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Waterproof fibrous zn-co water-based battery and preparation method thereof

A fibrous, water-based technology, applied in the direction of microscopic fiber electrodes, small-sized batteries/battery packs, electrode manufacturing, etc., can solve the problems of poor cycle stability, low specific energy density, low specific capacitance, etc., and achieve good flexibility and tensile properties, avoiding safety accidents, and inhibiting the effects of excessive growth

Active Publication Date: 2020-01-31
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional zinc batteries mainly use Ni(OH) 2 Or NiO cathode material (Nano Lett, 2016, 16, 1794-1802), due to its disadvantages such as low specific capacitance, low specific energy density, and poor cycle stability, it cannot widely meet everyone's needs

Method used

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  • Waterproof fibrous zn-co water-based battery and preparation method thereof
  • Waterproof fibrous zn-co water-based battery and preparation method thereof
  • Waterproof fibrous zn-co water-based battery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Take 3cm of 1K carbon fiber and soak it for 0.5h in the order of concentrated hydrochloric acid, concentrated nitric acid, acetone, and absolute ethanol, then wash and dry with deionized water. Weigh 7.4 g of trisodium citrate and 2.87 g of zinc sulfate, stir and dissolve in 50 mL of deionized water solution, add dilute sulfuric acid to adjust the pH to 5-6. Three electrodes are used for constant pressure deposition. Saturated calomel and platinum tablets are used as reference electrode and counter electrode respectively. After depositing at -1.5V for 0.5h, remove the zinc@carbon fiber electrode, clean with deionized water, and dry to obtain Zn @CF Fiber Anode Material.

[0035] Take 100μm Ni wire 3cm, first ultrasonically clean it with absolute ethanol, dry it, and calcinate it in an air atmosphere at 200°C for 5 minutes to obtain Ni wire with a NiO layer on the surface. Take 0.06g cobalt nitrate hexahydrate and 0.02g ammonium fluoride respectively, stir and dissolve in ...

Embodiment 2

[0038] Take 3cm of 1K carbon fiber and soak it for 0.5h in the order of concentrated hydrochloric acid, concentrated nitric acid, acetone, and absolute ethanol, then wash and dry with deionized water. Weigh 3.7 g of trisodium citrate and 1.44 g of zinc sulfate, stir and dissolve in 50 mL of deionized water solution, add dilute sulfuric acid to adjust the pH to 5-6. Three electrodes are used for constant current deposition. Saturated calomel and platinum sheet are used as reference electrode and counter electrode respectively. After depositing at -100mA for 0.5h, remove the zinc@carbon fiber electrode, clean with deionized water, and dry to obtain Zn@ CF fiber anode material.

[0039] Take 100μm Ni wire 3cm, first ultrasonically clean it with absolute ethanol, dry it, and calcinate it in an air atmosphere at 200°C for 5 minutes to obtain Ni wire with a NiO layer on the surface. Take 0.06g cobalt nitrate hexahydrate and 0.02g ammonium fluoride respectively, stir and dissolve in 50...

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Abstract

The invention discloses a waterproof fibrous Zn-Co water-based battery, and also discloses a preparation method of the waterproof fibrous Zn-Co water-based battery, comprising: preparing sheet-shaped zinc-loaded carbon fibers; and preparing the obtained electrode The material is placed on a self-made wire winding machine, twisted and tightened to obtain the electrode material of zinc@carbon fiber; Ni@Co is synthesized by hydrothermal method 3 o 4 Electrode material: take two kinds of electrode materials, add electrolyte, put them in a heat-shrinkable tube and package them. Both ends of the tube are pre-sealed with absorbent cotton, and then adsorbed with polytetrafluoroethylene solution. After drying, a waterproof fibrous Zn‑ Co water battery. On the one hand, the present invention can suppress the excessive growth of zinc dendrites in the process of charging and discharging, and avoid the occurrence of safety accidents; on the other hand, the carbon fiber has good flexibility and tensile properties, meeting the needs of wearable electronic devices.

Description

Technical field [0001] The invention relates to a battery and a preparation method thereof, in particular to a waterproof fibrous Zn-Co water-based battery and a preparation method thereof, and belongs to the field of fibrous water-based zinc batteries. Background technique [0002] Recently, fibrous batteries with high energy density and high output voltage have received widespread attention in high-end wearable electronic devices, such as: fibrous Li-S batteries (Nano Energy, 2017, 33, 325–333), Li + Battery (Adv.Mater.2016,28,4524-4531), Na + Battery (Adv.Mater.2017,29,1603719) etc. With the rapid development of wearable electronic devices, the development of high-safety, low-cost fibrous battery technology has become the trend of contemporary social development. Metallic zinc, a metal anode material that is more stable than metallic sodium (or metal), has the advantages of long cycle life, large-scale production and application, and meets the current needs of people (Science,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/36H01M10/38H01M4/02H01M4/04H01M4/38H01M4/52H01M4/75H01M4/66H01M2/02H01M2/08H01M50/10H01M50/186
CPCH01M4/02H01M4/0416H01M4/0457H01M4/38H01M4/52H01M4/661H01M4/663H01M4/75H01M10/36H01M10/38H01M2004/021H01M2004/022H01M50/107H01M50/183Y02E60/10Y02P70/50
Inventor 王斌官群程建丽李永鹏周静雯李寅川王转培杨杰
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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