Nickel carbide material, nickel carbide cathode capable of enhancing electricity generation and preparation method and application of nickel carbide cathode

A nickel carbide, cathode technology, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve problems such as poor catalytic effect, achieve aerobic reduction performance, low charge transfer internal resistance, and reduce the effect of charge transfer internal resistance

Active Publication Date: 2020-11-10
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Nickel carbide material, nickel carbide cathode capable of enhancing electricity generation and preparation method and application of nickel carbide cathode
  • Nickel carbide material, nickel carbide cathode capable of enhancing electricity generation and preparation method and application of nickel carbide cathode
  • Nickel carbide material, nickel carbide cathode capable of enhancing electricity generation and preparation method and application of nickel carbide cathode

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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 in 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 dry the dried The sample was placed in a vacuum tube furnace at 900°C for further heating 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 isop...

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Abstract

The invention relates to a nickel carbide material, a nickel carbide cathode capable of enhancing electricity generation and a preparation method and application of the nickel carbide cathode. The preparation method of the nickel carbide material comprises the following steps: S1, mixing and dissolving a nitrogen source, a nickel source and a carbon source, carrying out hydrothermal reaction at 150-180 DEG C, carrying out washing and drying to obtain a precursor; S2, calcining the precursor at the temperature of 800-1000 DEG C to obtain the nickel carbide material. The nickel carbide materialprovided by the invention has a large electrochemical active area, strong oxygen reduction performance and good electrochemical stability, and when the nickel carbide material is applied to a cathodecatalytic material, cathode electrochemical active sites can be increased, cathode oxygen reduction performance can be enhanced, and electricity generation capacity can be improved; the nickel carbidecathode provided by the invention has the advantages of strong 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 Applications(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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