caa a22 4500 38801993X CHVBK 20180307124921.0 cr unu---uuuuu 161130e199804 xx s 000 0 eng 10.1557/JMR.1998.0109 doi S0884291400043466 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0109 Electrochemical preparation of cobalt oxide using an autoclave electrolytic cell [Elektronische Daten] Polycrystalline films of cobalt oxides (Co3O4 and CoOOH) with and without Sm were fabricated on platinum substrates by electrochemical oxidation in an autoclave. The cobalt oxides were directly crystallized at temperatures higher than about 100 °C during electrolysis. The composition of the cobalt oxides strongly depended on the electrode potential; i.e., Co3O4 and CoOOH were formed in non-noble and relatively noble potential regions, respectively. When Sm was incorporated in the CoOOH by the electrolysis in solutions containing Sm3+, only the c lattice constant was increased due to an expansion in the layer structure. Copyright © Materials Research Society 1998 Koinuma Michio Department of Applied Chemistry, Faculty of Engineering, Kumamoto University, Kurokami 2-39-1, Kumamoto 860, Japan Hirae Tomohiko Department of Applied Chemistry, Faculty of Engineering, Kumamoto University, Kurokami 2-39-1, Kumamoto 860, Japan Matsumoto Yasumichi Department of Applied Chemistry, Faculty of Engineering, Kumamoto University, Kurokami 2-39-1, Kumamoto 860, Japan Journal of Materials Research Cambridge University Press 13/4(1998-04), 837-839 0884-2914 13:4<837 1998 13 JMR https://doi.org/10.1557/JMR.1998.0109 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0109 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Koinuma Michio Department of Applied Chemistry, Faculty of Engineering, Kumamoto University, Kurokami 2-39-1, Kumamoto 860, Japan NATIONALLICENCE 700 1- Hirae Tomohiko Department of Applied Chemistry, Faculty of Engineering, Kumamoto University, Kurokami 2-39-1, Kumamoto 860, Japan NATIONALLICENCE 700 1- Matsumoto Yasumichi Department of Applied Chemistry, Faculty of Engineering, Kumamoto University, Kurokami 2-39-1, Kumamoto 860, Japan NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/4(1998-04), 837-839 0884-2914 13:4<837 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge