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An additive type energy storage membrane and a preparing method thereof

An energy storage film and additive technology, which can be used in the manufacture of hybrid/electric double layer capacitors, electrolytic capacitors, electrical components, etc. It can solve the problems of limiting the output of stored charge, high internal resistance, and affecting the storage performance of the energy storage film.

Active Publication Date: 2015-04-29
苏州容电储能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the energy storage film is solid and has high internal resistance, the short-circuit discharge current and other performances are poor, which in turn affects the energy storage performance of the energy storage film and greatly limits the output of the stored charge.

Method used

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  • An additive type energy storage membrane and a preparing method thereof
  • An additive type energy storage membrane and a preparing method thereof
  • An additive type energy storage membrane and a preparing method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0038] Samples #2.1-#2.2 and a set of reference samples #1 were respectively prepared according to the method of the present invention (that is, no conductive particles were added, and the reference samples in other embodiments were also #1). The reference sample is an energy storage film without adding any conductive particles. The size of the energy storage film used is 7.0cm×7.0cm, the thickness is 1.0mm, and the weight is 10g. The electrode material used is flake graphite paper, and the doped conductive particles are graphite particles with an average particle size of 0.2 mm. The mass ratios of graphite powder in samples #2.1-2.2 are 5.0% and 15.0%, respectively.

[0039] Use the YOKOGAWA GS610 signal source measurement unit to measure the energy storage performance of samples #2.1-2.2 and reference sample #1 respectively. After charging for 2 minutes, as figure 2 As shown, the final obtained results are shown in Table 1:

[0040] Table 1

[0041]

[0042] As the amo...

Embodiment 2

[0044] Samples #3.1-#3.2 and a set of reference sample #1 (ie no conductive particles added) were prepared according to the method of the present invention. The reference sample is an energy storage film without adding any conductive particles. The size of the energy storage film used is 7.0cm×7.0cm, the thickness is 1.0mm, and the weight is 10g. The electrode material used is flake graphite paper, and the doped conductive particles are graphite particles with an average particle size of 0.2 mm. The mass ratio of graphite doping in samples #3.1-3.2 is 15.0%, and the selected graphite-containing particles average The particle sizes are 0.3mm and 0.15mm respectively.

[0045] Doped with the same mass ratio of graphite particles, the electrical storage performance of the sample increases with the decrease of the average particle size, and the highest average particle size is 0.15 mm. When the particle size is further reduced, the power storage performance begins to decline.

[...

Embodiment 3

[0051] Samples #4.1-4.2 were prepared respectively according to the method of the present invention, and the used energy storage films all had a size of 7.0cm×7.0cm, a thickness of 1.0mm, and a weight of 10g. The electrode material used is flake graphite paper, the doped conductive particles are copper powder and the average particle size distribution is 0.9, 0.15mm, and the corresponding mass ratios are 1.0% and 9.0%, respectively, as shown in Table 3.1:

[0052] chart 3.1

[0053]

[0054] Use the YOKOGAWA GS610 signal source measurement unit to measure the energy storage performance of samples #4.1-4.2 and the reference sample respectively. After charging for 2 minutes, as image 3 As shown, the final obtained results are shown in Table 3.2: Table 3.2

[0055]

[0056] After doping aluminum powder, the peak short-circuit current is about 1-3 times higher than that of the reference sample. As the particle size of the copper particles used becomes smaller, the effecti...

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Abstract

The invention relates to a preparing method of an additive type energy storage membrane. The method is characterized in that: the energy storage membrane comprises 60.0-99.5% by weight of polystyrene sulfonate and 0.5-40.0% by weight of an additive. The electrically conductive particle additive is doped in the energy storage membrane, and is uniformly distributed in the energy storage membrane, so that energy storage performance of the energy storage membrane is largely improved by local electric field enhancement effects, wherein the short-circuit current is increased from 4.4 mA / cm<2> to 25.0 mA / cm<2>.

Description

technical field [0001] The invention relates to an energy storage film, in particular to an additive type energy storage film and a preparation method thereof. Background technique [0002] The energy storage film is a new type of energy storage material that only appeared in 2011. It is a super polarizable material invented by the research team of the National University of Singapore. Its chemical composition is a water-soluble organic polymer polysalt. There are many nanometer-level ion channels in the energy storage membrane, and the diameter of the channels is generally several nanometers, and these channels are interconnected and spread throughout the entire energy storage membrane structure, forming a three-dimensional network distribution. Nano-ion channels have a high degree of hydration and electrical polarity, in which metal ions exhibit high mobility and electrical conductivity (room temperature conductivity up to 10 -3 S / cm). More importantly, the positive and ...

Claims

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Application Information

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IPC IPC(8): H01M2/14H01G11/84H01G11/00H01M50/403H01M50/417H01M50/443
CPCH01G11/52H01G11/84H01M50/431H01M50/403Y02E60/10
Inventor 谢贤宁林群刘颖丹严玲
Owner 苏州容电储能科技有限公司
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