This paper presents a new method of surface modification on LaNi5 hydr ogen storage alloy. The hydrogen alloy was treated in the acid CuSO4 solution co ntaining HF. The effect of HF on surface state of alloy was studi...This paper presents a new method of surface modification on LaNi5 hydr ogen storage alloy. The hydrogen alloy was treated in the acid CuSO4 solution co ntaining HF. The effect of HF on surface state of alloy was studied and the elec trochemical properties of modified alloy were investigated. Electrochemical impe dance spectra (EIS) was also applied to analyze the resistance property of alloy electrode after modification. SEM and XRD results showed that HF had corrosive effect on hydrogen alloy, which help copper grain to precipitate on alloy surfac e. EIS analysis showed that modified alloy had lower contact resistance and elec trochemical polarization, which resulted in a higher conductivity and electroche mical activation. Electrochemical testing showed modified alloy had better activ ation behavior and excellent large current discharge ability. Thus it could well satisfy the requirement of the application as power sources on electric vehicle s.展开更多
对水培花卉中易产生绿藻问题的研究结果表明,1%C uSO 4抑藻效果最好,其次是0.1%C uSO 4、0.5%C uSO 4、活性炭2 g;活性炭3个处理的新根生长情况明显优于磁铁3个处理,而C uSO 4 3个处理几乎无水培根产生,叶片甚至出现枯死现象;C uSO 4 3...对水培花卉中易产生绿藻问题的研究结果表明,1%C uSO 4抑藻效果最好,其次是0.1%C uSO 4、0.5%C uSO 4、活性炭2 g;活性炭3个处理的新根生长情况明显优于磁铁3个处理,而C uSO 4 3个处理几乎无水培根产生,叶片甚至出现枯死现象;C uSO 4 3个处理营养液pH相对稳定,活性炭3个处理、磁铁3个处理pH值随时间经历了一个升高—降低—升高的过程。展开更多
文摘This paper presents a new method of surface modification on LaNi5 hydr ogen storage alloy. The hydrogen alloy was treated in the acid CuSO4 solution co ntaining HF. The effect of HF on surface state of alloy was studied and the elec trochemical properties of modified alloy were investigated. Electrochemical impe dance spectra (EIS) was also applied to analyze the resistance property of alloy electrode after modification. SEM and XRD results showed that HF had corrosive effect on hydrogen alloy, which help copper grain to precipitate on alloy surfac e. EIS analysis showed that modified alloy had lower contact resistance and elec trochemical polarization, which resulted in a higher conductivity and electroche mical activation. Electrochemical testing showed modified alloy had better activ ation behavior and excellent large current discharge ability. Thus it could well satisfy the requirement of the application as power sources on electric vehicle s.
文摘对水培花卉中易产生绿藻问题的研究结果表明,1%C uSO 4抑藻效果最好,其次是0.1%C uSO 4、0.5%C uSO 4、活性炭2 g;活性炭3个处理的新根生长情况明显优于磁铁3个处理,而C uSO 4 3个处理几乎无水培根产生,叶片甚至出现枯死现象;C uSO 4 3个处理营养液pH相对稳定,活性炭3个处理、磁铁3个处理pH值随时间经历了一个升高—降低—升高的过程。
