WO2006001269A1 - マンガン乾電池 - Google Patents
マンガン乾電池 Download PDFInfo
- Publication number
- WO2006001269A1 WO2006001269A1 PCT/JP2005/011324 JP2005011324W WO2006001269A1 WO 2006001269 A1 WO2006001269 A1 WO 2006001269A1 JP 2005011324 W JP2005011324 W JP 2005011324W WO 2006001269 A1 WO2006001269 A1 WO 2006001269A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bismuth
- negative electrode
- weight
- manganese dry
- zinc
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/08—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with cup-shaped electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
- H01M6/16—Cells with non-aqueous electrolyte with organic electrolyte
- H01M6/162—Cells with non-aqueous electrolyte with organic electrolyte characterised by the electrolyte
- H01M6/168—Cells with non-aqueous electrolyte with organic electrolyte characterised by the electrolyte by additives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/22—Immobilising of electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0002—Aqueous electrolytes
Definitions
- the present invention relates to a mercury-free manganese battery, and more particularly, to an improvement in discharge characteristics and storage characteristics of a paste-type manganese battery.
- a zinc alloy containing 0.4% by weight of lead is usually used for the negative electrode can. Furthermore, if the amount of lead in the negative electrode can is reduced to less than 0.4% by weight as an environmental measure, a large amount of indium chloride is required to maintain the corrosion resistance of the negative electrode can. As a result, the surface resistance of the negative electrode can is covered with a coating of indium, thereby increasing the internal resistance and decreasing the discharge characteristics. Further, since a large amount of indium salt is required, the cost increases.
- the present invention maintains excellent discharge characteristics and storage characteristics by maintaining the corrosion resistance of the negative electrode can without using mercury and lead for a long period from the beginning.
- An object is to provide a manganese dry battery.
- the manganese dry battery of the present invention comprises a positive electrode mixture containing manganese dioxide and a negative electrode can containing zinc. And a manganese dry battery comprising a paste layer containing starch, a water-soluble paste and an electrolyte that separates the positive electrode mixture and the negative electrode can, wherein the electrolyte in the paste layer is ammonium chloride.
- the paste layer contains bismuth corresponding to 0.0005 to 0.5% by weight of the electrolyte contained in the paste layer.
- the bismuth compound strength is preferably at least one selected from the group consisting of bismuth salt strength and bismuth acid strength.
- the adhesive layer further contains an indium salt solution containing an ink corresponding to 0.001 to 0.5% by weight of the electrolyte contained in the adhesive layer.
- the negative electrode can also be made of zinc or zinc alloy with no lead added. The invention's effect
- a manganese dry battery having excellent discharge characteristics and storage characteristics can be provided by maintaining the corrosion resistance of a negative electrode can without using mercury and lead for a long period from the beginning.
- FIG. 1 is a front view, partly in section, of a paste-type manganese dry battery in an example of the present invention.
- the present invention is characterized in that it includes adhesive layer force bismuth, which is a separator for separating a positive electrode and a negative electrode in a manganese dry battery.
- This glue layer consists of starch, water-soluble glue, and electrolyte.
- the electrolyte is an aqueous solution of salty zinc and salty ammonium.
- Bismuth is added to the glue layer as a bismuth compound. For example, a polyethylene glycol alkylphenol is used as the water-soluble paste.
- the bismuth compound reacts with the ammonium ions in the electrolyte and is considered to exist as an ammonium salt of bismuth.
- This ammonium salt quickly precipitates on the zinc surface as metal bismuth by an electron exchange reaction with metal zinc, thereby increasing the hydrogen overvoltage on the zinc surface.
- bismuth compounds like mercury, suppress the corrosion of zinc negative electrode cans and exert the effect of suppressing self-discharge.
- electrolyte solution of the adhesive layer is, Shioi ⁇ ammoxidation -. Wherein ⁇ beam 10 wt% or more, the adhesive layer is 0.1 of the electrolyte contained in the adhesive layer during 0005-0 5 weight 0 / Contains bismuth corresponding to 0 . At this time, excellent discharge performance can be obtained, and in particular, excellent discharge performance can be obtained even after long-term storage, and storage characteristics are improved.
- the bismuth content exceeds 0.5% by weight, the internal resistance increases and the discharge performance deteriorates. On the other hand, if the bismuth content is less than 0.0005% by weight, the effect of the corrosion resistance of the negative electrode can becomes insufficient.
- the bismuth compound is preferably at least one selected from the group consisting of bismuth chloride and bismuth oxide power.
- BiCl is mentioned as a bismuth salt product.
- Examples of the mass oxide include BiO.
- the glue layer further contains an indium salt salt containing indium corresponding to 0.001 to 0.5% by weight of the electrolyte contained in the glue layer.
- the voltage variation of the product is slightly larger than when mercury is added. Therefore, the voltage variation can be suppressed to the same level as when mercury is added.
- metal bismuth is unevenly distributed on the surface of the zinc negative electrode can.
- Bismuth metal has the property of low electronic conductivity, which is poor in ductility.
- metallic indium with high ductility and high electron conductivity is deposited together with bismuth, so that the surface of the zinc negative electrode can be uniformly covered with both metals, and stable corrosion resistance is obtained. Conceivable.
- Examples of indium chloride include InCl, InCl, In CI, In CI, and In CI force S
- the negative electrode can, the purpose 0.4 wt 0/0 containing zinc alloy is used the lead in improving the corrosion resistance of the negative electrode can conventionally be Ru is the case or lead reduced the lead in consideration of the environment Even when no additive is used, a negative electrode can excellent in corrosion resistance can be obtained by using the adhesive layer, and a manganese dry battery excellent in discharge characteristics and storage characteristics can be obtained. That is, in the present invention, a manganese dry battery can be obtained without using lead and mercury, and an excellent battery can be constructed in terms of the environment.
- Zinc chloride, ammonium chloride, and water were mixed at a weight ratio of 10:20:70 to obtain an electrolytic solution. Then, this electrolyte solution, starch powder, and water-soluble paste are mixed at a weight ratio of 75: 24: 1, and the compounds shown in Table 2 with respect to the amount of the electrolyte solution are added to this mixture. A paste for paste layer was obtained. In Table 2, the amounts of InCl, BiCl, and BiO added are
- FIG. 1 shows a front view, partly in section, of the paste-type manganese battery of the present invention.
- the positive electrode mixture 2 includes A mixture of manganese dioxide as an active material, acetylene black as a conductive material, and an electrolytic solution having a 30% by weight aqueous solution of salt and zinc at a weight ratio of 50:10:40 was used.
- a hole for inserting the carbon rod 1 was provided at the center of the sealing body 9 made of polyolefin resin.
- the carbon rod 1 was press-fitted into the hole of the sealing body 9, and the peripheral portion of the sealing body 9 was fitted to the opening end of the negative electrode can 3.
- the positive electrode terminal 6 was fitted on the top of the carbon rod 1 which is a positive electrode current collector.
- a resin tube 11 that has a heat-shrinkable resin film force to ensure insulation is arranged, and the upper end of the tube covers the upper surface of the outer periphery of the sealing body 9, The lower surface of the seal ring 13 was covered with the lower end.
- a sealing plate 7 was arranged on the upper part of the sealing body 9.
- the positive electrode terminal 6 made of a tin plate was provided with a shape having a cap-shaped central portion and a flat plate-shaped flange portion covering the upper end portion of the carbon rod 1.
- An insulating ring 8 made of resin is disposed on the flat collar portion of the positive electrode terminal 6 and separated from the sealing plate 7.
- a bottom plate 10 serving also as a negative electrode terminal is arranged on the bottom surface of the negative electrode can 3, and a seal ring 13 is arranged on the outer surface side of the flat plate-like outer peripheral portion of the bottom plate 10.
- An outer can 12 made of a cylindrical tin plate is placed outside the resin tube 11, its lower end is bent inward, its upper end is curled inward, and the tip of its upper end is sealed Force was applied to the outer peripheral edge of the plate 7.
- the battery immediately after manufacture was discharged with a load of 2 ⁇ , and the discharge time was measured. At this time, the end voltage was set to 0.8V. The number of battery tests was five, and the average value at this time was the discharge time for each battery. The discharge characteristics were evaluated to be good when the discharge time was 125 minutes or longer.
- the battery voltage of the battery immediately after production After measuring the battery voltage of the battery immediately after production, it was stored at room temperature for 12 months. The battery voltage of the battery after storage was measured again, and the decrease in battery voltage after storage relative to the initial stage was examined. The number of battery tests was 100, and the average value at this time was defined as the decrease in battery voltage in each battery. When the battery voltage drop is 45mV or less, the storage characteristics are good. evaluated.
- the variation in battery voltage was determined for the battery after storage.
- the number of battery tests was 10 0, and the difference between the maximum value and the minimum value of the battery voltage was determined as variation.
- Comparative Example 5 the corrosion resistance of the negative electrode can was improved compared to Comparative Example 4. The decrease in voltage was suppressed, and the variation in battery voltage after storage was also reduced.
- Examples 5 to 13 in which the bismuth compound was added to the adhesive layer the corrosion resistance of the negative electrode can was improved as compared with Comparative Example 5, and the decrease in battery voltage during storage was suppressed. Further, in Examples 5 to 13, initial characteristics superior to those of Comparative Example 5 were obtained.
- Comparative Example 7 since the bismuth content was large, the internal resistance increased and the discharge characteristics deteriorated.
- Comparative Example 6 since the bismuth content was low, the corrosion resistance of the negative electrode can was insufficient, and the decrease in battery voltage after storage increased.
- Example 14 to 23 in which an indium salt additive was further added to the bismuth compound in the paste layer, the corrosion resistance of the negative electrode can was improved, and the decrease in battery voltage during storage was suppressed.
- Example 14 since the amount of indium chloride added was small, the effect of suppressing variations in battery voltage after storage was small.
- Example 21 the variation in battery voltage after storage was suppressed, but the amount of indium chloride added was increased and the internal resistance increased, so the discharge characteristics deteriorated.
- Example 15 to 20, 22, and 23 initial discharge characteristics and storage characteristics were good, and variations in battery voltage after storage were also suppressed.
- a paste-type manganese dry battery was prepared in the same manner as in Example 5, except that the lead content in the negative electrode can and the amount of bismuth chloride and indium chloride added in the glue layer were changed as shown in Table 4. The initial characteristics and storage characteristics were evaluated.
- Table 4 InCl and BiCl
- Comparative Example 8 since the content of bismuth was small, the effect of the corrosion resistance of the negative electrode can became insufficient, and the battery voltage decreased greatly after storage. In Comparative Example 9, the initial discharge characteristics deteriorated because the bismuth content increased and the internal resistance increased.
- Examples 34 to 38 containing no lead good initial discharge characteristics and storage characteristics can be obtained by adding a small amount of bismuth, and at the same time after storage by addition of indium chloride. Variation in battery voltage was suppressed.
- Example 33 since the amount of indium chloride added was small, the effect of suppressing variations in battery voltage after storage was small.
- Example 39 the variation in battery voltage after storage was suppressed, but the amount of indium chloride added was increased and the internal resistance increased, so the discharge characteristics deteriorated.
- the paste-type manganese dry battery of the present invention has excellent discharge characteristics and storage characteristics.
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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)
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-190169 | 2004-06-28 | ||
JP2004190169A JP2006012685A (ja) | 2004-06-28 | 2004-06-28 | 糊式マンガン乾電池 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006001269A1 true WO2006001269A1 (ja) | 2006-01-05 |
Family
ID=35779671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/011324 WO2006001269A1 (ja) | 2004-06-28 | 2005-06-21 | マンガン乾電池 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2006012685A (ja) |
CN (1) | CN100472861C (ja) |
PE (1) | PE20060514A1 (ja) |
WO (1) | WO2006001269A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007018231A1 (ja) * | 2005-08-09 | 2007-02-15 | Matsushita Electric Industrial Co., Ltd. | マンガン乾電池 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8974973B2 (en) * | 2010-05-27 | 2015-03-10 | Wing Fai Leung | Starch-based battery system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0620689A (ja) * | 1992-07-01 | 1994-01-28 | Toshiba Battery Co Ltd | マンガン乾電池 |
JPH06163019A (ja) * | 1992-11-19 | 1994-06-10 | Matsushita Electric Ind Co Ltd | 糊式マンガン乾電池 |
JPH06325771A (ja) * | 1993-05-14 | 1994-11-25 | Toshiba Battery Co Ltd | マンガン乾電池 |
-
2004
- 2004-06-28 JP JP2004190169A patent/JP2006012685A/ja active Pending
-
2005
- 2005-06-21 CN CNB2005800126988A patent/CN100472861C/zh not_active Expired - Fee Related
- 2005-06-21 WO PCT/JP2005/011324 patent/WO2006001269A1/ja active Application Filing
- 2005-06-27 PE PE2005000740A patent/PE20060514A1/es active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0620689A (ja) * | 1992-07-01 | 1994-01-28 | Toshiba Battery Co Ltd | マンガン乾電池 |
JPH06163019A (ja) * | 1992-11-19 | 1994-06-10 | Matsushita Electric Ind Co Ltd | 糊式マンガン乾電池 |
JPH06325771A (ja) * | 1993-05-14 | 1994-11-25 | Toshiba Battery Co Ltd | マンガン乾電池 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007018231A1 (ja) * | 2005-08-09 | 2007-02-15 | Matsushita Electric Industrial Co., Ltd. | マンガン乾電池 |
EP1892778A1 (en) * | 2005-08-09 | 2008-02-27 | Matsushita Electric Industrial Co., Ltd. | Manganese dry cell |
EP1892778A4 (en) * | 2005-08-09 | 2009-02-04 | Panasonic Corp | MANGANESE DRY CELL |
Also Published As
Publication number | Publication date |
---|---|
PE20060514A1 (es) | 2006-07-15 |
CN100472861C (zh) | 2009-03-25 |
JP2006012685A (ja) | 2006-01-12 |
CN1947295A (zh) | 2007-04-11 |
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