ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 27    No. 6    June 2017

Effect of SnO2 intermediate layer on performance of Ti/SnO2/MnO2 electrode during electrolytic-manganese process
Xin CHEN, Hua-jun GUO, Shu-liang LUO, Zhi-xing WANG, Xin-hai LI
(School of Metallurgy and Environment, Central South University, Changsha 410083, China)
Abstract: SnO2 intermediate layers were coated on the titanium (Ti) substrate by thermal decomposition. Scanning electron microscope (SEM) and X-ray diffraction (XRD) results show that uniform SnO2 intermediate layers with rutile crystal structure were successfully achieved. According to the results of linear sweep voltammetry (LSV), oxygen evolution potential (OEP) of the Ti/SnO2/MnO2 electrodes decreases with increasing SnO2 content, indicating that the electro-catalytic oxidation activity of the electrode increases. Accelerated service life tests results demonstrate that SnO2 intermediate layer can improve the service life of the Ti/SnO2/MnO2 electrode. As the content of SnO2 intermediate layer increases, the cell voltage and the energy consumption decrease apparently.
Key words: tin dioxide intermediate layer; oxygen evolution potential; accelerated service life; cell voltage, electrolytic-manganese
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)