Preparation method of dye-sensitized solar battery cobalt-nickel sulfide counter electrode

A solar cell and cobalt-nickel sulfide technology, which is applied in the field of electrode preparation, cobalt, and nickel sulfide preparation, can solve the problems of complex preparation process and inability to prepare a large area, and achieve simple preparation process, high mechanical strength, and good electrocatalytic activity Effect

Inactive Publication Date: 2016-06-29
CHINA THREE GORGES UNIV
View PDF3 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two NiCo 2 S 4 The performance of the counter electrode is good, but the preparation process required is more complicated, requiring electrophoretic deposition or high-temperature sintering in a protective atmosphere, and cannot be prepared in a large area

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of dye-sensitized solar battery cobalt-nickel sulfide counter electrode
  • Preparation method of dye-sensitized solar battery cobalt-nickel sulfide counter electrode
  • Preparation method of dye-sensitized solar battery cobalt-nickel sulfide counter electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Weigh 2.4mmol Ni(OAc) respectively 2 4H 2 O and 4.8 mmol CoCl 2 ·6H 2 O was put into 40 mL of deionized water, placed in a magnetic stirrer and stirred for 30 min to dissolve to prepare A solution. Weigh 24mmol NaOH into 40mL deionized water, place in a magnetic stirrer and stir to dissolve for 30min to prepare B solution. Under the condition of rapidly stirring solution B, slowly pour solution A into solution B, and continue stirring for 1 h after the addition. After that, transfer the mixed reaction suspension of A and B to a stainless steel reaction kettle with a polytetrafluoroethylene liner, seal it and put it in a hydrothermal furnace, slowly rise from room temperature to 160°C and react at 160°C for 10h . After the reaction, it was cooled to room temperature with the furnace and taken out, and the obtained brown-black cobalt-nickel precursor was centrifugally washed 3 times with deionized water.

[0023] Step 2: After washing, disperse it into 240mL...

Embodiment 2

[0027] Step 1: Weigh 2.4mmol Ni(OAc) respectively 2 4H 2 O and 4.8 mmol CoCl 2 ·6H 2 O was put into 40 mL of deionized water, placed in a magnetic stirrer and stirred for 30 min to dissolve to prepare A solution. Weigh 24mmol NaOH into 40mL deionized water, place in a magnetic stirrer and stir to dissolve for 30min to prepare B solution. Under the condition of rapidly stirring solution B, slowly pour solution A into solution B, and continue stirring for 1 h after the addition. Afterwards, transfer the mixed reaction suspension of A and B to a stainless steel reaction kettle with a polytetrafluoroethylene liner, seal it and put it in a hydrothermal furnace, slowly rise from room temperature to 160°C and react at 160°C for 20h . After the reaction, it was cooled to room temperature with the furnace and taken out, and the obtained brown-black cobalt-nickel precursor was centrifugally washed 3 times with deionized water.

[0028] Step 2: After washing, disperse it into 240mL...

Embodiment 3

[0037] Step 1: Weigh 2.4mmol Ni(OAc) respectively 2 4H 2 O and 4.8 mmol CoCl 2 ·6H 2 O was put into 40 mL of deionized water, placed in a magnetic stirrer and stirred for 30 min to dissolve to prepare A solution. Weigh 16mmolNaOH and 8mmolNa 2 CO 3 Put it into 40mL of deionized water, place it in a magnetic stirrer and stir and dissolve for 30min to prepare B solution. Under the condition of rapidly stirring solution B, slowly pour solution A into solution B, and continue stirring for 1 h after the addition. After that, transfer the mixed reaction suspension of A and B to a stainless steel reaction kettle with a polytetrafluoroethylene liner, seal it and put it in a hydrothermal furnace, slowly rise from room temperature to 160°C and react at 160°C for 10h . After the reaction, it was cooled to room temperature with the furnace and taken out, and the obtained brown-black cobalt-nickel precursor was centrifugally washed 3 times with deionized water.

[0038] Step 2: Aft...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for preparing a cobalt-nickel sulfide counter electrode. The steps include: first step, hydrothermally reacting cobalt salt, nickel salt and excess sodium hydroxide or sodium carbonate at 120-200°C to generate hydrogen Oxycobalt nickel or basic cobalt nickel carbonate; the second step, mix the hydroxide cobalt nickel or basic cobalt nickel carbonate with a certain concentration of sulfur source aqueous solution, and heat it at 140-230 ° C; the third step is to generate the sulfur Cobalt nickel is made into a slurry and coated on a conductive substrate, and dried at room temperature. The electrode prepared by the invention does not need to be sintered under vacuum or protective atmosphere, and the preparation process is simple; the prepared cobalt-nickel sulfide counter electrode has high mechanical strength and no shedding phenomenon; Better electrocatalytic activity; Dye-sensitized solar cells assembled with cobalt-nickel sulfide electrodes obtained higher photoelectric conversion efficiency than dye-sensitized solar cells assembled with pyrolyzed Pt electrodes.

Description

technical field [0001] The invention relates to the technical field of cobalt and nickel sulfide preparation and the field of electrode preparation. Background technique [0002] Transition metal sulfides such as Co-S, Ni-S, and Ni-Co-S have excellent electrical, optical, and magnetic properties, and can be widely used in solar energy conversion, electrocatalysis, and supercapacitors. In the field of fuel cell electrocatalysis, Ni-Co-S, as a bimetallic sulfide, has shown higher conductivity and better electrocatalysis than its corresponding monometallic sulfides (Co-S and Ni-S). active. [0003] The counter electrode of the photoelectrochemical solar cell plays a role in collecting and transporting electrons in the external circuit to the counter electrode / electrolyte interface, and by catalyzing the oxidation-reduction pair in the electrolyte (such as: I - / I 3 - ) undergoes a reduction reaction to provide electrons to the electrolyte. These two functions require high e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20
CPCY02E10/542H01G9/20H01G9/0029H01G9/042
Inventor 黄妞李文静项长华孙小华孙盼盼
Owner CHINA THREE GORGES UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap