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1. 发明专利

JP2001110407A NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION BATTERY AND THE LITHIUM ION SECONDARY BATTERY 失效
公开(公告)号：JP2001110407A
公开(公告)日：2001-04-20
申请号：JP28389299
申请日：1999-10-05
申请人： MITSUBISHI CHEM CORP
发明人： OBARA HIDEHIKO , WATANABE KENJI
IPC分类号： C01B31/02 , H01M4/02 , H01M4/36 , H01M4/587 , H01M10/05 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a material of a negative electrode for a lithium ion battery, which has a high capacity and is improved in high-temperature stability due to improvement in tightness of a SEI coating film generated on the surface of a negative electrode and a carbonic surface of the negative electrode, and to provide a lithium ion secondary battery which uses the material of the negative electrode for the lithium ion battery. SOLUTION: The material of a negative electrode for a lithium ion battery is characterized in that a positive electrode and a negative electrode are formed of a single material or a compound that can absorb and emit lithium, the single kind material or the compound which constitutes at least the negative electrode is contacted with fluorinating agent then is made react with at least one of polymerized organic materials, organic metal compounds, organic electrolytes, and inorganic electrolytes so as to generate a graft compound, in such a condition that R-value (IB/IA), that is the ratio of a peak strength (IB) of 1,350 to 1,370 cm-1 to a peak strength (IA) of 1,570 to 1,620 cm-1 is not less than 0.18 and not more than 2.00. A lithium ion secondary battery uses the material of the negative electrode.

2. 发明专利

JP2000319433A APPARATUS FOR SURFACE TREATMENT USING FLUORINE GAS 失效
公开(公告)号：JP2000319433A
公开(公告)日：2000-11-21
申请号：JP12685299
申请日：1999-05-07
申请人： MITSUBISHI CHEM CORP
发明人： WATANABE KENJI , NIWA KAZUO
IPC分类号： B01D53/68 , C08J7/12
摘要： PROBLEM TO BE SOLVED: To provide a simple apparatus for the surface treatment of a plastic product and the like with fluorine gas. SOLUTION: This apparatus is mainly composed of a gas-preparing tank 6 equipped with at least a fluorine gas-supplying pipe and a nitrogen gas- supplying pipe connected with respective gas resources, a treating tank 11 connected to the gas-preparing tank by a gas conduit and equipped with an opening capable of being tightly closed, and an exhaust gas-treating apparatus equipped with an active alumina bed for adsorbing at least fluorine gas.

3. 发明专利

JP2001294692A ARTICLE HAVING HYDROPHILIC SURFACE 失效
公开(公告)号：JP2001294692A
公开(公告)日：2001-10-23
申请号：JP2000111591
申请日：2000-04-13
申请人： MITSUBISHI CHEM CORP
发明人： NIWA KAZUO , WATANABE KENJI , HARAUCHI HIDENORI
IPC分类号： C08J7/04 , B32B27/32 , C08J7/06 , C09K3/18 , H01M8/02
摘要： PROBLEM TO BE SOLVED: To provide an article having a hydrophilic surface in spite of being formed with a hydrophobic material. SOLUTION: This article having the hydrophilic surface is obtained by treating the hydrophobic article the surface of which is formed with a polymeric compound having an aromatic ring in its molecule with fluorine gas to make the surface as the hydrophilic surface having

4. 发明专利

JP2001229908A SEPARATOR FOR LITHIUM-ION SECONDARY BATTERY, AND BATTERY USING THE SAME 失效
公开(公告)号：JP2001229908A
公开(公告)日：2001-08-24
申请号：JP2000131990
申请日：2000-05-01
申请人： MITSUBISHI CHEM CORP
发明人： WATANABE KENJI , NIWA KAZUO , HARAUCHI HIDENORI
IPC分类号： H01M2/16 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive separator having satisfactory meltdown characteristics and insulation properties. SOLUTION: The separator for lithium-ion secondary battery is formed by using a nonwoven fabric, in which binder fiber of 25 to 90 pts.wt is blended in filler fiber of 75 to 10 pts.wt.

5. 发明专利

JP2000306582A GRAPHITE MATERIAL FOR ELECTRODE AND LITHIUM ION SECONDARY BATTERY USING IT 失效
公开(公告)号：JP2000306582A
公开(公告)日：2000-11-02
申请号：JP11433299
申请日：1999-04-22
申请人： MITSUBISHI CHEM CORP
发明人： OBARA HIDEHIKO , NISHIOKA KEIKO , YAMAGUCHI SHOJI , WATANABE KENJI , MISE NOBUTAKE
IPC分类号： C01B31/04 , H01M4/02 , H01M4/36 , H01M4/587 , H01M10/05 , H01M10/0525 , H01M10/0566 , H01M4/58 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To increase the reversible capacity of a battery and to keep high capacity in rapid charge/discharge by setting the sum of the separation quantity of CO and that of CO2 due to temperature rise between specific temperatures to a specified value, and by allowing amorphous carbon to reside on a surface. SOLUTION: The sum of the separation quantities of CO and CO2 of this graphite material due to temperature rise from 25 deg.C to 800 deg.C is 5-100 μmol/g. Since the introduction of an oxygen-containing functional group is sufficient, an electrolyte and an electrolytic solution are reduced by lithium ions in utilizing it for a negative electrode, so that an interfacial film developed on the surface is stabilized, and irreversible capacity is not increased. Preferably the half-value width of a peak of 1570-1620 cm-1 in an argon laser Raman spectrum is 20-40 cm-1, and the R value that is a ratio of the peak intensity, of 1350-1370 cm-1 to this peak intensity is 0.2-2.0. Amorphous carbon on the surface is formed by a mixing baking method with an organic substance or a CVD method. The graphite material preferably introduces the oxygen-containing functional group into the surface during surface treatment by the user of fluorine, ozone or nitric acid.

6. 发明专利

JPH09251853A LITHIUM SECONDARY BATTERY AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH09251853A
公开(公告)日：1997-09-22
申请号：JP5753896
申请日：1996-03-14
申请人： MITSUBISHI CHEM CORP
发明人： WATANABE KENJI , NIWA KAZUO
IPC分类号： H01M10/05 , C01B31/02 , H01M4/587 , H01M10/0525 , H01M4/58 , H01M4/02 , H01M4/04 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To improve a battery lifetime by using a carbon material treated with a fluorinating agent and containing lithium as a negative active material. SOLUTION: A carbon material is normally granular as it is, or may be molded as a negative material in certain cases, followed by treatment with a fluorinating agent capable of discharging fluorine atoms, such as fluorine gas. A temperature of the treatment with the fluorinating agent ranges from -100 deg.C to 90 deg.C, desirably, 0-30 deg.C, at which a covalent bond of C-F cannot be substantially formed. A fluorinating time is set to the time when fluorine is uniformly supplied to the carbon material. The fluorinated carbon material is subjected to a treatment for fixing alkali extracting fluorine to the carbon material. A carbon material containing lithium is used as a negative active material.

7. 发明专利

JPH0997602A NONAQUEOUS SECONDARY BATTERY 失效
公开(公告)号：JPH0997602A
公开(公告)日：1997-04-08
申请号：JP25245495
申请日：1995-09-29
申请人： MITSUBISHI CHEM CORP
发明人： WATANABE KENJI , NIWA KAZUO , INOUE MINORU
IPC分类号： H01M4/62 , H01M4/02 , H01M4/04 , H01M10/05 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To increase the adhesion between an electrode active material layer and a current collector, and lengthen the battery life by forming an electrode by using a binder to which hydrophilic treatment is performed. SOLUTION: When an electrode for a battery is manufactured by applying slurry prepared by kneading an electrode active material, a binder, if necessary a conductive material together with a solvent to a current collector, the binder to which hydrophilic treatment is performed is used. In the electrode obtained, the adhesion of the active material layer to the current collector is increased, and the peeling off of the active material from the current collector during handling such as winding can be prevented. The life of a battery is remarkably lengthened. The hydrophilic treatment of the binder is preferable to be performed in the fluorine-containing atmosphere.

8. 发明专利

JP2001135296A SEPARATOR FOR BATTERY AND NICKEL-HYDROGEN BATTERY USING THE SAME 失效
公开(公告)号：JP2001135296A
公开(公告)日：2001-05-18
申请号：JP31352999
申请日：1999-11-04
申请人： MITSUBISHI CHEM CORP
发明人： KAWAKAMI HIROSHI , IMAKI SUNAO , WATANABE KENJI , NIWA KAZUO
IPC分类号： H01M2/16 , H01M10/30
摘要： PROBLEM TO BE SOLVED: To provide a separator for battery that reveals superior self- discharging property. SOLUTION: This separator is produced through processing a synthesized resin surface with oxides.

9. 发明专利

JPH09124312A MODIFICATION OF SURFACE OF CARBONACEOUS PARTICLE 失效
公开(公告)号：JPH09124312A
公开(公告)日：1997-05-13
申请号：JP30333795
申请日：1995-10-30
申请人： MITSUBISHI CHEM CORP
发明人： NIWA KAZUO , WATANABE KENJI
IPC分类号： C01B31/02
摘要： PROBLEM TO BE SOLVED: To provide the subject surface-modifying method capable of improving the wettability of a dispersing medium, a binder, etc., to a matrix by subjecting the surfaces of the carbonaceous particles to plural specific treatments. SOLUTION: This method for modifying the surfaces of the carbonaceous particles comprises subjecting the surfaces of the carbonaceous particles (e.g. carbon black) to a fluorine-containing gas treatment and subsequently to a steam-containing gas treatment. The fluorine gas-containing gas treatment preferably comprises bringing the fluorine-containing gas into contact with the surfaces of the carbonaceous particles at 0-50 deg.C for several see to 1hr. The steam-containing gas preferably comprises air and/or an inactive gas containing steam as saturated steam in a volume of 1-60vol.%. The fluorine- containing gas is preferably fluorine gas alone or its mixture with an inactive gas (e.g. nitrogen gas) and/or an O2 -containing gas. The treatment of the steam- containing gas is preferably performed at a flow rate of 50-1000ml/min and at a temperature of 150-350 deg.C for several min to several ten hr.

10. 发明专利

JP2000336192A RESIN MOLDED PRODUCT HAVING HYDROPHILIC SURFACE 失效
公开(公告)号：JP2000336192A
公开(公告)日：2000-12-05
申请号：JP15348899
申请日：1999-06-01
申请人： MITSUBISHI CHEM CORP
发明人： WATANABE KENJI , NIWA KAZUO , KATAYAMA HIROO
IPC分类号： C08J5/00 , C08J7/00
摘要： PROBLEM TO BE SOLVED: To obtain the subject molded product stably showing excellent hydrophilicity and useful in fields such as household electric appliances where at least antifouling property and easiness to be wiped are required by making the product out of a specific resin, by making fluorine, carbon and oxygen present on the surface of the product in a specific ratio and by specifying a contact angle with water on the surface. SOLUTION: This molded product features that it is made of a resin, whose main chain bonds are composed of imide bonds and/or amide bonds, preferably having a structure obtained by the condensation polymerization of an aromatic polycarboxylic acid with an aromatic diamine and that its surface has 5-60 deg. of a contact angle with water, has 0.15-0.30 of an atomic ratio (F/C) of fluorine to carbon and has 0.20-0.50 of an atomic ratio (0/C) of oxygen to carbon. The molded product is obtained by treating the surface of a molded product made of the above resin with a fluorine-containing gas, where the partial pressure of fluorine gas preferably is 1-100 mmHg, preferably under the pressure of 1 mmHg to 2 kg/cm2 at 0-50 deg.C.

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