiwei,Zhu, Yongchun,&Qian, Yitai.(2021).Satisfying both sides: Novel low-cost soluble redox mediator ethoxyquin for high capacity and low overpotential Li-O-2 batteries.ENERGY STORAGE MATERIALS,40,159-165. |
| MLA | Wan, Hao,et al."Satisfying both sides: Novel low-cost soluble redox mediator ethoxyquin for high capacity and low overpotential Li-O-2 batteries".ENERGY STORAGE MATERIALS 40(2021):159-165. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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