<span id="fpn9h"><noframes id="fpn9h"><span id="fpn9h"></span>
<span id="fpn9h"><noframes id="fpn9h">
<th id="fpn9h"></th>
<strike id="fpn9h"><noframes id="fpn9h"><strike id="fpn9h"></strike>
<th id="fpn9h"><noframes id="fpn9h">
<span id="fpn9h"><video id="fpn9h"></video></span>
<ruby id="fpn9h"></ruby>
<strike id="fpn9h"><noframes id="fpn9h"><span id="fpn9h"></span>

CTAB對Pb-Ag陽極MnO2鍍膜電化學性能的影響

Effect of CTAB on the electrochemical performance of MnO2 coatings deposited on Pb-Ag anode

  • 摘要: 本文以十六烷基三甲基溴化銨 (CTAB) 為添加劑,通過干預Pb-Ag陽極表面MnO2的電結晶過程,誘導生成具有良好耐蝕性和析氧活性的MnO2膜層。研究表明,鋅電積體系中適量CTAB的引入可加速Mn2+ → Mn3+中間體的氧化,促進MnO2的電結晶生長并均勻包覆在Pb-Ag基體上,有效提升電極的催化析氧活性和耐腐蝕性能。在模擬長周期工業鋅電積過程中,1 g·L-1 CTAB輔助鍍膜下制得的Pb-Ag/MnO2陽極 (PAM-C1) 較之工業鍍膜條件下制備的MnO2鍍膜陽極 (IPAM),具有更優的析氧和耐蝕性能:500 A·m-2下,PAM-C1陽極的析氧電位 (2.09 V vs. RHE) 較IPAM (2.14 V vs. RHE) 低50 mV,且性能穩定;經15天電解,相較IPAM陽極,基于PAM-C1陽極的電鋅體系中溶鉛量由0.7 mg·L-1降低為0.6 mg·L-1。

     

    Abstract: This issue results in problems such as reduced zinc product quality. In this study, cetyltrimethyl ammonium bromide (CTAB) was utilized as an additive to induce the formation of a MnO2 film with excellent corrosion resistance and oxygen evolution activity by interfering with the electrocrystallization process of MnO2 on the Pb-Ag anode surface. The findings demonstrate that introducing appropriate CTAB into the zinc electrodeposition system can accelerate the oxidation of Mn2+ → Mn3+ intermediates, promote uniform electrocrystallization growth of MnO2 on the Pb-Ag substrate, effectively enhance catalytic oxygen evolution activity and corrosion resistance of the electrode. During long-term industrial zinc electrowinning simulation, it was observed that compared to industrially coated MnO2-coated anodes (IPAM), 1 g·L-1 CTAB-assisted prepared Pb-Ag/MnO2 anode (PAM-C1) exhibit superior oxygen evolution performance and corrosion resistance. At 500 A·m-2, the oxygen evolution potential (2.09 V vs RHE) on PAM-C1 is 50 mV lower than that on IPAM (2.14 V vs RHE), while maintaining stable performance. After 15 days of electrolysis, the lead concentration in the PAM-C1-based system decreases from 0.70 mg·L-1 to 0.61 mg·L-1 compared to IPAM-based system.

     

/

返回文章
返回
<span id="fpn9h"><noframes id="fpn9h"><span id="fpn9h"></span>
<span id="fpn9h"><noframes id="fpn9h">
<th id="fpn9h"></th>
<strike id="fpn9h"><noframes id="fpn9h"><strike id="fpn9h"></strike>
<th id="fpn9h"><noframes id="fpn9h">
<span id="fpn9h"><video id="fpn9h"></video></span>
<ruby id="fpn9h"></ruby>
<strike id="fpn9h"><noframes id="fpn9h"><span id="fpn9h"></span>
www.77susu.com