NiO morphology dependent optical and electrochemical properties

被引：42

作者：

Carbone, Marilena ^{[1
]}

Bauer, Elvira Maria ^{[2
]}

Micheli, Laura ^{[1
]}

Missori, Mauro ^{[3
]}

机构：

[1] Univ Roma Tor Vergata, Dept Chem Sci & Technol, Via Ric Sci 1, I-00133 Rome, Italy

[2] ISM CNR, RM 1,Via Salaria Km 29-3, I-00015 Monterotondo, Italy

[3] CNR, Ist Sistemi Complessi, Unit Sapienza, Piazzale Aldo Moro 5, I-00185 Rome, Italy

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2017年 / 532卷

关键词：

NiO nanoparticles; Morphology; Electrochemical properties; Optical properties; LITHIUM-ION BATTERIES; HYDROTHERMAL SYNTHESIS; NANOPARTICLES; SUPERCAPACITORS; PARTICLES; FILMS;

D O I：

10.1016/j.colsurfa.2017.05.046

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, NiO nanoparticles were prepared by hydrothermal synthesis of Ni(OH)(2) precursors using different alkalis (NH3 and NaOH) followed by a calcination at different temperatures (400 degrees C and 600 degrees C) and characterized by XRD and SEM. Their electrochemical and optical properties were probed by cyclic voltammetry and reflectance spectroscopy and related to the structural and morphological properties. It was found that the smallest peak-to-peak separations and band gaps attain to the NiO nanoparticles prepared at 400 degrees C, which are smaller and more porous. The preparations at 600 degrees C correspond to larger nanoparticles, with a larger size distribution and in one case (preparation with NaOH) a compact structure. The associated band gaps are larger and the electrochemical performances worse.

引用

页码：178 / 182

页数：5

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