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Ternary nickeliron phosphidenanosheet, preparation method thereof and application of electrolytic water

A technology of iron nanometer and nickel phosphide, applied in chemical instruments and methods, phosphide, nanotechnology, etc., can solve the problems that hinder large-scale application, limited active sites, low conductivity of LDHs, etc., and achieve low cost and crystallization Good performance and easy operation

Active Publication Date: 2018-05-29
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low conductivity and limited active sites of LDHs largely hinder their large-scale applications.

Method used

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  • Ternary nickeliron phosphidenanosheet, preparation method thereof and application of electrolytic water
  • Ternary nickeliron phosphidenanosheet, preparation method thereof and application of electrolytic water
  • Ternary nickeliron phosphidenanosheet, preparation method thereof and application of electrolytic water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Ni x Fe (1-x) P 2 Preparation of nanosheets

[0030] (1) The carbon cloth (CF) was ultrasonically cleaned with deionized water, ethanol, and acetone, and dried at 60 °C for 7 h. Immerse the cleaned CF into 40mL containing 0.654g nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O), 0.303g ferric nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 O) and 0.9g urea (CO(NH 2 ) 2 ), placed in a 50mL reactor and raised to 100°C for 6 hours, cooled to room temperature for washing after the reaction, and dried at 60°C to obtain Ni x Fe (1-x) (OH) 2 Nanosheets.

[0031] (2) P powder and Ni grown on carbon cloth x Fe (1-x) (OH) 2The nanosheets are respectively put into the small diameter tube (inner tube) and the large diameter tube (outer tube) of the quartz sleeve, and the large diameter tube and the small diameter tube are set so that the front and rear ends of the quartz sleeve are respectively placed in dual temperature zones In the upstream and downstream central temperatur...

Embodiment 2

[0044] Ni x Fe (1-x) P 2 Preparation of nanosheets

[0045] (1) The carbon cloth (CF) was ultrasonically cleaned with deionized water, ethanol, and acetone, and dried at 60 °C. Immerse the washed CF into 40mL containing 0.741g nickel nitrate hexahydrate Ni(NO 3 ) 2 ·6H 2 O, 0.182g iron nitrate nonahydrate Fe(NO 3 ) 3 9H 2 O and 0.9g urea (CO(NH 2 ) 2 ), placed in a 50mL reactor and raised to 100°C for 6 hours, cooled to room temperature for washing after the reaction, and dried at 60°C to obtain Ni x Fe (1-x) (OH) 2 Nanosheets.

[0046] (2) P powder and the prepared Ni x Fe (1-x) (OH) 2 The nanosheets were placed at both ends of the casing respectively, and placed in the upstream and downstream central temperature zones of the dual-temperature zone tubular reaction furnace. After the quartz tube was repeatedly cleaned with argon (Ar), the temperature of the upstream furnace was 400°C, and the temperature of the downstream furnace was raised to 400°C. As high a...

Embodiment 3

[0050] Ni x Fe (1-x) P 2 Preparation of nanosheets

[0051] (1) The carbon cloth (CF) was ultrasonically cleaned with deionized water, ethanol, and acetone, and dried at 60 °C. Immerse the washed CF into 40mL containing 0.567g nickel nitrate hexahydrate Ni(NO 3 ) 2 ·6H 2 O, 0.424g iron nitrate nonahydrate Fe (NO 3 ) 3 9H 2O and 0.9g urea (CO(NH 2 ) 2 ), placed in a 50mL reactor and raised to 100°C for 6 hours, cooled to room temperature for washing after the reaction, and dried at 60°C to obtain Ni x Fe (1-x) (OH) 2 Nanosheets.

[0052] (2) P powder and the prepared Ni x Fe (1-x) (OH) 2 The nanosheets were placed at both ends of the casing respectively, and placed in the upstream and downstream central temperature zones of the dual-temperature zone tubular reaction furnace. After the quartz tube was repeatedly cleaned with argon (Ar), the temperature of the upstream furnace was 400°C, and the temperature of the downstream furnace was raised to 400°C. As high a...

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Abstract

The invention provides a ternary nickeliron phosphidenanosheet.The nanosheet is a Ni<x>Fe<1-x>P<2> nanosheet grown on a substrate, x is greater than 0 and smaller than 1, the size of the nanosheet is500-1000nm, and the thickness is 10-30nm. The invention further provides a preparation method and application of the ternary nickeliron phosphidenanosheet. The nanosheethas good crystallinity, stablechemical property and high electrochemical activity. The nanosheet can be applied to electrochemical hydrogen evolution, and the overpotential is as low as 151mV when the current density reaches 10mA / cm<2>. The nanosheet can be applied to electrochemical oxygenevolution, and the overpotential is as low as 200mV when the current density reaches 10mA / cm<2>. The nanosheet has very good performance when being applied to electrochemical full-dissolved water, and the required impressed voltageis only 1.51V when the current density reaches 10mA / cm<2>.

Description

technical field [0001] The invention belongs to the field of electrodeless compound nanomaterials, and in particular relates to a nanomaterial for catalytic electrolysis of water and its preparation and application. Background technique [0002] The global energy crisis and the related environmental problems caused by fossil fuels are becoming more and more serious, and the more efficient use of renewable energy is becoming more and more important. The sustainable and environmentally friendly properties of hydrogen energy make it one of the most promising candidates for replacing fossil fuels. There are many ways to produce hydrogen, the most feasible method is electrochemical water splitting, which is produced by the hydrogen evolution reaction (HER, 2H + +2e - →H 2 ) and oxygen evolution reaction (OER, 2H 2 O→4e - +4H + +O 2 )consist of. However, both hydrogen evolution reaction and oxygen evolution reaction need to be under sufficiently large overpotential conditi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/08B82Y30/00B82Y40/00C25B1/04
CPCB82Y30/00B82Y40/00C01B25/08C01B25/088C01P2002/85C01P2004/03C01P2004/04C01P2006/40C25B1/04Y02E60/36
Inventor 何军刘凯莉王枫梅
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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