title: Preparation and capacitance property of MnO2-pillared Ni(2+)-Fe3+ layered double hydroxides nanocomposite.
abstract: A novel MnO(2)-pillared Ni(2+)-Fe(3+) layered double hydroxides nanocomposite has been successfully fabricated using an intercalation/reduction reaction followed by heating treatment. The structural evolution of the samples obtained at different stages has been characterized by XRD, TEM, XPS, IR and N(2) adsorption-desorption. The layered structure of MnO(2)-pillared Ni(2+)-Fe(3+) layered double hydroxides nanocomposite can be maintained at 300 °C, and the obtained material has a large surface area of 202 m(2) g(-1). Electrochemical studies indicate that the material obtained by heating at 200 °C exhibits an ideal capacitive behavior and good cycling property in 1 mol L(-1) Na(2)SO(4) aqueous solution, and the specific capacitance value was 190 F g(-1) at a scan rate of 5 mV s(-1).
authors.affiliation: Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Ministry of Education, Xi'an 710062, PR China.
authors.forename: Hongjuan
authors.initials: H
authors.lastname: Li
authors.forename: Gang
authors.initials: G
authors.lastname: Zhu
authors.forename: Zupei
authors.initials: Z
authors.lastname: Yang
authors.forename: Zenglin
authors.initials: Z
authors.lastname: Wang
authors.forename: Zong-Huai
authors.initials: ZH
authors.lastname: Liu