Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries

Definitions

• the present invention relates to a lithium ion secondary battery, an electronic component activator for activating other electronic components, and a method for producing the same.
• the secondary battery for example, a lithium ion secondary battery, a nickel-cadmium secondary battery, and a nickel-hydrogen secondary battery are widely used. Normally, these batteries have a shortened discharge life over their service life. It is said that the standard of the number of times of charge and discharge is about 500 times.
• a positive electrode is formed from a layered structure of lithium cobaltate, lithium manganate, lithium nickelate, or the like, and a negative electrode is formed from a graphitized carbon material.
• the electrolyte an organic electrolyte in which a lithium salt is dissolved in an organic solvent is used.
• lithium becomes ions and dissolves in the electrolyte from the positive electrode and penetrates between the graphite layers of the negative electrode.
• ions such as lithium enter a compound having a layered or tunnel structure is called insertion.
• the opposite reaction occurs in discharge.
• the charge / discharge reaction of the lithium ion secondary battery is performed by the reciprocation of lithium between the positive electrode and the negative electrode.
• the performance degradation of the battery is caused by a part of the electrode being detached and mixed into the electrolyte due to the insertion.
• the electrode itself deteriorates, and various wastes (hereinafter referred to as “slag”) are mixed into the electrolyte.
• slag wastes
• the device is "distributed upstream in a battery regeneration device of a primary battery, a secondary battery, or a battery-containing device that converts energy of a chemical substance into electric energy by a chemical reaction.
• a battery or a battery storage device can be placed in an ion space where the ion flow emitted from the ceramic can contact while passing through the provided blower and the functional ceramic.
• the ceramic examples include those obtained by mixing, kneading, kneading, shaping, and sintering a basic material such as silica, zirconia, or silicon carbide with a metal oxide or a carbon fiber, or a material obtained by mixing these materials. It is described that this is used in the form of a paste, which is coated on a sheet-like woven fabric and baked.
• an object of the present invention is to provide an electronic component activator and an electronic component active sheet that can significantly improve the charge / discharge characteristics of a secondary battery. Disclosure of the invention
• the first characteristic configuration of the electronic component activator according to the present invention is that titanium oxide is 0.5 to 30 parts by weight with respect to 100 parts by weight of clay containing 30% or more of silicon dioxide and 15% or more of aluminum oxide. Parts by weight, 2 to 80 parts by weight of manganese oxide, and 0.2 to 10 parts by weight of iron oxide.
• the electronic component activator of the present invention can be expected to have an effect of realizing significant energy saving from a long-term viewpoint.
• a second characteristic configuration of the electronic component activator according to the present invention is the electronic component activator having the first characteristic configuration, further comprising zinc oxide 1 to 10 parts by weight with respect to the clay 100 parts by weight. Lignin in an amount of 5 to 30 parts by weight.
• the secondary battery by adding 1 to 10 parts by weight of zinc oxide and 5 to 30 parts by weight of lignin to the activator having the first characteristic configuration, the secondary battery can be used.
• the improvement effect is further enhanced.
• lignin is obtained by cleaving the bond at the ⁇ -position of the side chain of phenylpropane, which is a basic structure of lignin, and introducing a sulfone group into the bond.
• a third characteristic configuration of the electronic component activator according to the present invention is the electronic component activator having the first characteristic configuration, wherein the clay is 1 to 2% of iron oxide and 0.1 to 0.1% of titanium oxide. 8%, calcium oxide: 0.1 to 0.8%, magnesium oxide: 0.1 to 0.3%, potassium oxide: 2 to 3.5%, sodium oxide: 0.6 to 1.2% In that
• a fourth characteristic configuration of the electronic component activator according to the present invention is any one of the first to third aspects.
• An electronic component activator having a characteristic configuration is applied to a sheet-like material such as paper, for example, to constitute an electronic component activator sheet.
• an electronic component active sheet like this configuration it will be easy to attach it to various secondary batteries and other electronic components, for example, a lithium ion secondary battery of a mobile phone or a digital camera. Therefore, the charge / discharge characteristics of the various secondary batteries used can be improved very easily.
• the first characteristic means of the method for producing an electronic component activator according to the present invention comprises: 100 parts by weight of a clay containing 30% or more of silicon dioxide and 15% or more of aluminum oxide; 0.5 to 30 parts by weight of titanium oxide; 2 to 80 parts by weight of manganese, 0.2 to 10 parts by weight of iron oxide, 1 to 10 parts by weight of zinc oxide, 5 to 30 parts by weight of lignin are kneaded together with water, made into a lump and air-dried. It is charged and heated to 110 ° C or more, kept at the temperature for 4 hours, cooled to 200 ° C in the furnace after stopping the heating, and then taken out of the furnace and allowed to cool.
• the electronic component activator of the present invention can be obtained by kneading and hardening predetermined components.
• the product obtained is massive. When used, pulverize to a predetermined size as needed.
• a sheet-like material such as paper, it is crushed into powder, and various binders are added to apply to the sheet-like material.
• a second aspect of the method for producing an electronic component activator according to the present invention is the method for producing an electronic component activator according to the first aspect, wherein the clay is 1 to 2% of iron oxide and 0 to 0 of titanium oxide. 1 to 0.8%, calcium oxide 0:! To 0.8%, magnesium oxide 0.1 to 0.3%, potassium oxide 2 to 3.5%, sodium oxide 0.6 ⁇ : The point is to use one containing 1.2%.
• an electronic component activator having a higher improvement effect can be obtained by using a clay containing the above compound in a predetermined amount.
• FIG. 1 is a graph showing the effect of the electronic component activator according to the present invention
• FIG. 2 is a graph showing the effect of the electronic component activator according to the present invention
• FIG. 3 is a graph showing the effect of the electronic component activator according to the present invention
• FIG. 4 is a graph showing the effect of the electronic component activator according to the present invention
• FIG. 5 is a graph showing the effect of the present invention.
• FIG. 6 is a graph showing the effect of the electronic component activator according to the present invention
• FIG. 7 is a graph showing the effect of the electronic component activator according to the present invention. It is a photograph shown. BEST MODE FOR CARRYING OUT THE INVENTION
• the electronic component activator of the present invention generates a large amount of negative ions around it as described below. Although the effect of this negative ion is not yet clear, it is expected that the negative ion will exert effects such as activating the movement of the lithium ion and decomposing and removing the slag.
• the electronic component activator of the present invention significantly improves the charge / discharge characteristics of a secondary battery.
• Table 1 shows the components contained in the electronic component activator of the present invention.
• the electronic component activator of the present invention contains the most clay.
• the clay used contains at least 30% silicon dioxide and at least 15% aluminum oxide. Above all, those containing 60% or more of silicon dioxide seem to generate a large amount of negative ions.
• a predetermined amount of water is added to these materials and sufficiently kneaded. It is formed into an arbitrary shape and left for about a day to evaporate the water inside by natural drying. By performing this drying treatment sufficiently, crystallization during firing can be completed.
• the dried material is placed in an oxygen-free furnace using an inert gas such as nitrogen or argon and heated to 110 ° C. or higher (preferably 130 ° C. or higher).
• an inert gas such as nitrogen or argon
• the temperature is maintained for 4 hours. In this state, the organic matter is carbonized and the mass turns black.
• stop heating and cool to 200 ° C in the furnace After the cooling is completed, it is removed from the furnace and allowed to cool.
• the electronic component activator of the present invention is obtained.
• the electronic component activator becomes porous.
• lignin is obtained by cleaving the bond at the ⁇ -position of the side chain of phenylpropane, which is the basic structure of lignin, and introducing a sulfone group into it.
• the lignin which is an organic substance
• the lignin is reduced and calcined to be a carbide.
• the generation of negative ions The production seems to increase.
• various synthetic resins can be used in addition to lignin.
• iron oxide is 1-2%
• titanium oxide is 0.1-0.8%
• oxidizing power is 0.1-0.8%
• magnesium oxide is 0.1-0.3%.
• the composition contains 2 to 3.5% of potassium oxide and 0.6 to 1.2% of sodium oxide.
• Table 2 shows the results of measuring the amount of negative ions generated by the electronic component activator of the present invention.
• an electronic component activation sheet (Test No. 3 or Table 3 in Table 3) was used in which clay, titanium oxide, manganese oxide, and iron oxide were coated with an electronic component activator obtained by adding zinc oxide and lignin. The same as that used for NO.4) was used.
• the measurement was performed using a commercially available negative ion counter (Air Ion Counter manufactured by Alfa Love, USA). .
• the amount of negative ions in “normal air” was measured with the ion force center standing on a table in the room.
• the suction port of the ion counter is covered with a cylindrical active sheet coated with the electronic component activator, and the surrounding air is introduced from the suction port after passing through the cylindrical portion. The measurement was performed as follows.
• the amount of negative ions near the active sheet was 7000 to 8000 / cm 3 .
• the amount of negative ions in normal air was from 200 to 300 ions / cm 3 .
• the amount of negative ions in the vicinity of the active sheet was about 30 times that of ordinary air, and it was confirmed that the electronic component activator of the present invention generated a large amount of negative ions.
• the activator of the electronic component of the present invention itself generates a negative ion, and the ability of the activator itself does not decrease with use.
• it is significantly different from conventional activated carbon. That is, activated carbon loses its adsorption performance after adsorbing a predetermined amount of the substance to be adsorbed, but the electronic component activator of the present invention has substantially no service life.
• the electronic component activator obtained as described above can be applied to a battery case, a secondary battery itself, or the like if it is ground to a certain size.
• the powdered activator mixed with a binder examples include a sheet-like member such as paper, cloth, and non-woven fabric, and any material.
• the sheet-like member obtained in this manner is appropriately cut in accordance with the size of the secondary battery to be activated, and is fixed and placed close to the secondary battery using an adhesive tape or the like. .
• the discharge time of a lithium ion battery used for a mobile phone was measured.
• Table 3 shows the various conditions for the measurement.
• Each battery was charged uniformly for 2 hours and 30 minutes using the charger attached to each mobile phone. At this time, each charger indicated that it was fully charged.
• Test No. 1 indicates that the mixture of clay and (Titanium oxide, manganese oxide, iron oxide, zinc oxide, lignin).
• Test No. 2 a large amount of the above mixture was blended.
• Tests No. 3 and No. 4 were measured using electronic component activators of the same formulation.
• the mixing ratio of the above mixture is set between Test No. 1 and Test No. 2.
• the composition of the clay used at this time was as shown in Table 4.
• FIG. 1 to 4 The discharge measurement results corresponding to test Nos. 1 to 4 are shown in Figs. 1 to 4. Each figure shows the results of a discharge test performed without an electronic component active sheet and the results of repeated discharge tests performed after the electronic component active sheet was mounted.
• the voltage immediately after the start of discharge is about 4 V.
• the discharge life was improved in each case.
• the discharge time was 125 minutes, whereas when the third discharge was performed after the sheet was provided, the discharge time was 1 minute. 75 minutes, about 1.4 times the discharge time was obtained.
• used batteries had improved discharge times compared to new batteries. After mounting the sheet, charging and discharging were repeated a plurality of times, and the extension of the discharge time before and after mounting the sheet was calculated. As shown in Table 3, used batteries In the tests NO. 1 to NO. 3 used, the results were 1.26, 1.33, and 1.40 times, respectively. In contrast, in Test No. 4 using a new battery, the magnification was only 1.09. This can be presumed to be because the used battery has a larger amount of the slag, and the effect of removing the slag by the electronic component active sheet of the present invention is more clearly exhibited.
• the discharge time becomes longer as charge and discharge are repeated. Furthermore, the battery voltage after a predetermined discharge time has elapsed after the start of discharge tends to show a higher value as charge and discharge are repeated.
• the electronic component activator of the present invention clearly improves the performance of the secondary battery.
• the measurement was carried out using a used battery whose effect is liable to appear clearly as in the above test, and mounting the same electronic component active sheet used in the above NO.
• the discharge measurement results and the battery surface temperature measurement results are shown in FIGS. 5 and 6, respectively. This measurement was performed using a charge and discharge battery test system PFX2000 series manufactured by Kikusui Electronics Corporation.
• Each figure shows the results of the discharge test performed without the electronic component active sheet, and the results of the discharge test repeated 5 times and 10 times with the electronic component active sheet mounted. Also shown.
• the discharge life was improved similarly to the results shown in FIGS. 1 to 4, and was good even when the charge / discharge test was repeated 10 times.
• the overall discharge time shown in FIG. 5 is shorter than the results shown in FIGS. 1 to 4. This is due to the fact that the constant current (0.58 A) is forcibly overdischarged and measured according to the above test conditions, so that the discharge time of the entire battery is shortened. In terms of use conditions, the discharge time is about the same as in Figs. 1 to 4. It becomes.
• the surface temperature of the battery after the application of the active sheet for the electronic component during discharge is the same as the surface temperature of the battery when the active sheet is not applied That is, it is lower than the temperature.
• the surface temperature of the battery is increased by continuously repeating charge and discharge, but the surface temperature is decreased by applying an electronic component active sheet, and there is almost no change even when charge and discharge are repeated.
• the electronic component activator of the present invention generates a large amount of negative ions. Then, it is considered that the slag generated inside the secondary battery is removed by the negative ions, and, for example, the movement of lithium ions during discharging is smooth. As a result, the voltage drop of the secondary battery is suppressed, and the discharge time is extended. On the other hand, the movement of lithium ions between the electrodes is also performed during charging. That is, the use of the electronic component activator of the present invention can shorten the charging time of the secondary battery.
• the activator for electronic parts of the present invention can be used by applying it to a sheet-like material such as paper. Therefore, for example, it can be easily attached to various secondary batteries such as lithium ion secondary batteries for mobile phones and digital cameras, and the charge / discharge characteristics of the secondary batteries used can be improved very easily. Can be.
• the electronic component activator of the present invention which can improve the battery characteristics during use and charging of secondary batteries in this way, This will contribute to the achievement of significant energy savings.
• the electronic component activator of the present invention was applied to paper.
• a material that is applied to the surface of a secondary battery and may be used, or one in which the electronic component activator is mixed into a constituent member of the secondary battery itself may be used.
• it can be used by being applied to electrodes or a separator provided between the electrodes, or can be used by being mixed in an electrolyte.
• the electronic component activator of the present invention can exhibit a good slag removing effect, and thus is not limited to secondary batteries, but is composed of electronic components such as primary batteries and capacitors, and a plurality of these electronic components. It can also be applied to activate various substrates.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Battery Electrode And Active Subsutance (AREA)
• Secondary Cells (AREA)

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Citations (3)

• 2003
  • 2003-09-04 WO PCT/JP2003/011324 patent/WO2004023591A1/ja active Application Filing
  • 2003-09-04 AU AU2003261946A patent/AU2003261946A1/en not_active Abandoned
  • 2003-09-04 JP JP2004534163A patent/JP4482882B2/ja not_active Expired - Fee Related
  • 2003-09-04 CN CNB038210762A patent/CN1330048C/zh not_active Expired - Fee Related

Patent Citations (3)

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