設(shè)計(jì)、制作了一套氧傳感器及測(cè)試裝置。通過(guò)在不同情況下測(cè)量其零電位,來(lái)研究傳感器溫度、內(nèi)外電極溫差、氣體流量和電極對(duì)零電位的影響。并在此基礎(chǔ)上進(jìn)行了物理化學(xué)和電化學(xué)的理論分析,確定了原電池溫度不均勻是影響零電位的主要因素。
關(guān)鍵詞: 二氧化鋯氧傳感器; 零電位; 鉑電極; 影響因素
Abstract : An oxygen sensor and test device was designed and fabricated. Under variable condition , the zero electric po2 tential was measured to investigate the influence of oxygen sensors temperature , difference in temperature between outer electrode and inner electrode , gas flux and electrode. Based on experimental data and theoretical analysis of physical
chemistry and electrochemistry ,it came to the conclusion that non2uniform cell temperature is the main source influencing the zero electric potential.
Key words : ZrO2 oxygen sensor ; zero electric potential(ZEP) ; platinum electrode ; influencing factors