含铂中间层二氧化铅阳极的制备及其性能  

Lead Dioxide Anode with Platinum Intermediate Layer

作　　者：孙凤梅[1] 潘建跃 罗启富[3] 

机构地区：[1]南京信息职业技术学院微电子工程系,江苏南京210046 [2]镇江特种合金材料厂,江苏镇江212006 [3]江苏大学材料科学与工程学院,江苏镇江212013

出　　处：《材料保护》2006年第1期53-54,共2页Materials Protection

摘　　要：钛基二氧化铅阳极广泛应用于电解工业,但使用过程中会因钛基体的氧化和二氧化铅活性层内应力较大而失效。为解决这些问题,进行了含铂中间层二氧化铅阳极的研究。对钛基体预处理,在480℃下烧结制备铂中间层,然后电沉积二氧化铅活性层。通过SEM分析铂中间层和阳极活性层的表面形貌,XRD分析中间层的成分以及相结构,Tafel曲线分析二氧化铅阳极的电化学性能,加速寿命试验分析阳极的使用寿命。结果表明,含铂中间层二氧化铅的加速寿命大约是含αPbO2中间层二氧化铅阳极的加速寿命的3倍。Lead dioxide anode widely used in electrolysis is liable to fail due to the oxidation of the titanium matrix and the high internal stress of β-PbO_2 active layer. Thus a lead dioxide anode with platinum intermediate layer was developed in an attempt to get rid of the failure of the lead dioxide anode caused by the Ti-matrix oxidation and the internal stress of the active lead dioxide layer. The titled lead dioxide anode was prepared by electrodeposition of Ti β-PbO_2 on the platinum intermediate layer sintered on pre-treated Ti-matrix at 480 ℃. The morphology of the resulting anode was observed using a scanning electron microscope, while its phase composition was determined using an X-ray diffractometer. Moreover, the performance of the titled lead dioxide anode was investigated using Tafel curve, while its lifespan was evaluated making use of accelerated life test. It was found that the introduction of the platinum intermediate layer contributed to greatly increase the lifespan of the lead dioxide anode. Namely, the lead dioxide anode with the platinum intermediate layer had a lifespan three times as much as that of the same lead dioxide anode with a α-PbO_2 intermediate layer.

关 键 词：二氧化铅阳极 铂中间层 活性层 制备 性能 

分 类 号：O614.433[理学—无机化学]