期刊论文

Yang, Fanming(ychufei@163.com)

中文

化工进展

1000-6613

2023

42

2

907-916

10.16085/j.issn.1000-6613.2022-0762

湖南省自然科学基金(2019JJ50026)；

本校为第一机构

利用乙醇和去离子水的混合溶液为溶剂，通过静态水热处理合成NiO，并对其在KOH电解液中的电化学行为与CO2吸附性能进行探究。采用X-射线衍射、X-射线光电子能谱、扫描电子显微镜、能量色散谱和N2吸附-脱附技术对NiO的物相、形貌、组成和孔结构进行分析。结果表明，NiO为颗粒状介孔材料，属于立方系晶体。NiO中，Ni以Ni2+、Ni3+形式存在。以NiO为活性材料、6 mol/L KOH为电解液组装三电极，可以产生赝电容。电流密度为1 A/g，电压窗口为0.1～0.5 V时，首次放电效率为93.5%，放电比容量为254.5 F/g，能量密度为5.7 Wh/kg，功率密度为200 W/kg。循环1000次，放电比容量仅降低3.93%。NiO表面的CO2吸...

NiO was synthesized by a static hydrothermal treatment in the mixed solvent of ethanol and deionized water. Besides, the electrochemical behavior of NiO in the KOH solution and CO2 adsorption performance were investigated. The phase, morphology, composition and pore structure of NiO were analyzed by X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, energy dispersive spectroscopy and N2 adsorption-desorption techniques. The results showed that NiO was granular mesoporous material and belonged to cubic crystal. In...