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Preparation method of Pr(OH)3 one-dimensional nano-rods

A nanorod and electroplating technology, applied in the field of Pr3 one-dimensional nanorod preparation, can solve the problem that the large-scale production of supercapacitor anode materials is limited to carbon-based materials, achieve excellent capacitance performance, increase specific surface area, and increase capacitance performance effect

Inactive Publication Date: 2016-12-21
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The preparation method of the present invention can overcome the problem that the large-scale production of supercapacitor negative electrode materials in the prior art is only limited to carbon-based materials

Method used

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  • Preparation method of Pr(OH)3 one-dimensional nano-rods
  • Preparation method of Pr(OH)3 one-dimensional nano-rods

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Pr(OH) 3 The synthesis of nanorods on titanium sheets was achieved by the galvanostatic method. Before the current loading by galvanostatic method, the titanium sheet (1.5 cm × 3 cm) was ultrasonically cleaned in deionized water, ethanol, acetone, and deionized water for 10 minutes respectively, and then dried with compressed air for later use. Dip the cleaned titanium sheet into a two-electrode system containing 20 ml of a precursor aqueous solution mixed with praseodymium nitrate and ammonium nitrate, which corresponds to 90 mg of praseodymium nitrate hexahydrate and 30 mg of ammonium nitrate. A titanium sheet was used as the working electrode and a platinum electrode was used as the counter electrode, and the two-electrode system was placed in an oil bath at 70 °C. After the system temperature stabilized, a negative 2.0 mA loading current was applied to the system and the reaction was kept for 2 h. After the reaction, the titanium sheet was taken out, and the obtai...

Embodiment 2~5

[0028] Based on the scheme of Example 1, by regulating and controlling different reaction conditions, the influence of Pr(OH) 3 growth, and its relationship is shown in Table 1.

[0029] Among them, Examples 2 and 3 show that the temperature factor has a great influence on the material preparation, Example 4 shows that the mixing ratio of the precursor solution affects the material preparation, and Example 5 shows that the reaction time factor will restrict the growth length of the material. Described embodiment 2~5 all can prepare Pr(OH) 3 material, but relatively speaking, the appearance is poor, the specific surface area is small, the reactive active sites are few, and the supercapacitive performance is not as good as that of Example 1.

[0030] Table 1. Pr(OH) 3 Growth regulation of nanorods

[0031]

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Abstract

The invention provides a preparation method of Pr(OH)3 one-dimensional nano-rods. The preparation method comprises the following steps: preparing a precursor solution, and generating the Pr(OH)3 one-dimensional nano-rods on the surface of a working electrode through a one-step constant current electrochemical plating technology, wherein the precursor solution is a praseodymium salt and ammonium salt mixed aqueous solution, the concentration of praseodymium salt in the precursor solution is 1-8 g / L, and a ratio of the praseodymium salt to ammonium salt is (1-7):1; and the electrochemical plating temperature is 60-80 DEG C, the electrochemical plating current is 1.5-2 mA, and the electrochemical plating time is 1-3 h. The preparation method has the advantages of low energy consumption, simplicity in operation, and easy realization of scale expansion, and the prepared Pr(OH)3 one-dimensional nano-rods can effectively store energy by means of the high specific surface area and the super capacitance performance of praseodymium hydroxide one-dimensional nano-rods, provides a very good material for present energy storage problem, and has great application prospect.

Description

technical field [0001] The present invention relates to the technical field of energy storage materials, more specifically, to a Pr(OH) 3 Preparation method of one-dimensional nanorods. Background technique [0002] As an important material basis for the development of human society and economy, energy issues have always been an important issue that plagues society. With the explosive growth of population and the rapid development of society, the various demands of human beings for energy are also increasing day by day. However, with the non-renewable and over-exploitation of traditional fossil energy, the existing energy structure mainly based on traditional fossil energy can no longer meet the various needs of society for energy in the long term. In addition, with the development of fossil energy, the greenhouse effect is becoming more and more serious, and the ecological environment is deteriorating. Pure and renewable green energy has become the focus of attention. A ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00H01G11/30H01G11/24
CPCH01G11/24H01G11/30C01P2004/16C01P2002/72C01P2004/03C01P2004/61C01P2006/12C01F17/206Y02E60/13
Inventor 卢锡洪郑得洲于明浩方萍萍童叶翔
Owner SUN YAT SEN UNIV
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