Double-carbon oxygen-carrying copper-cobalt sulfide spinel type carbon material as well as preparation method and application thereof

A spinel-type, copper sulfide technology, applied in chemical instruments and methods, carbon compounds, nanotechnology for materials and surface science, etc., can solve the problems that cannot completely replace noble metal catalysts, and achieve excellent dual-functional performance, Effects of high stability and cycle performance, excellent bifunctional properties

Active Publication Date: 2020-10-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the stability of the catalyst needs to be improved, it cannot completely replace the noble metal catalyst [Inorg Chem Front, 2016, 3(12): 1501-1509]

Method used

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  • Double-carbon oxygen-carrying copper-cobalt sulfide spinel type carbon material as well as preparation method and application thereof
  • Double-carbon oxygen-carrying copper-cobalt sulfide spinel type carbon material as well as preparation method and application thereof
  • Double-carbon oxygen-carrying copper-cobalt sulfide spinel type carbon material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a double carbon-supported copper cobalt oxysulfide spinel carbon material ((Cu, Co) 3 OS 3 @CNT-C 3 N 4 ) preparation method, the specific preparation steps are as follows:

[0037] Step 1: Put 5g of urea into a quartz bowl, place it in a muffle furnace, raise the temperature to 550°C at a rate of 2.5°C / min under air conditions, and keep it warm for 3 hours to prepare a light yellow C 3 N 4 spare;

[0038] Step 2: 0.582g Co(NO 3 ) 2 ·6H 2 O and 0.242g Cu(NO 3 ) 2 ·6H 2 O was mixed with 1mL ammonia water, 5mL ethanol and 30mL deionized water, then added 1g sodium sulfide, and ultrasonically dispersed for 30 minutes to obtain a mixed solution;

[0039] Step 3: Add 0.05g C 3 N 4 and 0.05g CNT are added in the polytetrafluoroethylene lining, then add the mixed solution that step 2 obtains in the polytetrafluoroethylene lining;

[0040] Step 4: Put the polytetrafluoroethylene lining into the hydrothermal reaction kettle, use an oven to he...

Embodiment 2

[0044] This embodiment provides a double carbon-supported copper cobalt oxysulfide spinel carbon material ((Cu, Co) 3 OS 3 @CNT-C 3 N 4 ) preparation method, the specific preparation steps are as follows:

[0045] Step 1: Put 5g of urea into a quartz bowl, place it in a muffle furnace, raise the temperature to 550°C at a rate of 2.5°C / min under air conditions, and keep it warm for 3 hours to prepare a light yellow C 3 N 4 spare;

[0046] Step 2: 0.582g Co(NO 3 ) 2 ·6H 2 O and 0.242g Cu(NO 3 ) 2 ·6H 2 O was mixed with 1mL of ammonia water, 5mL of ethanol and 30mL of deionized water, and then 1g of sulfur powder was added, and the mixed solution was obtained after ultrasonic dispersion for 30 minutes;

[0047] Step 3: Add 0.05g C 3 N 4 and 0.05g CNT are added in the polytetrafluoroethylene lining, then add the mixed solution that step 2 obtains in the polytetrafluoroethylene lining;

[0048] Step 4: Put the polytetrafluoroethylene lining into the hydrothermal react...

Embodiment 3

[0054] This embodiment provides a double carbon-supported copper cobalt oxysulfide spinel carbon material (CuCo 2 S 4 @C 3 N 4 -CNT) preparation method, concrete preparation steps are as follows:

[0055] Step 1: Put 5g of urea into a quartz bowl, place the quartz bowl in a muffle furnace, raise the temperature to 550°C at a rate of 2.5°C / min under air conditions, and keep it warm for 3 hours to prepare light yellow C 3 N 4 spare;

[0056] Step 2: 0.582g Co(NO 3 ) 2 ·6H 2 O and 0.242g Cu(NO 3 ) 2 ·6H 2 O was mixed with 1mL ammonia water, 5mL ethanol and 30mL deionized water, then added 1g sodium thiosulfate, and ultrasonically dispersed for 30 minutes to obtain a mixed solution;

[0057] Step 3: Add 0.05g C 3 N 4 and 0.05g CNT are added in the polytetrafluoroethylene lining, then add the mixed solution that step 2 obtains in the polytetrafluoroethylene lining;

[0058] Step 4: Put the polytetrafluoroethylene lining into the hydrothermal reaction kettle, use an ov...

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Abstract

The invention discloses a double-carbon oxygen-carrying copper-cobalt sulfide spinel type carbon material, a preparation method and application of the double-carbon oxygen-carrying copper-cobalt sulfide spinel type carbon material in preparation of a zinc-air battery cathode catalyst. The preparation method comprises the steps of synthesizing a copper-cobalt bimetallic heteroatom-doped carbon material by adopting a one-step hydrothermal method, namely, using a carbon source containing a nitrogen element, introducing a sulfur source, taking copper nitrate hexahydrate and cobalt nitrate hexahydrate as metal precursors, carrying out hydrothermal reaction, and carbonizing at high temperature to form a unique honeycomb structure. The double-carbon oxygen-carrying copper-cobalt sulfide spinel type carbon material has remarkable electrocatalytic activity and excellent conductivity, and due to the coupling effect of double metals and the synergistic effect of heteroatom co-doping, the finallyobtained double-carbon oxygen-carrying copper-cobalt sulfide spinel type carbon material can realize long-time and high-stability charging and discharging circulation when being used on a zinc-air battery.

Description

technical field [0001] The invention relates to the preparation and application of a double carbon-supported copper oxysulfide copper cobalt spinel-type carbon material, and belongs to the technical field of preparation and application of electrochemical oxidation-reduction dual-function catalysts. Background technique [0002] In response to the increasingly serious environmental pollution and energy shortage, electrochemical energy storage and conversion systems have been gradually developed and studied in clean energy such as solar energy, wind energy, and nuclear energy. In particular, zinc-air rechargeable batteries have attracted the attention of researchers from various countries due to their low operating temperature, high specific energy, environmental friendliness, and long life. In order to pursue more excellent oxygen reduction (OER) and oxygen evolution (ORR) performance, people usually use platinum carbon (Pt / C), ruthenium dioxide (RuO 2 ) and iridium dioxide ...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88H01M12/06C01G51/00C01B21/082C01B32/168B82Y30/00
CPCB82Y30/00C01B21/0605C01G51/006C01P2004/64C01P2004/80C01P2006/40C01B32/168H01M4/88H01M4/9083H01M12/06
Inventor 乔锦丽王旭彭芦苇徐能能王永霞郭佳宁娄文双李君
Owner DONGHUA UNIV
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