Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/37898
Título: | Ge thin film anode in a flexible solid-state Li-ion microbattery |
Autor(es): | Vieira, E. M. F. Ribeiro, J. F. Rua, João Silva, Maria Manuela Correia, J. H. Goncalves, L. M. |
Data: | 23-Out-2015 |
Resumo(s): | Flexible solid-state lithium ion batteries (LIBs) have become an important part of the portable electronics due to their flexibility, lightweight, easy portability, security and the ability to be adjusted in large-scale energy storage microsystems, with significantly high power and long cycle life. Germanium (Ge) is a promising anode material for high-generation LIBs, with high theoretical capacity (1600 mAh/g corresponding to Li4.4Ge), fast Li ion diffusivity (i.e. 400 times faster than silicon) and good electronic conductivity (104 times higher than silicon) which allow high charge/discharge rates. Here, electrochemical performance of e-beam deposited Ge anode (300 nm thick) coupled with LiCoO2/LIPON (cathode/electrolyte) in a microbattery system was investigated. The battery (figure 1) was fabricated only by PVD techniques. LiCoO2 was deposited by RF-sputtering (120 W RF power; 17 sccm of Ar) and LIPON with the conditions explained in JF Ribeiro, et al. [1]. Open circuit potential (figure 2), charge/discharge cycles (figure 3) and electrochemical impedance spectroscopy (EIS), at room temperature, were performed. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/37898 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDQuim - Comunicações e Proceedings DEI - Artigos em atas de congressos internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Artigo_ElianaVieira.pdf Acesso restrito! | Conference Paper | 572,27 kB | Adobe PDF | Ver/Abrir |