Electrolytic manganese dioxide and method for producing the same and use of the same
US-2026085432-A1 · Mar 26, 2026 · US
Electrolytic manganese dioxide, and method for its production and its application
US9103044B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9103044-B2 |
| Application number | US-201013390406-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 23, 2010 |
| Priority date | Aug 24, 2009 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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An object of the present invention is to provide electrolytic manganese dioxide to be used as a cathode active material for an alkali-manganese dry cell, which has a high alkali potential and is provided with a high reactivity and packing efficiency as a cathode for the cell, and which is excellent in the middle rate discharge characteristic, and electrolytic manganese dioxide excellent in the high rate discharge characteristic and the middle rate discharge characteristic, which will not cause corrosion of metal materials, and a method for its production. In the present invention, electrolytic manganese dioxide having an alkali potential of at least 280 mV and less than 310 mV, and FWHM of at least 2.2° and at most 2.9°, is used. It is preferred that of the electrolytic manganese dioxide, the (110)/(021) peak intensity ratio in the X-ray diffraction peaks is at least 0.50 and at most 0.80, and the (110) interplanar spacing is at least 4.00 Å and at most 4.06 Å. Further, electrolytic manganese dioxide wherein the JIS-pH (JIS K1467) is at least 1.5 and less than 2.6, the sodium content is at least 0.02 wt % and less than 0.10 wt %, the sulfate group content is less than 1.30 wt %, the median diameter is at least 30 μm and at most 50 μm, and the BET specific surface area is at least 20 m 2 /g and at most 50 m 2 /g, is preferred.
First claim
Opening claim text (preview).
The invention claimed is: 1. Electrolytic manganese dioxide wherein the potential as measured in a 40 wt % KOH aqueous solution by using a mercury/mercury oxide reference electrode as a standard, is at least 280 mV and less than 310 mV, the full width at half maximum (FWHM) of the (110) plane in the XRD measurement using CuKα radiation as the light source is at least 2.2° and at most 2.9°, and the (110)/(021) peak intensity ratio in the X-ray diffraction peaks is at least 0.50 and…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9103044B2 cover?
- An object of the present invention is to provide electrolytic manganese dioxide to be used as a cathode active material for an alkali-manganese dry cell, which has a high alkali potential and is provided with a high reactivity and packing efficiency as a cathode for the cell, and which is excellent in the middle rate discharge characteristic, and electrolytic manganese dioxide excellent in the …
- Who is the assignee on this patent?
- Suetsugu Kazumasa, Takahashi Kenichi, Eshita Akinori, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C25B1/21. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 11 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).