Fabrication and Characterization of a PbO2-TiN Composite Electrode by Co-Deposition Method
Fabrication and Characterization of a PbO2-TiN Composite Electrode by Co-Deposition Method
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共沉积法 PbO2-TiN 复合电极的制备和表征
DOI：
10.1149/2.0261610jes
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发表时间：
2016
影响因子：
3.9
通讯作者：
Yan Wei
中科院分区：
文献类型：
--
作者：
Li Xiaoliang;Xu Hao;Yan Wei
采用共沉积法制备了高活性、高稳定性的PbO2电极，并通过共沉积法制备了TiN颗粒。用扫描电子显微镜(SEM)、晶体结构(XRD)、化学状态(XPS)、电化学性能(CV和EIS)和稳定性(加速寿命试验)对其进行了表征。结果表明，TiN掺杂能明显改善电极表面形貌，提高电极电流响应，降低电极阻抗。在电化学氧化过程中，PbO2-0.5TiN电极对酸性红G和亚甲基蓝的降解性能最好(最高的去除效率、最低的能耗和最小的铅溶解)。PbO_2-0.5TiN电极的羟基氧吸附比例为78.75%，高于PbO_2电极的68.95%。PbO2-0.5TiN电极的加速使用寿命为302 h，是PbO2电极(96 H)的3倍多。此外，还提出了PbO2-0.5TiN电极寿命提高的一种可能的失活机理。©作者(S)2016。由ECS出版。这是一篇开放获取文章，根据知识共享署名4.0许可证(CC by，http://creativecommons.org/licenses/by/4.0/)，)的条款分发，该许可证允许在任何介质中不受限制地重复使用作品，前提是正确引用原始作品。[DOI：10.1149/2.0261610jes]版权所有。
An excellent PbO2 electrode with high electrocatalytic activity and stability was successfully fabricated by doping TiN particles through co-deposition method (marked as PbO2-TiN). The morphology (SEM), crystalline structure (XRD), chemical state (XPS), electrochemical performances (CV and EIS) and stability (accelerated life test) were characterized. The results showed that TiN doping could obviously improve the surface morphology of the electrode, increase the electrode current response and reduce the electrode impedance. During the electrochemical oxidation process, the PbO2-0.5TiN electrode showed the best performance on degradation of Acid Red G and Methylene blue (the highest removal efficiency, the lowest energy consumption and minimum Pb dissolution). The proportion of adsorbed hydroxyl oxygen for PbO2-0.5TiN electrode was 78.75%, which was higher than that for PbO2 electrode (68.95%). The accelerated service lifetime of PbO2-0.5TiN electrode was 302 h, which was more than 3 times longer than that of PbO2 electrode (96 h). Furthermore, a likely deactivation mechanism for lifetime enhancement of PbO2-0.5TiN electrode was proposed. © The Author(s) 2016. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. [DOI: 10.1149/2.0261610jes] All rights reserved.
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