Freestanding conversion-type anode via one-pot formation for flexible Li-ion battery
| Autor: | Sun-Sik Kim, Hun Seong Kim, Hyun Young Jung, Chenrayan Senthil, Dong Won Kim |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Battery (electricity)
Materials science General Chemical Engineering Nanowire Oxide 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering Energy storage chemistry.chemical_compound Environmental Chemistry Cryptomelane Thin film business.industry General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Anode chemistry Electrode engineering Optoelectronics 0210 nano-technology business |
| Zdroj: | Chemical Engineering Journal. 427:130937 |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2021.130937 |
| Popis: | Transition metal oxide-based anodes are an attractive candidate for high performance next-generation batteries due to their high theoretical capacity. However, their practical applications toward high energy density are limited due to the inactive materials in the electrode and large volume expansion during Li insertion and extraction processes. Here, we report a one-pot formation method of cryptomelane manganese oxide nanowires-based freestanding anode for Li-ion storage. The freestanding electrodes are completed simply by vacuum drying a controlled in-situ hydrogel thin film with no additional process, achieving flexible devices without a binder. The porous electrode structure via such a one-pot synthesis makes it capable of multidimensional Li-ion accessibility and volume change suppression. As a result, the mechanically flexible anode delivers the reversible capacity of about 525 mAh g−1 after 400th cycles at 1.0 A g−1. This study opens up the feasibility of one-pot synthesis in the design of various conversion-type electrodes to realize ultra-light, flexible energy storage devices. |
| Databáze: | OpenAIRE |
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