High-energy, fast-charging, long-life lithium-ion batteries using TiNb2O7 anodes for automotive applications
| Autor: | Keigo Hoshina, Kazuki Ise, Takuya Iwasaki, Yasuhiro Harada, Norio Takami, Takashi Kishi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Composite number Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Cathode 0104 chemical sciences law.invention Anode State of charge chemistry Chemical engineering law Electrode Lithium Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology Carbon |
| Zdroj: | Journal of Power Sources. 396:429-436 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2018.06.059 |
| Popis: | Electrochemical properties of TiNb 2 O 7 (TNO) electrodes during lithium storage have been studied in order to develop an alternative anode with high-capacity, fast-charging, and long-life to Li 4 Ti 5 O 12 (LTO) in lithium-ion batteries. High-density TNO (HD-TNO) composite electrode consisting of micro-size spherical TNO secondary particles coated with carbon exhibited high-rate capability, long cycle-life, and a high volumetric capacity of more than twice that of LTO composite anodes. Large-size lithium-ion batteries using the HD-TNO anode and a LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM) cathode with a capacity of 49 A h were fabricated for automotive applications, and were found to have a high energy density of 350 W h L −1 , a high input-power density of 10 kW L −1 for 10 s at 50% state of charge (SOC), and fast-charging from 0% to 90% SOC in less than 6 min. The capacity retention at 7000 cycles was 86% by full charge-discharge cycling at 1C rate. Cycle life was predicted to be 14000 cycles at 80% capacity retention. It was demonstrated that the TNO/NCM batteries have high energy-density, fast-charging, and long cycle-life for automotive applications such as electric vehicles with long driving ranges by fast-charging. |
| Databáze: | OpenAIRE |
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