Topic
Sodium hypophosphite
About: Sodium hypophosphite is a research topic. Over the lifetime, 1695 publications have been published within this topic receiving 15932 citations.
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Patent•
23 Apr 2014
TL;DR: In this paper, a preparation method of a graphene/copper composite material is described, which includes the following steps: step 1, weighing copper sulfate pentahydrate, nickel sulfate, citric acid and boric acid; step 2, placing the mixed solution A in a magnetic stirring water bath kettle for heating the mixed mixture A, then adding graphene oxide solution into the mixture B, stirring, and preparing B; step 3, adding sodium hypophosphite solution into B, and finally, performing an accelerated reaction and ultrasound dispersion treatment so as to obtain
Abstract: The invention discloses a preparation method of a graphene/copper composite material. The preparation method includes the following steps: step 1, weighing copper sulfate pentahydrate, nickel sulfate, citric acid and boric acid so as to prepare a mixed solution A, and stirring the mixed solution A; step 2, placing the mixed solution A in a magnetic stirring water bath kettle for heating the mixed solution A, then adding graphene oxide solution into the mixed solution A, stirring, and preparing a mixed solution B; step 3, adding sodium hypophosphite solution into the mixed solution B, stirring, and performing an accelerated reaction and ultrasound dispersion treatment so as to obtain a solution of the graphene/copper composite material which is evenly dispersed; step 4, performing repeated suction filtration on the solution by using a microfiltration membrane, repeatedly washing filter residues until PH (potential of hydrogen) value of the filter residues is neutral, performing vacuum drying, and performing reduction so as to obtain the composite graphene/copper composite material. The preparation method of the graphene/copper composite material is simple, convenient to operate, and low in cost, and has good application prospect.
6 citations
TL;DR: In this paper, a chain-like cobalt microod with length of 10-13μm was synthesized in water and ethanol mixed solution at 150°C for 20h.
6 citations
TL;DR: In this paper, the authors used β-cyclodextrin (β-CD) in the presence of citric acid (CA) as crosslinking agent and sodium hypophosphite (SHP) as catalyst using pad dry cure technique.
Abstract: Silk fabrics were treated by β-cyclodextrin (β-CD) in the presence of citric acid (CA) as crosslinking agent and sodium hypophosphite (SHP) as catalyst using pad dry cure technique. CA is expected ...
6 citations
Patent•
15 Mar 2017
TL;DR: In this paper, an integrated nickel-based porous porous nickel phosphide hydrogen evolution electrode was proposed for electrolytic hydrogen production, in particular to a preparation method of an integrated Nickel-Based porous nickel PHE.
Abstract: The invention relates to the technical field of electrolytic hydrogen production, in particular to a preparation method of an integrated nickel-based porous nickel phosphide hydrogen evolution electrode. The preparation method of the integrated nickel-based porous nickel phosphide hydrogen evolution electrode comprises the specific steps that firstly, deionized water is prepared, specifically, a mixed solution with the mass ratio of organic alcohols being 1:(0-100) is prepared; secondly, weak acid is added into the mixed solution obtained in the first step, so that a weak acid solution with the weak acid concentration being 0.01-2 mol/L is prepared; thirdly, a foamed nickel substrate is added into the weak acid solution prepared in the second step, and then the etching reaction is conducted at the temperature of 10-100 DEG C for 1-10 hours, so that a nickel-based porous nickel precursor is obtained; fourthly, the nickel-based porous nickel precursor is taken out, washed with the deionized water and then dried; and fifthly, the nickel-based porous nickel precursor treated in the fourth step and sodium hypophosphite are placed in the hydrogen and inert gas mixed atmosphere for phosphating treatment at the temperature of 250-400 DEG C, and thus the integrated nickel-based porous nickel phosphide electrode is obtained. By adoption of the solution, the problems that an existing phosphide hydrogen evolution catalyst has few hydrogen evolution active sites and is poor in stability are solved.
6 citations
Patent•
08 Jul 2015
TL;DR: In this paper, a preparation method for an electrode material used for a supercapacitor and the application of electrode material is described, where the preparation method comprises the steps that LiCoO2 and sodium hypophosphite are put in a tube furnace proportionally, the LiCo O2 and the sodium hypphosphite were roasted for 1 to 2 hours under an inert atmosphere and with the temperature ranging from 300 DEG C to 500 DEGC, and the electrode material was acquired when the LCoO 2 and the Sodium HypophosphITE are cooled;
Abstract: The invention discloses a preparation method for an electrode material used for a supercapacitor and the application of electrode material. The preparation method for the electrode material comprises the steps that LiCoO2 and sodium hypophosphite are put in a tube furnace proportionally, the LiCoO2 and the sodium hypophosphite are roasted for 1 to 2 hours under an inert atmosphere and with the temperature ranging from 300 DEG C to 500 DEG C, and the electrode material is acquired when the LiCoO2 and the sodium hypophosphite are cooled; phosphor doping LiCoO2 composite electrode material prepared through the preparation method is applied to the supercapacitor. The preparation method for the electrode material has the advantages that the raw material is cheap and easy to get, the synthetic process is simple and easy to realize, the product quality is stable, and the reception performance of the technology is good; phosphor doping LiCoO2 composite electrode material prepared through the preparation method has an excellent supercapacitor performance.
6 citations