Creation of micro and macro spaces by electrospinning and application to electrode materials of energy devices
Autor: | Y. Takizawa, K. Oshida, N. Kobayashi, Shusei Sato, M. Murata, K. Osawa, T. Itaya |
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Rok vydání: | 2020 |
Předmět: |
Materials science
Scanning electron microscope Carbon nanofiber Mechanical Engineering Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Lithium-ion battery Electrospinning Energy storage 0104 chemical sciences Mechanics of Materials Nanofiber Electrode General Materials Science Graphite 0210 nano-technology |
Zdroj: | MRS Advances. 5:1423-1431 |
ISSN: | 2059-8521 |
Popis: | This study aims to create controlled fine space by electrospinning, and to develop the electrode materials for high-performance energy devices. With the popularization of mobile devices, household appliances, hybrid vehicles, electric vehicles, and the like, the use of power storage devices is expanding, and further performance improvements are required. In this study, a novel electrode material was developed by compositing Si with carbon nanofibers derived from polyacrylonitrile (PAN) by electrospinning and heat treatment. The texture and structure of the nanofibers were observed and analyzed by scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX) and transmission electron microscopy (TEM) combined with image processing. Nano spaces were created in the CNFs and Si particles were able to be contained in the CNFs. In the second and subsequent cycles of the charge/discharge experiments of lithium ion battery (LIB) electrode made from the materials, the capacity was more than twice the theoretical capacity using graphite, and good cycle performance was obtained. |
Databáze: | OpenAIRE |
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