Zinc/selenium conversion battery: a system highly compatible with both organic and aqueous electrolytes
| Autor: | Qi Yang, Guojing Liang, Zhaodong Huang, Chunyi Zhi, Xinliang Li, Jun Fan, Qing Li, Ze Chen, Donghong Wang, Tairan Wang, Funian Mo, Ao Chen, Ying Guo |
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| Rok vydání: | 2021 |
| Předmět: |
Battery (electricity)
Aqueous solution Materials science Renewable Energy Sustainability and the Environment Inorganic chemistry chemistry.chemical_element Electrolyte Zinc Pollution Cathode law.invention Nuclear Energy and Engineering chemistry law Environmental Chemistry Low voltage Selenium Voltage |
| Zdroj: | Energy & Environmental Science. 14:2441-2450 |
| ISSN: | 1754-5706 1754-5692 |
| DOI: | 10.1039/d0ee02999h |
| Popis: | Zinc ion batteries (ZIBs) typically work well in aqueous electrolytes. Most high-performance cathode materials of aqueous ZIBs exhibit much-deteriorated capacity, voltage plateau and rate capability in organic electrolytes. It remains a challenge to have a Zn battery that is highly compatible with both aqueous and organic electrolytes. Herein, a conversion-type Zn–Se battery is constructed, which delivers a superior performance in both organic and aqueous electrolytes benefiting from a highly reversible conversion reaction between Se and ZnSe. Extraordinary capacities in organic systems (551 mA h gSe−1) and aqueous systems (611 mA h gSe−1) were successfully achieved, accompanied by a remarkable rate performance and cycling performance in each of the two systems. In addition, very low voltage plateau slopes, 0.94 V/(A h g−1) and 0.61 V/(A h g−1), are obtained for organic and aqueous systems, respectively, due to the advanced conversion mechanism. These unique features equip these Zn–Se batteries with unprecedented energy densities of up to 581 W h kgSe−1 (290 W h kgSe/CMK-3−1) for the organic system and 751 W h kgSe−1 (375 W h kgSe/CMK-3−1) for the aqueous system. Our research has developed a new Zn battery chemistry that benefits from a conversion mechanism and is highly compatible with both organic and aqueous electrolytes, opening a door for zinc batteries to achieve a higher energy density and better compatibility with various electrolytes. |
| Databáze: | OpenAIRE |
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