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Optimization method of sulfide nanocrystals, Sn-S-Co nanocrystals and optimization product of Sn-S-Co nanocrystals

An optimization method, the technology of sn-s-co, applied in the nano field, can solve the problems of limited application and high cost, and achieve the effect of simple synthesis method, excellent performance and improved crystal morphology

Active Publication Date: 2021-01-29
NANJING XIAOZHUANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scarcity and high cost of precious metals limit their application

Method used

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  • Optimization method of sulfide nanocrystals, Sn-S-Co nanocrystals and optimization product of Sn-S-Co nanocrystals
  • Optimization method of sulfide nanocrystals, Sn-S-Co nanocrystals and optimization product of Sn-S-Co nanocrystals
  • Optimization method of sulfide nanocrystals, Sn-S-Co nanocrystals and optimization product of Sn-S-Co nanocrystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Thiourea (CS(NH 2 ) 2 ), SnCl 2 2H 2 O, CoCl 2 ·6H 2 O dissolves in H 2 In O, heat up the oil bath to 120°C until a crystal film appears, put it in an oven, and dry it below 50°C. Sn-S-Co-0 is obtained.

Embodiment 2

[0061] Obtain Sn-S-Co-0 according to the method in Example 1, then dissolve it in dodecylamine (DDA) solution, heat up the sand bath to 230°C, add TOP 3-10mL and keep it warm for 30min to obtain Sn-S-Co-containing product, the reaction ends. After the sand bath is naturally cooled to 48°C, add an appropriate amount of n-heptane and absolute ethanol to disperse, and centrifuge to separate the solid. The solid was washed to obtain a black product, which was used for analysis and characterization after vacuum drying overnight in a vacuum oven.

[0062] In this embodiment, products with different TOP addition amounts are marked with different numbers.

[0063] in:

[0064] When the amount of TOP added is 3mL, the product is labeled as Sn-S-Co-1;

[0065] When the amount of TOP added is 5mL, the product is labeled as Sn-S-Co-2;

[0066] When the amount of TOP added is 8mL, the product is marked as Sn-S-Co-3;

[0067] When the amount of TOP added was 10 mL, the product was labe...

Embodiment 3

[0072] In the three-electrode system, the electrochemical properties of the samples were tested by cyclic voltammetry and polarization curve method. The specific process is as follows:

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Abstract

The invention belongs to the field of nanometer, particularly belongs to the application of nanometer materials in renewable energy technologies, and more particularly relates to an optimization method of layered sulfide nanocrystals and an optimized Sn-S-Co nanocrystal composite material, and the crystal form of the sulfide nanocrystals can be remarkably improved by performing controllable phosphorization on the sulfide nanocrystals. Therefore, the OER performance of the material can be remarkably improved, and the OER application of the material serving as a catalyst in an efficient catalytic fuel cell is further improved. Through detection, the performance of the material is excellent and is superior to that of IrO2 sold in the market at present, and the material has important guiding significance for renewable energy technology development.

Description

technical field [0001] The invention belongs to the field of nanometers, in particular to the application of nanometer materials in renewable energy technology, and more specifically relates to an optimization method of sulfide nanocrystals, Sn-S-Co nanocrystals and optimized products thereof. Background technique [0002] In the past few years, as the energy crisis has intensified, we urgently need new clean fuels to replace fossil fuels. [0003] Water splitting has gradually attracted attention as a way to produce hydrogen fuel. Water oxidation, also known as the oxygen evolution reaction (OER), as an important half-reaction in the electrocatalytic water splitting process, plays a vital role in the electrochemical reactions that occur in different energy storage and conversion systems, complex The multi-step proton-coupled electron transport process, such as hydrogen-oxygen bond cleavage and hydrogen-oxygen bond formation, leads to the slow kinetic effect of OER. Theref...

Claims

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Application Information

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IPC IPC(8): C01G51/00B82Y40/00H01M4/90
CPCC01G51/006B82Y40/00H01M4/90H01M4/9041C01P2002/20C01P2004/04C01P2002/72C01P2006/40Y02E60/50Y02P20/133
Inventor 陈昌云刘光祥颜森林穆雪琴崔雨佳聂浩楠徐鼎天
Owner NANJING XIAOZHUANG UNIV
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