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N-Ni (Se) 2/CC self-supporting air electrode, preparation method thereof and flexible zinc-air battery

A self-supporting electrode and atmosphere technology, which is applied in the direction of fuel cells, battery electrodes, fuel cell half-cells and secondary battery-type half-cells, etc., can solve the problems of zinc-air battery cycle performance to be improved, large resistance, etc. Achieve the effect of improving catalytic activity, low resistance, improving conductivity and stability

Active Publication Date: 2020-06-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst is an oxide with high resistance, and the cycle performance of the zinc-air battery prepared by using the nickel-based catalyst needs to be improved.

Method used

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  • N-Ni (Se) 2/CC self-supporting air electrode, preparation method thereof and flexible zinc-air battery
  • N-Ni (Se) 2/CC self-supporting air electrode, preparation method thereof and flexible zinc-air battery
  • N-Ni (Se) 2/CC self-supporting air electrode, preparation method thereof and flexible zinc-air battery

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The N-Ni(Se) of this embodiment 2 The preparation method of / CC self-supporting air electrode comprises the steps:

[0036] 1) Put a 1cm*2cm carbon cloth into acetone, sonicate for 2 minutes, then take it out and place it in ethanol, sonicate it for 2 minutes, then put it into deionized water, sonicate it for 2 minutes, and take it out.

[0037] Mix 18mL ethanol and 9mL n-butanol evenly to obtain a mixed solvent, then add 1.5g nickel acetate tetrahydrate (Ni(CHCOO) 2 4H 2 O), then keep warm at 60°C and stir for 30min, then transfer to the reaction kettle, add the treated carbon cloth into it, carry out hydrothermal reaction at 60°C, the reaction time is 8h, and Ni(CHCOO) 2 / CC mixture.

[0038] 2) to step 1) the potassium persulfate (K) of 0.36mol is added in the mixed solution after the reaction 2 S 2 o 8) and 9mL of ammonia water, mixed evenly to obtain a blue mixed solution; then hydrothermally reacted at 180°C, and the reaction time was 12h. After the reactio...

Embodiment 2

[0043] The preparation method of the self-supporting air electrode of this embodiment includes the following steps:

[0044] 1) Put a 1cm*2cm carbon cloth into acetone, sonicate for 2 minutes, then take it out and place it in ethanol, sonicate it for 2 minutes, then put it into deionized water, sonicate it for 2 minutes, and take it out.

[0045] Mix 18mL ethanol and 9mL n-butanol evenly to obtain a mixed solvent, then add 1.5g nickel acetate tetrahydrate (Ni(CHCOO) 2 4H 2 O), then keep warm at 60°C and stir for 30min, then transfer to the reaction kettle, add the treated carbon cloth into it, carry out hydrothermal reaction at 60°C, the reaction time is 8h, and Ni(CHCOO) 2 / CC mixture.

[0046] 2) to step 1) the potassium persulfate (K) of 0.36mol is added in the mixed solution after the reaction 2 S 2 o 8 ) and 9mL of ammonia water (the ammonia water was stored at 0°C before use), and mixed evenly to obtain a blue mixed solution; then hydrothermally reacted at 180°C for...

Embodiment 3

[0051] The preparation method of the self-supporting air electrode of this embodiment includes the following steps:

[0052] 1) Put a 1cm*2cm carbon cloth into acetone, sonicate for 2 minutes, then take it out and place it in ethanol, sonicate it for 2 minutes, then put it into deionized water, sonicate it for 2 minutes, and take it out.

[0053] Mix 18mL ethanol and 9mL n-butanol evenly to obtain a mixed solvent, then add 1.5g nickel acetate tetrahydrate (Ni(CHCOO) 2 4H 2 O), then keep warm at 60°C and stir for 30min, then transfer to the reaction kettle, add the treated carbon cloth into it, carry out hydrothermal reaction at 60°C, the reaction time is 8h, and Ni(CHCOO) 2 / CC mixture.

[0054] 2) to step 1) the potassium persulfate (K) of 0.36mol is added in the mixed solution after the reaction 2 S 2 o 8 ) and 9mL of ammonia water (the ammonia water was stored at 0°C before use), and mixed evenly to obtain a blue mixed solution; then hydrothermally reacted at 180°C for...

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Abstract

The invention relates to an N-Ni (Se) 2 / CC self-supporting air electrode, a preparation method thereof and a flexible zinc-air battery, and belongs to the technical field of zinc-air batteries. The preparation method of the N-Ni (Se) 2 / CC self-supporting electrode comprises the following steps of carrying out heat preservation on a nickel selenide-loaded carbon matrix in an ammonia atmosphere at 300-500 DEG C for 1-3 hours to obtain the N-Ni (Se) 2 / CC self-supporting electrode, wherein the carbon matrix is any one of a carbon cloth, a carbon paper and a conductive metal foam. According to thepreparation method of the N-Ni (Se) 2 / CC self-supporting electrode, by carrying out high-temperature treatment on the nickel selenide-loaded carbon matrix in the ammonia atmosphere, the nickel selenide loaded on the carbon matrix is doped with a nitrogen element to generate a nitrogen-doped nickel selenide composite electrode material, the electronic structure of a metal center can be regulated and controlled by nitrogen doping, the intrinsic catalytic activity is improved, and the performance of the zinc-air battery adopting the self-supporting electrode is improved.

Description

technical field [0001] The present invention relates to a kind of N-Ni(Se) 2 The invention discloses a / CC self-supporting air electrode, a preparation method thereof, and a flexible zinc-air battery, belonging to the technical field of zinc-air batteries. Background technique [0002] Electrochemical batteries are devices that convert chemical energy into electrical energy through electrochemical reactions, such as metal-air batteries including zinc-air batteries and aluminum-air batteries. The metal-air battery is considered as a new type of fuel cell. The metal is equivalent to the fuel used as the negative electrode active material of the battery, and undergoes a redox reaction with oxygen in the air to realize the conversion of chemical energy and electrical energy. Compared with hydrogen, metals are easier to store, transport, recycle and safer. Moreover, metal-air fuel cells have many advantages that traditional hydrogen fuel cells do not have, such as abundant fuel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/86H01M8/0234H01M12/08B82Y30/00B82Y40/00
CPCH01M4/8882H01M4/8647H01M12/08H01M8/0234B82Y30/00B82Y40/00Y02E60/50
Inventor 彭生杰熊一星李林林
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS