摘要
应用循环伏安法研究了聚合前驱体热分解法制备的Ti/TiO2膜电极在pH=1的H2SO4溶液和pH=14的NaOH溶液中的电化学活化表面积。结果表明,相同条件下制备的Ti/TiO2膜电极在H2SO4溶液中的伏安电荷容量要远远高于在NaOH溶液中的伏安电荷容量,电极在不同pH值溶液中的内电化学活化表面积又远远高于外电化学活化表面积。因此电极表面活化表面积的大小与电极的结构以及溶液的pH值有关。
The Ti/TiO2 film electrodes were prepared by polymeric precursor method (PPM). The voltammetric charges q* of Ti/TiO2 electrodes as the cathode in the H2SO4 solutions pH=1 and the NaOH solutions pH=14 were obtained by the cyclic voltammetry. The experimental results show that the voltammetric charge q* of the Ti/TiO2 in the H2SO4 solutions is much more than q* in the NaOH solutions at the same preparation condition, and 'inner' electro-chemical active surface is much more than 'outer' electro-chemical active surface. Therefore, the electro-chemical active surface of electrodes is related to the electrode surface structure and solutions pH.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2005年第7期1081-1084,共4页
Rare Metal Materials and Engineering
基金
江苏省高校自然科学研究计划项目(03KJB530164)
国家自然科学基金资助项目(20176047)
