电解电容器铝箔纯交流腐蚀工艺影响因素的研究

对电解电容器铝箔交流腐蚀体系中各影响因素的研究结果表明，在电流密度为０．５Ａ／ｃｍ２，温度为４７±２℃；控制腐蚀液中Ａｌ（３＋）含量及适量添加表面保护剂和辅助添加剂的条件下，可获得最大比电容。通过循环伏安曲线测试，探讨了各因素影响腐蚀的机理及相互关系。     

完善立式电解槽电解精炼银的技术工艺

叙述立式银电解精炼的技术改进：①银电解中的残极处理方法，②电解银粉的出槽，③硝酸银的制备与废液的处理方法，④溶液循环系统的设计。     

电容器用铌粉和钽粉制备技术的进展

综述了铌粉和钽粉的现行生产工艺及几种新的还原方法，介绍了金属热还原反应中的电化学反应机理。钽粉的现行生产工艺几乎都用亨特法，铌粉则大部分采用铝热还原法生产。通过对亨特法还原条件、稀释剂组成等各种工艺参数的改进，已经可以制备纯度高、形态可控的金属钽粉。铌粉新还原方法的研究主要包括金属预成形热还原法、镁等蒸气还原预成形氧化物粉末的方法、镁或钠的蒸气还原氯化物蒸气的气相还原法、以液氨为介质在低温液相中均相还原铌或钽的氯化物的方法、反应媒介熔盐在强搅拌条件下的液体镁热还原金属氧化物的方法等。     

Evaluation of Al and Some of Its Alloys as Anode Materials vs γ-MnO2 as Cathode Material and Ore Produced γ-MnO2 vs Zn Anode in KOH Solution

In this study electrochemical performance of Al and some of its alloys (Al-Zn, Al-Mg and Al-Mn) anodes vs MnO2 cathode were carried out in alkaline solution. The results show that the Al-Zn alloy anode has the best cell capacity among the other alloys. Cell capacity values go in the order Al-Zn＞Al-Mg＞Al＞Al-Mn. This result is probably related to the nature of passive films formed on the surface of the alloys which examined by scanning electron microscopy (SEM). SEM morphologies of Al and its alloys showed coarse grains of passive films formed on the surface of these anode materials while Al-Mn morphology shows a needle-like structure.Electrolytic manganese dioxide (EMD) produced by electrodepositing on platinum anode from liquor resulting from reduction of low grade pyrolusite ore (β-MnO2) by sulfur slag was characterized as cathode in alkaline Zn-MnO2 batteries. Ore produced sample (EMD1) was performed well in comparison with EMD standard (EMD2) (commercial battery grade electrolytic manganese dioxide, TOSOH-Hellas GH-S). SEM morphology of Zn anode after cell reaction was carried out and showed that Zn anode has fine grains of passive film on its surface.     

降低高纯铅中的Cu、Bi、Sn等杂质含量

本文叙述了用电解精炼法在制备高纯铅过程中，降低铜、铋、锡杂质含量的各种措施和试验结果，比较详细地介绍了用硫化法降低电解液中的铜、铋、锡杂质的新工艺。     

变化中的全球电解二氧化锰市场

在现今所有的锰化工产品中，电解二氧化锰已经成为最具重要意义的产品。文章简单介绍了电解二氧化锰的应用领域，对全球的电池和电解二氧化锰的市场进行了分析，并对世界和中国的电解二氧化锰市场走向和趋势进行了概括性总结。     

电池用EMD的晶粒度和物相组成

本文用D/max-rC型转靶×射线衍射仪和扫描电镜对不同产地EMD的晶型、物相及晶粒尺寸进行了测定和计算,并结合制成电池的放电性能数据进行了比较,给出了最佳晶粒尺寸范围和γ/β型二氧化锰含量比。     

电解系列停限电后严重冷行程的不停槽处理

本文阐述了大型预焙槽系列超长时间停限电后,在电解槽电解质全部凝固于槽底、槽温降至700℃~800℃的超低温状态下,采用一系列特殊方法,对系列电解槽成功启动恢复生产,未发生一台槽停槽、漏槽,为国内电解铝厂处理类似事故总结了经验,探索出一条可行的道路。     

Study of Electrical Discharge Machining Performance in Water-Based Working Fluid

In this study, the role of working fluid in electrical discharge machining (EDM) was investigated based on its electrical conductivity. The function of gas bubble in material removal process was studied by comparing the crater that formed in water discharge with that formed in air discharge. The mechanism of material removal for EDM in water-based working fluid was proposed by analyzing the discharge voltage. Experiments were conducted to learn the influence of discharge parameters and working fluid conductivity on the crater forming process. The detected discharge waveform demonstrated that the effect of electrolytic reaction in the discharge process could be controlled by changing the conductivity of the working fluid. This study shows that water-based working fluid has good application prospects in EDM machining.     

Electrochemical impedance spectroscopy analysis of V–I characteristics and a fast prediction model for PEM-based electrolytic air dehumidification

PEM-based electrolytic air dehumidification is innovative due to its high efficiency, compact size and cleanness. However, high polarization loss and severe performance degradation have been observed, especially at high applied voltages (>2.5 V). Understanding the V–I characteristics is critical to performance optimization. This study experimentally investigated the V–I characteristics and internal response of materials under various operating conditions, with in-situ Electrochemical Impedance Spectroscopy (EIS) methods. Real-time mass transfer, electrochemical polarization and reaction dynamics of PEM components during dehumidification were derived by EIS. Then, a fast prediction model was built to directly predict the dehumidification rate and attenuation without any iteration, suitable for online monitoring and adjustment. Compared to other models, this model can take a quick understanding of the impact of operating conditions on the material characteristics inside the PEM element. The deviations of current density, PEM proton conductivity and moisture removal were 3%, 11.2% and 15.3%, respectively, compared to experiment data. Results showed that when the applied voltage changed from 1.5 to 3.5 V, the high-frequency resistance of the PEM element increased from 1.69 to 2.69 Ω, and the PEM proton conductivity decreased by about 38 times. The sharp drop in PEM proton conductivity resulted in a current attenuation. With this model, requirements for key components of PEM dehumidification were also obtained. Analysis of the overpotential distribution showed that increasing the water retention and reducing the dependence of proton conductivity on water molecules of the PEM can effectively improve the performance. This research provides guidance for the performance optimization and material selection of PEM-based dehumidification.