Low-temperature zinc ion battery

A zinc-ion battery, low-temperature technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of insufficient low-temperature performance of batteries, increased use costs, and additional equipment burden, and achieve excellent power performance, long cycle life, high Effects of specific capacity and energy density

Inactive Publication Date: 2018-09-25
FUDAN UNIV
View PDF7 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the external means adopted to address the defects of low-temperature performance of the battery mainly include heating the battery and creating a small constant temperature environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1

[0028] Under anhydrous and oxygen-free conditions, using ethyl acetate as a solvent, zinc trifluoromethanesulfonate is dissolved in ethyl acetate at a concentration of 2 mol / L to obtain the low-temperature electrolyte. Using pyrene-4,5,9,10-tetraketone (PTO) as the positive active material, it is prepared by mixing with conductive agent carbon black and binder polytetrafluoroethylene (PTFE) in a mass ratio of 6:3:1 The slurry is rolled out into a film and then dried. After cutting, it is pressed on a titanium mesh to obtain a positive electrode piece. A zinc ion button battery was assembled with a metal zinc sheet as the negative electrode. The assembled zinc-ion battery was charged and discharged at a rate of 0.1C on an electrochemical workstation, and the specific capacity was 352mAh g at room temperature of 25℃. -1 (calculated based on the mass of the positive active material), the specific capacity is 248 mAh g at low temperature -40 °C -1 , the capa...

Example Embodiment

[0029] Example 2

[0030] Under anhydrous and oxygen-free conditions, using ethyl acetate as a solvent, zinc trifluoromethanesulfonate is dissolved in ethyl acetate at a concentration of 2 mol / L to obtain the low-temperature electrolyte. Using polypyrene-4,5,9,10-tetraketone (PPTO) as the positive active material, it is prepared by mixing with conductive agent activated carbon and binder polyvinylidene fluoride (PVDF) in a mass ratio of 6:3:1 The slurry is rolled out into a film and then dried. After cutting, it is pressed on a titanium mesh to obtain a positive electrode piece. A zinc-ion button battery was assembled with metal zinc foil as the negative electrode. The assembled zinc-ion battery was charged and discharged at a rate of 0.1C on an electrochemical workstation, and the specific capacity was 190 mAh g at room temperature of 25 °C. -1 (calculated based on the mass of the positive active material), the specific capacity is 128 mAh g at low temperature -40 °C -1 ,...

Example Embodiment

[0031] Example 3

[0032] Under anhydrous and oxygen-free conditions, using ethyl acetate as a solvent, zinc sulfate (ZnSO 4 ) was dissolved in ethyl acetate at a concentration of 2 mol / L to obtain the low-temperature electrolyte. Using cup[4]-quinone (CAQ) as the positive active material, it was mixed with the conductive agent acetylene black and the binder carboxymethyl cellulose (CMC) in a mass ratio of 6:3:1 to make a slurry, rolled out After the film is formed, it is dried, and after being cut, it is pressed on a titanium mesh to obtain a positive electrode piece. A zinc-ion button battery was assembled with the zinc material deposited on the graphene substrate as the negative electrode. The assembled zinc-ion battery was charged and discharged at a rate of 0.1C on an electrochemical workstation, and the specific capacity was 305 mAh g at room temperature of 25 °C -1 (calculated based on the mass of the positive active material), the specific capacity is 210 mAh g at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Specific volumeaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of batteries and particularly relates to a low-temperature zinc ion battery, comprising a cathode, an anode, and low-temperature electrolyte. The cathode is made from organics containing carbonyl functional groups, such as quinones, embedded compounds that may reversely dis-embed Zn2+, Li+ and Na+, or Prussian blue derivatives. The anode comprises a metal zinc sheet, zinc foil, zinc powder, a powdery porous zinc electrode, zinc alloy, or a zinc-based material applied to/deposited on another conductive substrate. The low-temperature electrolyte usesethyl acetate and its derivatives, or quinones or their derivatives as solvents, uses an organic zinc salt or inorganic zinc salt as a solute, and has a concentration of 0.01-10 mol/L. The low-temperature zinc ion battery may allow reversible charging and discharging through cathodic enolization and anode zinc dissolution/precipitation mechanism, and still has high specific capacity, high energy density, long cycle life and excellent power performance at the extreme low temperature (-70 DEG C).

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a zinc ion battery. Background technique [0002] Facing the important problems of energy crisis and environmental pollution, the effective development and utilization of green and clean energy has become a crucial solution. However, renewable energy such as solar energy, wind energy, tidal energy and other new energy sources have discontinuous characteristics, and their effective use requires efficient and recyclable energy storage equipment, which can integrate discontinuous renewable energy into the power grid and energy infrastructure in electrification applications. The development and application of energy storage systems such as rechargeable secondary batteries and capacitors is an effective way to achieve this goal. At present, various types of secondary batteries have been developed, including commercial lead-acid batteries and lithium-ion batteries, whic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01M4/134H01M4/42H01M4/60H01M10/054H01M10/0569
CPCH01M4/134H01M4/42H01M4/60H01M10/054H01M10/0569H01M2300/0028Y02E60/10
Inventor 王永刚郭昭薇夏永姚
Owner FUDAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap