A Facile Chemical Precipitation Method for the Synthesis of Nd(OH)3 and La(OH)3 Nanopowders and their Supercapacitor Performances

被引：47

作者：

Arunachalam, Subasri ^{[1
,2
]}

Kirubasankar, Balakrishnan ^{[1
]}

Nagarajan, Erumaipatty Rajagounder ^{[2
]}

Vellasamy, Devadoss ^{[2
]}

Angaiah, Subramania ^{[1
]}

机构：

[1] Pondicherry Univ, Electromat Res Lab, Ctr Nanosci & Technol, Pondicherry 605014, India

[2] Kalasalingam Univ, Dept Chem, Krishnankovil 626126, India

来源：

CHEMISTRYSELECT | 2018年 / 3卷 / 45期

关键词：

Asymmetric supercapacitor; Lanthanum hydroxide; Neodymium hydroxide; Precipitation method; Rare-earth hydroxide; ELECTRODE MATERIAL; ELECTROCHEMICAL PERFORMANCE; GRAPHENE NANOSHEETS; RATE CAPABILITY; THIN-FILM; CAPACITANCE; NANOHYBRID; NANOFIBERS; OXIDE; COMPOSITE;

D O I：

10.1002/slct.201803151

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A facile chemical precipitation method is used to prepare both lanthanum hydroxide [La(OH)(3)] and neodymium hydroxide [Nd(OH)(3)] nanopowders in an ambient temperature without the addition of any surfactants. Both rare-earth hydroxides nanopowders are characterized by X-ray diffraction and FE-SEM analysis. The supercapacitor performances of La(OH)(3) and Nd(OH)(3) electrodes are studied by cyclic voltammetry, electrochemical AC-impedance and galvanostatic charge-discharge studies. It revealed that Nd(OH)(3) electrode possesses a high specific capacitance (C-sp) than La(OH)(3) electrode. Hence, an asymmetric supercapacitor device is fabricated and denoted as Nd(OH)(3)parallel to AC in 6 M KOH as the electrolyte soaked in the electrospun poly(vinylidene fluoride) membrane as the separator, which exhibited an energy density of 18.8 Wh kg(-1) at a power density of 796 W kg(-1).

引用

页码：12719 / 12724

页数：6

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