Preparation and characterization of carbon composite plates using Ni-PTFE composite nano-plating

Autor:	Susumu Yonezawa, Jae-Ho Kim, Masayuki Takashima
Rok vydání:	2013
Předmět:	Materials science Composite number General Physics and Astronomy chemistry.chemical_element Surfaces and Interfaces General Chemistry Conductivity Condensed Matter Physics Surfaces Coatings and Films chemistry Plating Electrode Nano Graphite Composite material Current density Carbon
Zdroj:	Applied Surface Science. 279:329-333
ISSN:	0169-4332
DOI:	10.1016/j.apsusc.2013.04.093
Popis:	Graphite particles (100 and 40 μm) were coated with Ni (18–38 wt.%) and PTFE fine particles (0.3 μm; 8 wt.%) via electroless Ni-PTFE composite nano-plating. The conductivity of C/Ni-PTFE with 100 μm and 40 μm graphite particles increased concomitantly with the Ni content and reached about 300 S m−1 and 210 S m−1 at 38 wt.% Ni, respectively. The particles were pressed into be plates under a pressure of 10–500 kg cm−2 and the plates were then subjected to heat treatment at 350 °C. The surface of C/Ni-PTFE plates contained infinitely many gaps of 0.01–20 μm; these gaps are useful as a pathway for reacting gases. The current density (43 mA cm−2 at 300 mV) of C/Ni-PTFE electrode with 100 μm graphite particles was about 2.4 times higher than that of C/Ni-PTFE electrode with 40 μm graphite particles, which might be attributed to the improvement of total conductivity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::713557be253c3594081b7135c4d4784d https://doi.org/10.1016/j.apsusc.2013.04.093 Zobrazit plný text záznamu Full Text from ScienceDirect