期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 115, 期 39, 页码 19445-19454出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp206379h
关键词
-
资金
- National Research Foundation of Korea [과C6A1907] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Hierarchical microspheres composed of wrinkled alpha-Ni(OH)(2) nanosheets were synthesized from an aqueous solution containing nickel salts, hexamethylenetetramine, 1-butanol, and dodecyl sulfate. The exchange of intercalated dodecyl sulfate anions within the microspheres by smaller anions (Cl-, NO3-, OAc-, and SO42-) resulted in retention of morphology. A possible growth mechanism is proposed based on the observation of the effects the parameter variation (different nickel and hydroxide sources, several alcohols, with and without dodecyl sulfate as well as 1-butanol) had on rnicrosphere formation. Electrochemical and capacitive properties of the anion-exchanged microspheres were studied by cyclic voltammetry and galvanostatic charging-discharging. Interestingly, the specific capacitance was determined by size of the intercalated anions and not by the basal spacing; for example, the largest anion, SO42-, gave the lowest specific capacitance, whereas the smallest anion, Cl-, gave the highest specific capacitance. Our data support the notion that larger anions impede the mobility of OH- ions toward the surface of Ni(OH)(2) sheets to a greater extent than smaller ions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据