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1. 发明公开

EP4357485A1 IRIDIUM-MANGANESE OXIDE COMPOSITE MATERIAL, IRIDIUM-MANGANESE OXIDE COMPOSITE ELECTRODE MATERIAL, AND METHODS FOR PRODUCING SAME 审中-实审
公开(公告)号：EP4357485A1
公开(公告)日：2024-04-24
申请号：EP22824949.6
申请日：2022-06-13
申请人： RIKEN , Tosoh Corporation
发明人： NAKAMURA, Ryuhei , KONG, Shuang , LI, Ailong , FUSHIMI, Kazuna , SUETSUGU, Kazumasa , OKADA, Takuya
IPC分类号： C25B11/093 , B01J23/656 , B01J37/02 , B01J37/08 , C25B1/04 , C25B1/21 , C25B9/00 , C25B9/23 , C25B11/052 , C25B11/063 , C25B11/065 , C25D9/04
CPC分类号： Y02E60/36 , B01J23/656 , B01J37/02 , B01J37/08 , C25B1/04 , C25B1/21 , C25B9/00 , C25B9/23 , C25B11/052 , C25B11/063 , C25B11/065 , C25B11/093 , C25D9/04
摘要： Provided are an iridium-manganese oxide composite material and an iridium-manganese oxide composite electrode material that are inexpensive and have high catalytic activity for use in an anode catalyst for oxygen evolution associated with water electrolysis. Also provided are methods for producing the same. An iridium-manganese oxide composite material comprising a manganese oxide and iridium distributed on at least a surface of the manganese oxide, the iridium having a metal valence of 3.1 or greater and 3.8 or less. An iridium-manganese oxide composite electrode material comprising a conductive substrate formed of a fiber, with the iridium-manganese oxide composite material being coated on at least a portion of the conductive substrate.

2. 发明公开

EP4130339A1 MANGANESE-IRIDIUM COMPLEX OXIDE FOR WATER DECOMPOSITION CATALYST, MANGANESE-IRIDIUM COMPLEX OXIDE ELECTRODE MATERIAL, AND PRODUCTION METHODS THEREFOR 审中-实审
公开(公告)号：EP4130339A1
公开(公告)日：2023-02-08
申请号：EP21774005.9
申请日：2021-03-19
申请人： RIKEN , Tosoh Corporation
发明人： NAKAMURA, Ryuhei , BONNET, Nadege , KONG, Shuang , SUETSUGU, Kazumasa
IPC分类号： C25B1/01 , C25B1/04 , C25B9/23 , C25B11/04 , B01J23/656 , C25B1/21 , C25B9/00
摘要： To provide a manganese-iridium composite oxide, a manganese-iridium composite oxide and a manganese-iridium composite oxide electrode material, having high catalytic activity produced at low cost, to be used as an anode catalyst for oxygen evolution in water electrolysis, and their production methods.
A manganese-iridium composite oxide, which has an iridium metal content ratio (iridium/(manganese + iridium)) of 0.1 atomic% or more and 30 atomic% or less, and has interplanar spacings of at least 0.243±0.002 nm, 0.214±0.002 nm, 0.165±0.002 nm, 0.140±0.002 nm, and a manganese-iridium composite oxide electrode material comprising an electrically conductive substrate constituted by fibers at least part of which are covered with the above manganese-iridium composite oxide.

3. 发明授权

EP2471976B1 ELECTROLYTIC MANGANESE DIOXIDE, METHOD FOR PRODUCING SAME, AND USE OF SAME 有权
公开(公告)号：EP2471976B1
公开(公告)日：2019-10-02
申请号：EP10811815.9
申请日：2010-08-23
申请人： Tosoh Corporation
发明人： SUETSUGU, Kazumasa , TAKAHASHI, Kenichi , ESHITA, Akinori
IPC分类号： C25B1/21 , H01M4/50

4. 发明公开

EP3438328A1 ELECTROLYTIC MANGANESE DIOXIDE, METHOD FOR MANUFACTURING SAME, AND USE FOR SAME 审中-公开
公开(公告)号：EP3438328A1
公开(公告)日：2019-02-06
申请号：EP17774777.1
申请日：2017-03-24
申请人： Tosoh Corporation
发明人： MIURA, Hiroshi , SUETSUGU, Kazumasa , SHOJI, Takayuki
IPC分类号： C25B1/21 , C01G45/02 , H01M4/50
摘要： To provide electrolytic manganese dioxide excellent in packing property and high-rate discharge characteristics when used as a cathode material for alkaline dry cells. Electrolytic manganese dioxide in which the half-value width of the (110) plane in XRD measurement using CuKa line as the radiation source is at least 1.8° and less than 2.2°, the peak intensity ratio of X-ray diffraction peaks (110)/(021) is at least 0.70 and at most 1.00, and the JIS-pH (JIS K1467) is at least 1.5 and less than 5.0; a method for producing the electrolytic manganese dioxide; and its application.

5. 发明公开

EP2818583A1 ELECTROLYTIC MANGANESE DIOXIDE, METHOD FOR PRODUCING SAME, AND USE OF SAME 有权
标题翻译：电解二氧化锰，方法其制造及其用途
公开(公告)号：EP2818583A1
公开(公告)日：2014-12-31
申请号：EP13752318.9
申请日：2013-02-20
申请人： Tosoh Corporation
发明人： SUETSUGU, Kazumasa , SEKITANI, Kazuo
IPC分类号： C25B1/21 , H01M4/50
CPC分类号： H01M4/50 , C25B1/21 , H01M6/06 , H01M2220/30
摘要： The object of the present invention is to provide electrolytic manganese dioxide excellent in the middle rate discharge characteristic as compared with conventional electrolytic manganese dioxide, and a method for its production and its application.
Electrolytic manganese dioxide characterized in that the potential as measured in a 40 wt% KOH aqueous solution by using a mercury/mercury oxide reference electrode as a standard is higher than 250 mV and less than 310 mV, and the volume of pores having a pore diameter of at least 2 nm and at most 50 nm is at most 0.0055 cm 3 /g. Of such electrolytic manganese dioxide, the volume of pores having a pore diameter of at least 2 nm and at most 200 nm is preferably at most 0.0555 cm 3 /g.

6. 发明公开

EP2471976A1 ELECTROLYTIC MANGANESE DIOXIDE, METHOD FOR PRODUCING SAME, AND USE OF SAME 有权
标题翻译： ELEKTROLYTISCHES MANGANDIOXID，VERFAHREN ZU SEINER HERSTELLUNG UND SEINE VERWENDUNG
公开(公告)号：EP2471976A1
公开(公告)日：2012-07-04
申请号：EP10811815.9
申请日：2010-08-23
申请人： Tosoh Corporation
发明人： SUETSUGU, Kazumasa , TAKAHASHI, Kenichi , ESHITA, Akinori
IPC分类号： C25B1/21 , C01G45/02 , H01M4/50
CPC分类号： C25B1/21 , C01G45/02 , C01P2004/61 , C01P2006/12 , C01P2006/80 , H01M4/50 , H01M4/52 , H01M6/06 , Y10T428/2982
摘要： 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.
摘要翻译：本发明的目的是提供一种用作碱锰电池的正极活性物质的电解二氧化锰，其具有高的碱电位并且具有高的反应性和填充效率，作为电池的阴极，中速放电特性优异，而且不会引起金属材料腐蚀的高倍率放电特性和中速放电特性优异的电解二氧化锰及其制造方法。在本发明中，使用碱电势为280mV以上且小于310mV，FWHM为2.2以上且2.9以下的电解二氧化锰。优选的是，在电解二氧化锰中，X射线衍射峰中的（110）/（O21）峰强度比为至少0.50且至多为0.80，（110）晶面间距至少为4.00，最多4.06Å。此外，其中JIS-pH（JIS K1467）为至少1.5且小于2.6的电解二氧化锰，钠含量为至少0.02重量％且小于0.10重量％，硫酸根基团含量小于1.30重量％中值粒径为30μm以上50μm以下，BET比表面积为20m 2 / g以上且50m 2 / g以下。

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