首页|钛基掺SnO2-Ta2O5中间层复合阳极的制备及强化寿命研究

钛基掺SnO2-Ta2O5中间层复合阳极的制备及强化寿命研究

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分别在350、400、450、500、550 ℃温度下通过热分解法制备了活性层原子质量比Ir∶Ru∶Ti=1∶3∶3,含钽-锡中间层数1、2、3、4、5的DSA阳极,通过直观的加速寿命试验探究了不同温度、不同中间层数和不同的钽-锡中间层原子比(Ta∶Sn=9∶1、8∶2、7∶3、6∶4、5∶5)对RuO2-IrO2-TiO2/SnO2-Ta2O5/Ti复合阳极在酸性析氧条件下性能的影响,通过X射线衍射(XRD)、热场发射扫描电子显微镜(SEM)及能谱(EDS)分析电极表面的物相和形貌变化,通过电化学阻抗谱探讨了 RuO2-IrO2-TiO2/SnO2-Ta2O5/Ti电极的电化学性能,重点考察了涂层溶液配比对电极性能的影响.结果表明,电极的最佳中间层数为1且最佳温度为450 ℃;在中间层数为1、450 ℃条件下,当中间层Ta∶Sn=9∶1时,RuO2-IrO2-TiO2/SnO2-Ta2O5/Ti电极性能最佳,相比不含中间层的RuO2-IrO2-TiO2/Ti电极的寿命提升约53％.
Preparation and Strengthening Life Study of Ti-based SnO2-Ta2O5 Intermediate Layer Composite Anode
DSA anodes with active layer atomic mass ratio Ir∶Ru∶Ti=1∶3∶3 and tantalum tin intermediate layers 1,2,3,4,and 5 were prepared by thermal decomposition method at temperatures of 350,400,450,500 and 550 ℃,respectively.Different temperatures were explored through intuitive accelerated life tests The effect of different numbers of intermediate layers and different atomic ratios of tantalum tin intermediate layers(Ta∶Sn=9∶1,8∶2,7∶3,6∶4,5∶5)on the performance of RuO2-IrO2-TiO2/SnO2-Ta2O5/Ti composite anodes under acidic oxygen evolution conditions was investigated.The phase and morphology changes on the electrode surface were analyzed by X-ray Diffraction(XRD),thermal field emission Scanning Electron Microscopy(SEM),and Energy Dispersive Spectroscopy(EDS).The electrochemical performance of RuO2-IrO2-TiO2/SnO2-Ta2 O5/Ti electrode was investigated by electrochemical impedance spectroscopy.The focus was on investigating the effect of coating solution ratio on electrode performance.The results show that the optimal number of intermediate layers for the electrode is 1 and the optimal temperature is 450 ℃;At 450 ℃ with 1 intermediate layer,when the intermediate layer Ta∶Sn=9∶1,the RuO2-IrO2-TiO2/SnO2-Ta2O5/Ti electrode exhibits the best performance,with a lifespan improvement of about 53％compared to the RuO2-IrO2-TiO2/Ti electrode without an intermediate layer.

titanium coated electrodesTa2O5-SnO2 intermediate layeroxygen evolutionenhanced electrolysis lifespan

宋贺庆、杨海涛、俞小花、胡超权

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昆明理工大学冶金与能源工程学院,昆明 650093

中国科学院过程工程研究所,北京 100190

中科南京绿色制造产业创新研究院,南京 211135

钛涂层电极 Ta2O5-SnO2中间层 析氧 强化电解寿命

国家自然科学基金资助项目国家自然科学基金资助项目多相复杂系统国家重点实验室项目中国科学院绿色过程制造创新研究院云南省万人计划项目

2207832851504231MPCS-2022-A-02IAGM2022D08YNWR-QNBJ-2018-327

2024

10.3969/j.issn.2095-1744.2024.09.003

有色金属工程
北京矿冶研究总院

有色金属工程

CSTPCD北大核心
影响因子：0.432
ISSN：2095-1744
年,卷(期)：2024.14(9)
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