| 第一作者： | Wang, C (Wang, Chen); Guo, ZY (Guo, Ziyang); Zhang, S (Zhang, Shu); Chen, GD (Chen, Guodong); Dong, SM (Dong, Shanmu); Cui, GL (Cui, Guanglei); |
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| 联系作者： | Wang, C (Wang, Chen); Guo, ZY (Guo, Ziyang); Zhang, S (Zhang, Shu); Chen, GD (Chen, Guodong); Dong, SM (Dong, Shanmu); Cui, GL (Cui, Guanglei); |
| 发表年度： | 2021 |
| 卷： | 43 |
| 页： | 221-228 |
| 摘要： | The only way for commercial application of Li - air batteries with open structure is to receive O-2 from ambient air. Nevertheless, H2O-containing ambient air easily induces Li passivation/dendrites and electrolyte decomposition. Apart from above issues, volatilization and leakage of organic liquid electrolytes and relatively infinite dimension variation of metallic Li also seriously discount performance of Li - air batteries. Herein, Li coating polythiophene-derived ( S-doped) carbon fiber-based electrode (Li/SC) is prepared by simple rolling method and then in situ coated with deep eutectic solvent-based polymer electrolyte (DES-PE), which are further applied as anode and electrolyte of Li - air battery, respectively. Theoretical/experimental data suggest that SC skeleton possess excellent lithiophilicity/stability which restrain dendritic Li formation and reduce electrode structure damage over cycles. Furthermore, DES-PE not only possesses high ionic conductivity (1.19*10(-3) S cm(-1), 30 degrees C), wide electrochemical window (5.0 V), no-leakage and excellent interfacial compatibility, but also combine with SC framework to greatly reduce Li passivation induced by ambient air. Hence, DES-PE@Li/SC based Li - air battery could exhibit extra-large capacity of 15,310 mAh g(-1) at 100 mA g(-1), high-capacity retention even under high current (11,896 mAh g(-1) at 500 mA g(-1)) and extra-long cycling life up to 300 cycles under fixed capacity. This result provides enlightment for the advancement of Li-air batteries. |
| 刊物名称： | ENERGY STORAGE MATERIALS |
| 影响因子： | 0 |
| 全文链接： | https://www.sciencedirect.com/science/article/pii/S2405829721004116?via%3Dihub |
