Pt/IrO x -pH超微电化学传感器性能探究及其在铜/不锈钢电偶腐蚀研究中的应用

Pt/IrO _x -pH超微电化学传感器性能探究及其在铜/不锈钢电偶腐蚀研究中的应用

张勤号, 朱泽洁, 蔡浩冉, 李鑫冉, 孟宪泽, 李昊, 伍廉奎, 罗荘竹, 曹发和

Performance of Pt/IrO _x -pH Ultra-micro Electrochemical Sensor and its Application in Study of Galvanic Corrosion of Copper/Stainless Steel

ZHANG Qinhao, ZHU Zejie, CAI Haoran, LI Xinran, MENG Xianze, LI Hao, WU Liankui, LUO Zhuangzhu, CAO Fahe

图3 Pt/IrO _x -pH传感器在不同pH的3.5% NaCl溶液中OCP和响应电位与pH的线性关系及其拟合曲线，Pt/IrO _x -pH传感器在含有5 mmol/L Fe²⁺，Cu²⁺和Ti³⁺的3.5 % NaCl溶液 (pH=2.00) 中的OCP以及Pt/IrO _x -pH传感器在含5 mmol/L Fe²⁺或Cu²⁺溶液中的电极电位及其拟合曲线

Fig.3 OCP (a) and linear relationship between response potential and pH and its fitting curve of Pt/IrO _x -pH sensor in 3.5% NaCl solution with different pH value (b), OCP of Pt/IrO _x -pH sensor in 3.5% NaCl solution (pH=2.00) containing 5 mmol/L Ti³⁺, Fe²⁺ and Cu²⁺, respectively (c), electrode potential of Pt/IrO _x -pH sensor in 5 mmol/L Fe²⁺ or Cu²⁺ solution and its fitting curve (d)