Study on the anomalous corrosion of oxygen evolving electrode in organic electrolysis and the development of new electrode materials

有机电解析氧电极异常腐蚀研究及新型电极材料开发

• 批准号: 62470074
• 负责人: TAKAHASHI Masao
• 金额: $ 4.22万
• 依托单位: Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62470074/
• 关键词: electrolysis; electrode; organic electrolysis; platinum group electrode; チタン基体電極; 電解用電極材料; 有機電解; 白金族系電極; 電極の異常消耗

The cathodic electrolytic reduction processes occured on the surface of negative pole elctrode are widely applied in many industrial processes,namely electrowinning and elctroplating of metals,and elctrolytic reduction of organic substances. In these elctrolytic processes,the oxygen evolution reaction by the oxidation of water are widely applied as the aimless anodic oxidation process occured on the surface of counter positive pole electrode. For these counter electrode materials,the lead alloys were used up to recent time and at last long-expected high performance elctrode were developed. This newly developed materials are platimum group element coated titanium electrode,for example iridium dioxide coated titanium. But applying this electrode for organic electrolytic proxesses,unexpected anomalous corrosion of electrode are occured.In this study,this anomalous phenomena caused by the interaction of organic substances and the oxygen evolving electrode surfaces were clarefied.And then the highly resistive electrode coating to organic substances were developed by the addition of tantalum oxide to iridiun dioxide coatings. This newly developed electrode of Ir(70mol%)Ta(30mol%)-oxide coated titanium have good performance of high resistance to electrolytic weare and low electrode potential for oxygen evolution.

发生在负极电极表面的阴极电解还原过程在许多工业过程中得到了广泛的应用，即金属的电积和电镀，以及有机物的电解还原。在这些电解过程中，水的氧化析氧反应由于发生在对极电极表面的无目标阳极氧化过程而被广泛应用。对于这些对电极材料，直到最近才开始使用铅合金，最终开发出了人们期待已久的高性能电极。这种新开发的材料是铂族元素涂覆的钛电极，例如二氧化铱涂覆的钛。但将该电极应用于有机电解液时，电极会发生意外的异常腐蚀，本研究将这种由有机物与析氧电极表面相互作用引起的异常现象消除，并通过在二氧化铟涂层中添加氧化钽的方法研制出对有机物具有高阻性的电极涂层。这种新研制的Ir(70m ol%)Ta(30m o l%)氧化物涂层钛电极具有良好的耐电解性和低析氧电极电位。

项目成果

Masao Takahashi: "Electrochemical studies on the development of industrial electrode materials supported on titanium (Part 4)" Soda To Enso(Soda and chlorine). 39. 531-540 (1988)

高桥正夫：“钛负载工业电极材料开发的电化学研究（第4部分）”Soda To Enso（苏打和氯）。

Masao Takahashi: "Electrochemical studies on the development of industrial electrode materials supported on titanium (Part 2)" Soda To Enso(Soda and chlorine). 39. 395-414 (1988)

高桥正夫：“钛负载工业电极材料开发的电化学研究（第2部分）”Soda To Enso（苏打和氯）。

高橋正雄: ソーダと塩素. 39. 261-276 (1988)

高桥正男：苏打和氯。39. 261-276 (1988)

Masao Takahashi: "Electrochemical studyis on the development of industrial electrode materials supported on titanium (Part 1)" Soda To Enso(Soda and chlorine). 39. 261-276 (1988)

高桥正雄：“电化学研究是关于钛支持的工业电极材料的开发（第 1 部分）”Soda To Enso（苏打和氯）。

高橋正雄: ソーダと塩素. 38. 215-237 (1987)

高桥正男：苏打和氯。38. 215-237 (1987)