Electrochemical insertion of lithium into a doped diamond film grown on carbon felt substrates |
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| Affiliation: | 1. Instituto Nacional de Pesquisas Espaciais, INPE, 12245-970, São José dos Campos, Brazil;2. Departamento de Química, FFCLRP, Universidade de São Paulo, FFCLPR-DQ, 14040-901 Ribeirão Preto, Brazil;1. School of Physics, Beijing Institute of Technology, Beijing, 100081, China;2. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, 621900, China;3. Sichuan Co-Innovation Center for Materials, Southwest University of Technology, Mianyang, 621010, PR China;1. Functional Thin Films Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;2. Nano Science and Technology Institute, University of Science and Technology of China, Suzhou 215123, China;3. Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China;1. State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin, 150090, PR China;2. Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China |
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| Abstract: | This paper summarizes the preliminary results obtained from lithium electrochemical intercalation into boron-doped diamond films grown on carbon felt (BDD/CF electrode). BDD films have been grown by Hot Filaments Chemical Vapor Deposition (HFCVD) and have been characterized by Scanning Electron Microscopy (SEM) and Raman Scattering spectroscopy. BDD/CF composite electrodes, which contain a diamond layer, lead to higher conductivity and smaller grain sizes. In turn, they are richer in boundary or sp2 sites, and present a reversible specific capacity that is much larger than that of the substrate alone, indicating that the diamond layer effectively participates in lithium storage. Diamond layers displaying boron doping levels of 1019 and 1021 part cm? 3 provide a specific capacity of 160 and 370 mA h g? 1, respectively, which is associated with lithium storage. |
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