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A kind of nickel carbide material, nickel carbide cathode capable of enhancing electricity production and its preparation method and application

A nickel carbide and cathode technology, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve problems such as poor catalytic effect, achieve good electrochemical stability, stable operation, and strong oxygen reduction performance

Active Publication Date: 2021-10-22
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects or deficiencies in the existing microbial fuel cells that the catalytic effect of simple carbon materials is not good, and to provide a method for preparing nitrogen-doped nickel carbide materials

Method used

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  • A kind of nickel carbide material, nickel carbide cathode capable of enhancing electricity production and its preparation method and application
  • A kind of nickel carbide material, nickel carbide cathode capable of enhancing electricity production and its preparation method and application
  • A kind of nickel carbide material, nickel carbide cathode capable of enhancing electricity production and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] This embodiment provides a nickel carbide material, which is used as a catalytic material to prepare a nickel carbide cathode (nickel carbide-2), and the specific process is as follows.

[0085] (1) Preparation of nickel carbide material:

[0086] Mix the melamine solution containing 0.021mol / L, the formaldehyde solution of 0.012mol / L and the nickel acetate solution of 0.012mol / L in a volume ratio of 2:1:1, and form a uniform pink solution by stirring for 20min; the mixed solution After heating in a polytetrafluoroethylene reactor at 170°C for 16h, wash with absolute ethanol and ultrapure water three times to remove impurities, and then dry the sample in a 60°C drying oven for 25h; then the dried The sample was placed in a vacuum tube furnace at 800 °C for further heating for 2.2 h under the protection of nitrogen to obtain a nickel carbide material.

[0087] (2) Preparation of nickel carbide catalyst layer:

[0088] Mix ultrapure water, Nafion solution, and pure isop...

Embodiment 2

[0092] This embodiment provides a nickel carbide material, which is used as a catalytic material to prepare a nickel carbide cathode (nickel carbide-4). The specific process is as follows.

[0093] (1) Preparation of nickel carbide material:

[0094] Mix the melamine solution containing 0.025mol / L, the formaldehyde solution of 0.010mol / L and the nickel acetate solution of 0.008mol / L in a volume ratio of 1:1:0.9, and form a uniform pink solution by stirring for 10 minutes; the mixed solution After heating in a polytetrafluoroethylene reactor at 180°C for 18h, wash with absolute ethanol and ultrapure water three times to remove impurities, and then place the sample in a drying oven at 55°C for 20h; then dry the dried The sample was placed in a vacuum tube furnace at 1000°C and further heated for 2.0 h under nitrogen protection to obtain the desired sample.

[0095] (2) Preparation of nickel carbide catalyst layer:

[0096] Mix ultrapure water, Nafion solution, and pure isoprop...

Embodiment 3

[0100] This embodiment provides a nickel carbide material, which is used as a catalytic material to prepare a nickel carbide cathode (nickel carbide-1). The specific process is as follows.

[0101] (1) Preparation of nickel carbide material:

[0102] Mix the melamine solution containing 0.015mol / L, the formaldehyde solution of 0.015mol / L and the nickel acetate solution of 0.0135mol / L with a volume ratio of 1.5:1:0.8, and form a uniform pink solution by stirring for 15 minutes; the mixed solution After heating in a polytetrafluoroethylene reactor at 150°C for 20h, wash with absolute ethanol and ultrapure water three times to remove impurities, and then place the sample in a drying oven at 65°C for 30h; then the dried The sample was further heated in a vacuum tube furnace at 900°C for 1.8 h under nitrogen protection to obtain the desired sample.

[0103] (2) Preparation of nickel carbide catalyst layer:

[0104] Mix ultrapure water, Nafion solution, and pure isopropanol soluti...

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Abstract

The invention relates to a nickel carbide material, a nickel carbide cathode capable of enhancing electricity production, a preparation method and application thereof. The preparation method of the nickel carbide material comprises the following steps: S1: mix and dissolve nitrogen source, nickel source and carbon source, perform hydrothermal reaction at 150-180° C., wash, and dry to obtain a precursor; S2: prepare the precursor in The nickel carbide material is obtained by calcining at 800-1000°C. The nickel carbide material provided by the present invention has a large electrochemical active area, strong oxygen reduction performance and good electrochemical stability. When it is applied to the cathode catalytic material, it can increase the electrochemical active sites of the cathode and enhance the oxygen efficiency of the cathode. Reducing performance, improving electricity production capacity; the nickel carbide cathode provided by the invention has strong electrical conductivity, large electrochemical active area, and low charge transfer internal resistance.

Description

technical field [0001] The invention belongs to the field of microbial electrochemistry, and specifically relates to a nickel carbide material, a nickel carbide cathode capable of enhancing electricity production, and a preparation method and application thereof. Background technique [0002] The social, environmental, economic, and potential crises arising from the extraction, manufacture, and consumption of various fuels place an urgent need to explore renewable energy to solve serious global energy problems. As a renewable and emerging microbial electrochemical technology, microbial fuel cell (MFC) has attracted widespread attention from domestic and foreign scholars due to the generation of bioenergy and the simultaneous treatment of wastewater. While the organic medium is decomposed in the anode compartment, electron acceptors appear in the cathode, determining the power output of the MFC. In these media containing ferricyanide, permanganate, nitrate, etc., oxygen is c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M4/88H01M8/16
CPCH01M4/8825H01M4/90H01M8/16Y02E60/50
Inventor 李猛莫测辉李彦文蔡全英
Owner JINAN UNIVERSITY
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