Effects of temperatures and carbon dioxide nanobubbles on superior electric storage for anodically oxidized films of AlY10 amorphous alloy
Effects of temperatures and carbon dioxide nanobubbles on superior electric storage for anodically oxidized films of AlY10 amorphous alloy
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DOI：
10.1063/1.5102082
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发表时间：
2019-09-01
期刊：
影响因子：
1.6
通讯作者：
Konno, K.
中科院分区：
文献类型：
--
作者：
Fukuhara, Mikio;Kuroda, Tomoyuki;Konno, K.
研究了温度和纳米气泡(NBS)对AlY10非晶态合金阳极氧化膜的储电性能的影响。实验温度范围为275~298K。用二氧化碳NBS溶液在278K时得到的AAO样品具有较长的放电时间。放电时间随充电时间的增加而增加，在S充电后达到饱和，随着温度的升高，结构由大容量的简单串联电容器转变为小容量、大电阻的简单并联电容器。NBS在水中的稳定性可以用质子化多面体水团簇中的封闭作用来解释。团簇与氧NBS的崩塌导致形成OH-自由基并由此洗脱Al，而一氧化碳NBS阻止OH-自由基的形成，促进形成AlO6团簇所需的缓慢氧化。
The effects of temperature and nanometer-sized bubbles (NBs) on a superior electric storage capacitor for anodically oxidized films of AlY10 amorphous alloys were determined at temperatures ranging from 275 to 298 K in 0.4 M H2SO4 solutions with NBs of ozone, oxygen, and carbon dioxide. The AAO specimen obtained by solution with carbon dioxide NBs at 278 K showed longer discharging time. The discharging time increases with increasing charging time and then saturates after around 70 s. The increment in temperature makes the structure from simple series capacitor with large capacitance to simple parallel capacitor with lower capacitance and larger resistance. The stability of NBs in water could be explained by enclosure in protonated polyhedral water clusters. The collapse of clusters with oxygen NBs result in the formation of OH- radicals and its resulting elution of Al, while carbon oxide NBs prevent the formation of OH- radicals, promoting sluggish oxidation that is required for the formation of AlO6 clusters.