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Nanometer metal or alloy composite material and preparation and usage thereof

A nano-metal and composite material technology, applied in the field of nano-metal or alloy composite materials, to achieve high ion conductivity, good cycle characteristics and safety, and the effect of inhibiting damage

Active Publication Date: 2005-03-16
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the electrode material failure caused by the easy peeling of the solid electrolyte membrane formed in the prior art, the addition of additives will easily cause the kinetic behavior and high current performance of the electrode material to deteriorate, increase the manufacturing cost of the battery, and limit the operating temperature range of the battery And other defects, so as to provide a solid that can help to form a solid that will not deteriorate the kinetic behavior and high-current performance of the electrode material, will not increase the cost of battery manufacturing, limit the operating temperature range, and prevent the electrolyte from reducing and decomposing. Electrolyte membrane, and nano-metal or alloy / electrode active material composite materials that can solve the problem of electrode peeling and failure

Method used

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  • Nanometer metal or alloy composite material and preparation and usage thereof
  • Nanometer metal or alloy composite material and preparation and usage thereof
  • Nanometer metal or alloy composite material and preparation and usage thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1, using preparation method one (electroless plating method) to prepare Ag / graphitized mesophase carbon pellets (hereinafter referred to as GMCMB) composite material

[0048] Ag 0.1 / GMCMB 0.9 Preparation of the composite material: (1) Weigh 0.85 grams of silver nitrate and put it into 20 milliliters of anhydrous ethylene glycol to heat and dissolve to form solution 1; (2) Weigh 5 grams of graphitized mesophase carbon pellets and put them into 20 milliliters of ethylene glycol Alcohol and 1,3 propanediol (volume ratio: 1:1) in the mixed solution, stir and mix evenly, then heat to 160 degrees, add the solution 1 obtained in step 1, continue to reflux at 130 degrees for 14 hours and then cool naturally, during the heating and reflux process (3) the black suspension obtained in step 2 is filtered, first rinsed several times with ethylene glycol, and then rinsed with ethanol, and the black substance obtained is in a hollow oven at 100 degrees. After drying for ...

Embodiment 21

[0054] Example 21. Preparation of Al / natural graphite powder (hereinafter referred to as NG) composite material by preparation method three (chemical vapor deposition method)

[0055] al 0.2 / NG 0.8 Preparation of composite materials: In a chemical vapor deposition furnace, organic aluminum butylaluminum is used as a precursor, argon is used as a carrier gas, and natural graphite particles are used as a deposition substrate. The deposition temperature is 400 degrees and the deposition time is 15 minutes.

[0056] The nanometer metal or alloy / electrode active material composite material in this example is used in the method of Example 1 to prepare an electrode and assemble it into an experimental battery. Other materials, structures, assembly and testing methods in the battery are the same as those in Embodiment 2. Embodiment 22~30, use the same method as embodiment 21 to obtain nine kinds of different composite materials, the test conditions are the same as embodiment 1, lis...

Embodiment 31

[0057] Example 31. Preparation of Zn / carbon fiber (hereinafter referred to as CF) composite material by preparation method four (physical mixing method)

[0058] Zn 0.3 / CF 0.7 Preparation of composite material: directly mix 0.6 g of nano-zinc powder with 1.4 g of carbon fiber and set aside.

[0059] The nanometer metal or alloy / electrode active material composite material in this example was prepared by the same method as in Example 1 to prepare an electrode and assemble it into an experimental battery. Other materials, structures, assembly and testing methods in the battery are the same as those in Embodiment 2.

[0060] Embodiments 32 to 40, using the same method as in Example 31 to obtain nine different composite materials, the test conditions are the same as in Example 1, listed in Table 1

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Abstract

The invention relates to a compound material of millimicron metal or alloy / electrode active substance, comprising: millimicron metal or alloy and electrode active substance; millimicron metal or particle of alloy takes up 0.02~30 wt% of electrode active substance. The compound material is negative electrode active material of secondary lithium battery, cooperating with of metal oxide containing lithium, organic electrolyte solution, diaphragm, battery shell, and afflux agent and lead, to form secondary lithium battery. The electrode active substance of compound material supplies rigid skeleton structure and center for inlaying lithium, helps the formation of solid electrolyte layer on the surface of electrode active substance which has excellent ion conducting power; can avoid destruction to lamellar structure of graphite, stop unit of millimicron material effectively and increase periodicity and capacity of discharge and discharge with large current. The a secondary lithium battery has excellent abilities of circulation and safety, suitable for the place needing fairly high energy density.

Description

technical field [0001] The invention relates to a nano metal or alloy composite material, in particular to a composite material composed of a nano metal or alloy and an electrode active material as a surface solid electrolyte membrane forming accelerator, and a preparation method thereof, and its application in secondary lithium battery applications. technical background [0002] Concerns about the environment and thinking about energy shortages have led people to make new plans for the future of fuel vehicles. Electric vehicles powered by high-energy secondary lithium batteries and hybrid electric vehicles powered by both fuel and batteries have received more and more attention, which puts forward high power requirements for secondary lithium-ion batteries. Since the surface solid electrolyte film formed on the surface of the negative electrode material of the secondary lithium battery during the discharge process has a great influence on the performance of the electrode m...

Claims

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Application Information

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IPC IPC(8): H01M4/24H01M4/36H01M10/24H01M4/583
CPCY02E60/124Y02E60/10
Inventor 吴晓东陈立泉黄学杰
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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