High-energy long-cycling all-solid-state lithium metal batteries enabled by silver–carbon composite anodes
| Autor: | Changhoon Jung, Dong-Su Ko, Nobuyoshi Yashiro, In Taek Han, Tomoyuki Shiratsuchi, Naoki Suzuki, Dongmin Im, Jun Hwan Ku, Taku Watanabe, Yonggun Lee, Yuichi Aihara, Ryo Omoda, Saebom Ryu, Youngsin Park, Satoshi Fujiki, Toshinori Sugimoto |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Battery (electricity)
chemistry.chemical_classification Materials science Sulfide Renewable Energy Sustainability and the Environment Composite number Energy Engineering and Power Technology 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Anode Fuel Technology Chemical engineering chemistry Electrode 0210 nano-technology Faraday efficiency |
| Zdroj: | Nature Energy. 5:299-308 |
| ISSN: | 2058-7546 |
| Popis: | An all-solid-state battery with a lithium metal anode is a strong candidate for surpassing conventional lithium-ion battery capabilities. However, undesirable Li dendrite growth and low Coulombic efficiency impede their practical application. Here we report that a high-performance all-solid-state lithium metal battery with a sulfide electrolyte is enabled by a Ag–C composite anode with no excess Li. We show that the thin Ag–C layer can effectively regulate Li deposition, which leads to a genuinely long electrochemical cyclability. In our full-cell demonstrations, we employed a high-Ni layered oxide cathode with a high specific capacity (>210 mAh g−1) and high areal capacity (>6.8 mAh cm−2) and an argyrodite-type sulfide electrolyte. A warm isostatic pressing technique was also introduced to improve the contact between the electrode and the electrolyte. A prototype pouch cell (0.6 Ah) thus prepared exhibited a high energy density (>900 Wh l−1), stable Coulombic efficiency over 99.8% and long cycle life (1,000 times). Solid-state Li metal batteries represent one of the most promising rechargeable battery technologies. Here the authors report an exceptional high-performance prototype solid-state pouch cell made of a sulfide electrolyte, a high-Ni layered oxide cathode and, in particular, a silver–carbon composite anode with no excess Li. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink