RGO-CNTs杂化材料改性RuO_(2)-IrO_(2)-SnO_(2)/Ti阳极的性能研究  

Performance of RGO-CNTs Hybrid Material Modified RuO_(2)-IrO_(2)-SnO_(2)/Ti Anode

作　　者：赵菲[1] 王东伟 郭泉忠[2] 汪川[2] ZHAO Fei;WANG Dongwei;GUO Quanzhong;WANG Chuan(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Liaoning Province,Liaoning Key Laboratory of Material Environmental Corrosion and Evaluation,National Field Scientific Observation and Research Station of Soil and Atmospheric Environmental Material Corrosion in Shenyang,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110017,China)

机构地区：[1]太原科技大学材料科学与工程学院,太原030024 [2]中国科学院金属研究所,辽宁沈阳土壤大气环境材料腐蚀国家野外科学观测研究站辽宁省材料环境腐蚀与评价重点实验室,沈阳110017

出　　处：《中国腐蚀与防护学报》2025年第3期787-794,共8页Journal of Chinese Society For Corrosion and Protection

基　　金：国家重点研发计划(2021YFC2803102);沈阳市自然科学基金专项(自由探索类)(23503605)。

摘　　要：探讨了还原氧化石墨烯-碳纳米管(RGO-CNTs)杂化材料掺杂对RuO_(2)-IrO_(2)-SnO_(2)/Ti阳极电化学性能的影响。利用SEM、EDS、XRD和电化学等手段,对不同热分解温度下掺杂RGO-CNTs的RuO_(2)-IrO_(2)-SnO_(2)/Ti阳极的表面形貌、物相组成、电催化活性以及强化电解寿命进行了表征。结果表明,在前驱体中均匀分散的杂化RGO-CNTs,热分解过程中仍以部分单质状态存在,热分解温度越高,RGO-CNTs杂化材料在涂层中的含量越少。掺杂RGO-CNTs可以缓解涂层内因高温产生的热应力,改善阳极表面较大的热裂纹形貌,显著降低裂纹缺陷数量和缩小尺寸。同时,随着热分解温度的提高,RGO-CNTs杂化材料促进了活性RuO_(2)、IrO_(2)晶粒的析出,提高了涂层中Ru、Ir的含量。掺杂RGO-CNTs的阳极强化电解寿命提高了10%~30%,伏安电量提高了18.95%~26.57%。因此,RGO-CNTs杂化材料提升了金属氧化物阳极的抗腐蚀性能和电催化活性,延长了阳极的服役寿命。By incorporation of reduced graphene oxide-carbon nanotubes(RGO-CNTs)in the oxide mixture RuO_(2)-IrO_(2)-SnO_(2) to prepare RGO-CNTs doped RuO_(2)-IrO_(2)-SnO_(2)/Ti anode via multiple coating-calcination process.Then the surface morphology,structure,phase composition,and electrocatalytic activity of the anodes prepared at different calcination temperature were characterized by means of SEM,EDS,XRD,and electrochemical techniques,accordingly their electrolysis lifetime enhancement were also assessed.The results demonstrate that uniformly dispersed hybrid RGO-CNTs in the precursors still remain partially as elemental form in the acquired calcinates,with the increasing calcination temperature,the RGO-CNTs amount in the calcinates decreases.The doped RGO-CNTs can alleviate the thermal stress generated within the coating at high temperatures,improving the surface morphology of the anode with fewer and smaller thermal crack defects.Moreover,with the increasing calcination temperature,the doped RGO-CNTs may facilitate the precipitation of active RuO_(2) and IrO_(2) grains,enhancing the content of Ru and Ir in the coating,thereby enhance the electrolysis lifetime by 10%-30%,and voltammetric charge by 18.95%-26.57%.Consequently,the doped RGO-CNTs hybrid material can enhance the corrosion resistance and electrocatalytic activity of the metal oxide anode,therefore prolong its service life.

关 键 词：钛阳极 碳杂化材料 RGO CNTS 金属氧化物 

分 类 号：TG174.4[金属学及工艺—金属表面处理]