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A kind of integrated stretchable lithium-ion battery and its preparation method

A lithium-ion battery, battery technology, applied in battery electrodes, secondary batteries, electrode carriers/current collectors, etc., can solve the problems of limited application, large volume of LIB, etc., achieve excellent adhesion, ensure performance and structure, guarantee The effect of stretchability

Inactive Publication Date: 2021-05-18
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the volume of LIB is relatively large due to the three-dimensional arched structure, which limits its application in future electronics.
[0004] Despite the great efforts of many researchers in the study of stretchable LIBs, there is still huge room for researchers to develop fully stretchable LIBs

Method used

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  • A kind of integrated stretchable lithium-ion battery and its preparation method
  • A kind of integrated stretchable lithium-ion battery and its preparation method
  • A kind of integrated stretchable lithium-ion battery and its preparation method

Examples

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Embodiment 1

[0063] The invention provides an integrated stretchable lithium ion battery and a preparation method thereof.

[0064] Synthesis of coaxial Si@C Hybrid Fibers (Si@C Hybrid Fibers, abbreviated as Si@C HFs) materials:

[0065] 0.1 g of 10 nanometer Si NPs (nano-particles) and 0.6 g of poly(methyl methoxyethyl ester) (PMMA, weight average molecular weight M w =996,000) powder was dissolved in a mixture solution of DMF and acetone in a 1:1 wt. ratio, which was used as a core solution. 0.5 g of poly(acrylamide) (PAN, M w =150,000) was dissolved in 5 g of DMF, and this solution was used as the shell solution. The above two solutions were first treated by sonication for 30 minutes, followed by vigorous magnetic stirring for 12 hours. The core and shell solutions were transferred separately into a 5 mL plastic syringe. The needle of the syringe has an inner diameter of 0.6 mm and an outer diameter of 0.3 mm. During the coaxial electrospinning process, the voltage was 10kV to form...

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Abstract

The invention provides an integrated stretchable lithium-ion battery, the battery includes an electrolyte, an anode, a cathode and a separator, and the separator is sandwiched between the anode and the cathode; the material of the anode includes a coaxial A coaxial Si@C hybrid fiber synthesized by an electrospinning process, the hybrid fiber has a core-shell tubular structure, the core includes Si, and the shell includes C. Electrospinning is used to uniformly spray the electrode slurry on the stretchable current collector, so that the battery slurry and the current collector have an excellent adhesion, which can effectively reduce the problem of material shedding during the stretching process; coaxial spinning The carbon-coated silicon anode material is made of silk to form a tubular core-shell structure, which reduces the irreversible capacity attenuation caused by the volume expansion of traditional silicon anode materials and improves the mechanical properties of the material.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to an integrated stretchable lithium-ion battery and a preparation method thereof. Background technique [0002] Flexible electronics have attracted much attention due to their potential applications in several emerging fields, such as strain sensors, wearable electronics, and artificial electronic skin. Stretchable electronics are becoming increasingly important due to the growing demand for fully elastic electronics capable of withstanding high strains. Since highly reliable stretchable electronic devices should be stretchable in all their components, a key challenge in developing such devices is to create stretchable energy devices to power them. Lithium ion batteries (LIBs) are one of the most promising candidates to provide power sources for stretchable electronics due to the high energy density and good long-term stability of LIBs. However, several key obstacles exist in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/13H01M4/139H01M4/36H01M4/38H01M4/587H01M4/62H01M4/66H01M10/0525
CPCH01M4/13H01M4/139H01M4/364H01M4/386H01M4/587H01M4/62H01M4/661H01M4/666H01M10/0525H01M2004/028Y02E60/10
Inventor 王荣明王晓丹路瑶
Owner UNIV OF SCI & TECH BEIJING
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