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Outline
To improve the electrochemical performance of aluminum-air batteries, Br- and I- with weak electronegativity were adopted to regulate the hydrogen-bond structure of electrolyte and modify the electrode-electrolyte interface, so as to suppress hydrogen evolution corrosion of aluminum anode. The results indicate that the introduction of Br- and I- into electrolyte can significantly reduce the hydrogen evolution rate and self-corrosion rate of aluminum anodes, and remarkably improve the electrochemical performance of both aluminum anodes and aluminum-air batteries. After adding 3 mol/L KBr and 5 mol/L KI into KOH electrolyte, the hydrogen evolution rate and self-corrosion rate of aluminum anodes decrease to 13.79 mL/(cm2·h) and 13.5 mg/(cm2·h), 9.54 mL/(cm2·h) and 11.5 mg/(cm2·h), respectively. The corresponding corrosion inhibition efficiencies are 42.4% and 50.9%. Furthermore, the discharge specific capacities of the aluminum-air batteries can reach 1 167.1 mAh/g and 1 674.4 mAh/g at 25 mA/cm2.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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