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(LMO-NCM-AC)/(LTO-AC) hybrid battery capacitor and preparation method thereof

A technology of LTO-AC and hybrid batteries, which is applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitors, and hybrid capacitor electrodes. Single material performance, good cohesiveness, and the effect of improving the dispersion of slurry

Active Publication Date: 2016-03-16
NINGBO CRRC NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But LiMn 2 o 4 Due to the Jahn-Teller effect and manganese dissolution, the battery cycle life is short, the high temperature performance is poor, and the specific capacity is low. The general reversible capacity is only 110mAh / g
The layered nickel-cobalt-manganese ternary materials have higher capacity and good cycle performance, and the ternary layered Li[Ni-Co-Mn]O 2 (NCM) has high theoretical specific capacity, stable structure, good thermal stability, good cycle performance, high electronic conductivity, and low cost, but the rate performance needs to be improved

Method used

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  • (LMO-NCM-AC)/(LTO-AC) hybrid battery capacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Dissolve 83% of LMO-NCM (the mass ratio of LMO and NCM is 5:5), 4% of activated carbon, 4% of conductive carbon black, 2% of carbon nanotubes, and 7% of LA132 in pure water for Stir at a high speed for 2 hours at a stirring speed of 6000 r / min to prepare a positive electrode slurry. Then use the coating equipment to evenly coat the positive electrode slurry on both sides of the current collector aluminum foil, dry, roll and cut to obtain the positive electrode sheet, wherein the thickness of one side of the positive electrode material is 117 μm.

[0044]Dissolve 83% of LTO, 4% of activated carbon, 4% of conductive carbon black, 2% of carbon nanotubes, and 7% of LA132 in pure water, and perform high-speed stirring for 2 hours at a stirring speed of 6000r / min to make a negative electrode slurry. Then use the coating equipment to evenly coat the negative electrode slurry on both sides of the current collector aluminum foil, and after drying, rolling and cutting to obtain ...

Embodiment 2

[0047] Dissolve 80% LMO-NCM (the mass ratio of LMO and NCM is 3:7), 6% activated carbon, 4% conductive graphite, 3% carbon nanotubes, 2% LA132, 3.5% gelatin in pure In the water, high-speed stirring was performed for 1 hour at a stirring speed of 6000 r / min, and then 1.5% PAAS was added for high-speed stirring for 1 hour to prepare positive electrode slurry. Then use the coating equipment to evenly coat the positive electrode slurry on both sides of the current collector aluminum foil, dry, roll and cut to obtain the positive electrode sheet, wherein the thickness of one side of the positive electrode material is 117 μm.

[0048] Dissolve 80% of LTO, 6% of activated carbon, 4% of conductive graphite, 3% of carbon nanotubes, 2% of LA132, and 3.5% of gelatin in pure water, and carry out high-speed stirring for 1 hour at a stirring speed of 6000r / min , and then add 1.5% of PAAS and carry out high-speed stirring for 1 h to make negative electrode slurry. Then use the coating equi...

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Abstract

The invention relates to a (LMO-NCM-AC) / (LTO-AC) hybrid battery capacitor and a preparation method thereof. The hybrid battery capacitor comprises a shell, and an electrolyte and a battery cell in the shell, wherein the battery cell is formed by a cathode plate, a membrane and an anode plate which are overlapped together and assembled; the cathode plate comprises a current collector and a cathode material formed on the surface of the current collector; the cathode material includes the following components in percentage by weight: 4-6% of AC, 5-8% of binder, 3-10% of conductive agent and the balance of LMO-NCM. The preparation method comprises the steps of firstly preparing cathode slurry and anode slurry, then respectively putting the cathode slurry and the anode slurry on the current collector to form the cathode plate and the anode plate, then assembling the cathode plate and the anode plate to form the Z-shaped battery cell and drying, and at last packaging the battery cell, injecting the electrolyte, standing, and thereby forming the (LMO-NCM-AC) / (LTO-AC) hybrid battery capacitor which is high in capacity, long in cycle life, safe and cheap.

Description

technical field [0001] The invention relates to a battery capacitor and a preparation method thereof, in particular to a (LMO-NCM-AC) / (LTO-AC) hybrid battery capacitor and a preparation method thereof, belonging to the field of new energy storage devices. [0002] The meaning of following expression among the present invention is: [0003] LMO: LiMn 2 o 4 [0004] NCM: Li[Ni-Co-Mn]O 2 [0005] LTO: Li 4 Ti 5 o 12 [0006] AC: activated carbon Background technique [0007] Lithium-ion hybrid supercapacitors, that is, battery capacitors, have the dual characteristics of lithium-ion batteries and supercapacitors. It has higher energy density than conventional supercapacitors, higher power density than lithium-ion batteries, longer life, and higher safety. It is expected to be used in electric vehicles. , electrical equipment, military and aerospace facilities and other high-energy and high-power electronic products. [0008] Spinel Li 4 Ti 5 o 12 (LTO) has a theor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/06H01G11/30H01G11/32H01G11/46H01G11/50H01G11/84
CPCY02E60/13H01G11/06H01G11/30H01G11/32H01G11/46H01G11/50H01G11/84
Inventor 阮殿波李林艳傅冠生
Owner NINGBO CRRC NEW ENERGY TECH CO LTD
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