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Preparation of large-scale double-side BDD electrodes and Their electrochemical Performances

Transactions of Nanjing University of Aeronautics and Astronautics 2015年第6期32卷 674-680页

作者：吴海兵徐锋刘召志周春卢文壮左敦稳 College of Mechanical and electrical Engineering Nanjing University of Aeronautics and Astronautics

Boron doped diamond(BDD)performs well in electrochemical oxidation for organic pollutants thanks to its wide electrochemical window and superior chemical *** presented a method to obtain well-adherent large-scale BDD/Nb electrode by the modified hot filament chemical vapor deposition system(HFCVD).SiC particles were sand blasted to enhance the adhesion of BDD *** BDD coating was then deposited on both sides of Nb which was placed vertically and closely with filament grids on both *** BDD/Nb electrodes had no deformation because the thermal deformations of the BDD films on both sides of the Nb substrate conteracted each other during cooling process after *** surface morphology and purity of the BDD/Nb electrode were analyzed by Raman and scanning elestron microscope(SEM)*** test was used to investigate the adhesion of BDD *** electrochemical performances were measured by cyclic voltammetry *** BDD electrode at the B/C ratio of 2 000×10^(-6) held a higher oxygen evolution potential thanks to its high sp3 carbon *** life test illustrated that the sandblasting pretreatment obviously enhanced the adhesion of BDD coating which resulted in a longer service duration than the un-sandblasted one.

关键词： hot filament chemical vapor deposition(CVD) boron doped diamond large-scale double side elec-trode electrochemical performances

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