Exploration of Spinel LiCrTiO 4 as Cathode Material for Rechargeable Mg‐Li Hybrid Batteries
| Autor: | Hong Chen, Chunzhong Wang, Lu Zhang, Ye Yao, Xiaofei Bie, Gang Chen, Fei Du |
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| Rok vydání: | 2017 |
| Předmět: |
Phase transition
Mineralogy 02 engineering and technology Electrolyte engineering.material 010402 general chemistry Electrochemistry 01 natural sciences Catalysis Ion law.invention Metal law Chemistry Organic Chemistry Spinel General Chemistry 021001 nanoscience & nanotechnology Cathode 0104 chemical sciences Chemical engineering visual_art Electrode visual_art.visual_art_medium engineering 0210 nano-technology |
| Zdroj: | Chemistry – A European Journal. 23:17935-17939 |
| ISSN: | 1521-3765 0947-6539 |
| Popis: | Mg-Li hybrid batteries have attracted wide interest in recent years because of the potential safety as well as the cost benefit and high volumetric capacity. However, the slow kinetic properties strongly hinder their commercial application. In this study, we prepare spinel LiCrTiO4 by the solid-state reaction and conduct a comprehensive study on the improvement of its performance in Mg-Li hybrid batteries by optimizing the dual-salt electrolytes. It is found that LiCrTiO4 shows the reversible discharge/charge capacity of 178/169 mAh g-1 in the electrolyte of 1 M LiCl and 0.3 M APC (all-phenyl-complex). And when the concentration of APC increases to 0.4 M, LiCrTiO4 shows a high capacity retention of 95% after 30 cycles. In addition, no phase transition could be observed for the LiCrTiO4 electrode in dual-salts system, suggesting a highly electrochemical reversibility. Ex-situ EDX and SEM indicates that only Li+ ions are inserted into the cathode side, while Mg2+ ions reversibly deposit on the surface of Mg metal with no dendrite-like growth, indicative of good safety of Mg-Li hybrid batteries. |
| Databáze: | OpenAIRE |
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