Patents by Inventor Yongrong Dong
Yongrong Dong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9531028Abstract: A redox flow battery charged and discharged by supply of a positive electrode electrolyte stored in a positive electrode tank and a negative electrode electrolyte stored in a negative electrode tank to a battery element, in which the positive electrode electrolyte contains a Mn ion as a positive electrode active material, and the positive electrode tank includes a positive electrode charging pipe opening to a position close to a liquid level of the positive electrode electrolyte in the positive electrode tank, and a positive electrode discharging pipe opening to a position close to the bottom of the positive electrode tank. This redox flow battery can include a stirring mechanism for stirring the electrolytes in the tanks, and can include a connection pipe connecting the positive electrode tank to the negative electrode tank.Type: GrantFiled: June 22, 2012Date of Patent: December 27, 2016Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takahiro Kumamoto, Yongrong Dong, Toshio Shigematsu
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Patent number: 9391340Abstract: Provided are an electrolyte for a redox flow battery, the electrolyte allowing suppression of generation of hydrogen during a battery reaction; and a redox flow battery including the electrolyte. In the electrolyte for a redox flow battery, the total concentration of platinum-group element ions is 4.5 mass ppm or less. The platinum-group element ions may satisfy in terms of concentration at least one of those described below: the concentration of rhodium ions is 1 mass ppm or less, the concentration of palladium ions is 1 mass ppm or less, the concentration of iridium ions is 1 mass ppm or less, and the concentration of platinum ions is 1 mass ppm or less.Type: GrantFiled: August 7, 2013Date of Patent: July 12, 2016Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yongrong Dong, Ryojun Sekine, Hirokazu Kaku, Michiru Kubata
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Publication number: 20160181640Abstract: Provided is a redox flow battery that allows suppression of generation of precipitate and also has a high energy density. The redox flow battery includes a battery cell including a positive electrode, a negative electrode, and a membrane interposed between the electrodes, the battery being configured to be charged and discharged while a positive electrode electrolyte and a negative electrode electrolyte are supplied to the battery cell, wherein the positive electrode electrolyte contains manganese ions, titanium ions, and reactive metal ions, the negative electrode electrolyte contains at least one species of metal ions selected from titanium ions, vanadium ions, chromium ions, and zinc ions, and the reactive metal ions are at least one selected from vanadium ions, chromium ions, iron ions, cobalt ions, copper ions, molybdenum ions, ruthenium ions, palladium ions, silver ions, tungsten ions, mercury ions, and cerium ions.Type: ApplicationFiled: August 4, 2014Publication date: June 23, 2016Applicant: Sumitomo Electric Industries, Ltd.Inventors: Hirokazu Kaku, Yongrong Dong, Kei Hanafusa, Ryojun Sekine
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Patent number: 9331356Abstract: Provided are an electrolyte for a redox flow battery, the electrolyte allowing suppression of generation of precipitate and suppression of generation of hydrogen during a battery reaction; and a redox flow battery including the electrolyte. In the electrolyte for a redox flow battery, the total concentration of impurity element ions contributing to generation of precipitate during a battery reaction is 220 mass ppm or less, and the total concentration of platinum-group element ions is 4.5 mass ppm or less. In a case where the impurity element ions contributing to generation of precipitate include metal element ions, the total concentration of the metal element ions may be 195 mass ppm or less.Type: GrantFiled: August 7, 2013Date of Patent: May 3, 2016Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yongrong Dong, Ryojun Sekine, Hirokazu Kaku, Michiru Kubata
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Publication number: 20160013506Abstract: Provided is a redox flow battery that can suppress generation of a precipitation on a positive electrode. The redox flow battery performs charging and discharging by supplying a positive electrode electrolyte and a negative electrode electrolyte to a battery cell that includes a positive electrode, a negative electrode, and a separating membrane interposed between the two electrodes. The positive electrode electrolyte contains a manganese ion and an additional metal ion, the negative electrode electrolyte contains at least one metal ion selected from a titanium ion, a vanadium ion, a chromium ion, and a zinc ion, and the additional metal ion contained in the positive electrode electrolyte is at least one of an aluminum ion, a cadmium ion, an indium ion, a tin ion, an antimony ion, an iridium ion, a gold ion, a lead ion, a bismuth ion, and a magnesium ion.Type: ApplicationFiled: August 4, 2014Publication date: January 14, 2016Inventors: Yongrong Dong, Hirokazu Kaku, Kei Hanafusa, Ryojun Sekine
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Publication number: 20150325873Abstract: Provided are an electrolyte for a redox flow battery, the electrolyte allowing suppression of generation of precipitate and suppression of generation of hydrogen during a battery reaction; and a redox flow battery including the electrolyte. In the electrolyte for a redox flow battery, the total concentration of impurity element ions contributing to generation of precipitate during a battery reaction is 220 mass ppm or less, and the total concentration of platinum-group element ions is 4.5 mass ppm or less. In a case where the impurity element ions contributing to generation of precipitate include metal element ions, the total concentration of the metal element ions may be 195 mass ppm or less.Type: ApplicationFiled: August 7, 2013Publication date: November 12, 2015Inventors: Yongrong DONG, Ryojun SEKINE, Hirokazu KAKU, Michiru KUBATA
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Patent number: 9118064Abstract: Provided are a redox flow battery (RF battery) in which a positive electrode electrolyte and a negative electrode electrolyte are supplied to a battery cell including a positive electrode, a negative electrode, and a membrane, to charge and discharge the battery, and a method of operating the RF battery. The positive electrode electrolyte contains a manganese ion, or both of a manganese ion and a titanium ion. The negative electrode electrolyte contains at least one type of metal ion selected from a titanium ion, a vanadium ion, a chromium ion, a zinc ion, and a tin ion. The RF battery can have a high electromotive force and can suppress generation of a precipitation of MnO2 by containing a titanium ion in the positive electrode electrolyte, or by being operated such that the positive electrode electrolyte has an SOC of not more than 90%.Type: GrantFiled: March 8, 2011Date of Patent: August 25, 2015Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yongrong Dong, Toshio Shigematsu, Takahiro Kumamoto, Michiru Kubata
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Publication number: 20150228997Abstract: Provided are an electrolyte for a redox flow battery, the electrolyte allowing suppression of generation of hydrogen during a battery reaction; and a redox flow battery including the electrolyte. In the electrolyte for a redox flow battery, the total concentration of platinum-group element ions is 4.5 mass ppm or less. The platinum-group element ions may satisfy in terms of concentration at least one of those described below: the concentration of rhodium ions is 1 mass ppm or less, the concentration of palladium ions is 1 mass ppm or less, the concentration of iridium ions is 1 mass ppm or less, and the concentration of platinum ions is 1 mass ppm or less.Type: ApplicationFiled: August 7, 2013Publication date: August 13, 2015Inventors: Yongrong Dong, Ryojun Sekine, Hirokazu Kaku, Michiru Kubata
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Publication number: 20150221969Abstract: Provided is an electrolyte for a redox flow battery, the electrolyte allowing suppression of generation of precipitate during a battery reaction. In the electrolyte for a redox flow battery, the total concentration of impurity element ions contributing to generation of precipitate during a battery reaction is 220 mass ppm or less. In a case where the impurity element ions contributing to generation of precipitate include metal element ions, the total concentration of the metal element ions may be 195 mass ppm or less. In a case where the impurity element ions contributing to generation of precipitate include non-metal element ions, the total concentration of the non-metal element ions may be 21 mass ppm or less.Type: ApplicationFiled: August 7, 2013Publication date: August 6, 2015Inventors: Ryojun Sekine, Yongrong Dong, Michiru Kubata, Hirokazu Kaku
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Publication number: 20150140471Abstract: A redox flow battery electrolyte contains 5 mg/liter or less of an organic substance having a moiety containing an aliphatic hydrocarbon containing 8 carbon atoms to 24 carbon atoms, excluding a redox flow battery electrolyte containing at least one selected from the group consisting of 1-tetradecene, n-decane, 1-octanethiol, and ester-based organic substances having a moiety containing an aliphatic hydrocarbon containing 8 carbon atoms.Type: ApplicationFiled: March 31, 2014Publication date: May 21, 2015Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventor: Yongrong Dong
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Publication number: 20140255821Abstract: A redox flow cell membrane includes a porous membrane that has a mean flow pore size of not more than 100 nm, that has a thickness of not more than 500 ?m, and that has an air flow rate of not less than 0.1 ml/s·cm2. When the redox flow cell membrane is used for a V—V-based redox flow cell, the porous membrane preferably has a mean flow pore size of not more than 30 nm.Type: ApplicationFiled: November 21, 2012Publication date: September 11, 2014Inventors: Hirokazu Katayama, Yasuhiro Okuda, Naoki Shimbara, Toshio Shigematsu, Yongrong Dong, Kei Hanafusa, Fumihiro Hayashi, Aya Ooya
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Patent number: 8771857Abstract: A redox flow (RF) battery performs charge and discharge by supplying a positive electrode electrolyte and a negative electrode electrolyte to a battery cell. Each of the positive electrode electrolyte and the negative electrode electrolyte contains a vanadium (V) ion as active material. At least one of the positive electrode electrolyte and the negative electrode electrolyte further contains another metal ion, for example, a metal ion such as a manganese ion that exhibits a higher redox potential than a V ion or a metal ion such as a chromium ion that exhibits a lower redox potential than a V ion.Type: GrantFiled: April 27, 2011Date of Patent: July 8, 2014Assignee: Sumitomo Electric Industries, Ltd.Inventors: Toshio Shigematsu, Yongrong Dong, Takahiro Kumamoto
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Publication number: 20140134465Abstract: A redox flow battery charged and discharged by supply of a positive electrode electrolyte stored in a positive electrode tank and a negative electrode electrolyte stored in a negative electrode tank to a battery element, in which the positive electrode electrolyte contains a Mn ion as a positive electrode active material, and the positive electrode tank includes a positive electrode charging pipe opening to a position close to a liquid level of the positive electrode electrolyte in the positive electrode tank, and a positive electrode discharging pipe opening to a position close to the bottom of the positive electrode tank. This redox flow battery can include a stirring mechanism for stirring the electrolytes in the tanks, and can include a connection pipe connecting the positive electrode tank to the negative electrode tank.Type: ApplicationFiled: June 22, 2012Publication date: May 15, 2014Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takahiro Kumamoto, Yongrong Dong, Toshio Shigematsu
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Patent number: 8632903Abstract: A redox flow battery in which a positive electrode electrolyte stored in a positive electrode tank and a negative electrode electrolyte stored in a negative electrode tank are supplied to a battery element to charge and discharge the battery is provided, the positive electrode electrolyte in the redox flow battery containing a Mn ion as a positive electrode active material, the negative electrode electrolyte containing at least one of a Ti ion, a V ion, and a Cr ion as a negative electrode active material, in which the redox flow battery includes a negative-electrode-side introduction duct in communication with inside of the negative electrode tank from outside thereof, for introducing oxidizing gas into the negative electrode tank, and a supply mechanism for supplying the oxidizing gas into the negative electrode tank via the negative-electrode-side introduction duct.Type: GrantFiled: November 10, 2011Date of Patent: January 21, 2014Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yongrong Dong, Toshio Shigematsu, Takahiro Kumamoto
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Publication number: 20130157162Abstract: A redox flow battery in which a positive electrode electrolyte stored in a positive electrode tank and a negative electrode electrolyte stored in a negative electrode tank are supplied to a battery element to charge and discharge the battery is provided, the positive electrode electrolyte in the redox flow battery containing a Mn ion as a positive electrode active material, the negative electrode electrolyte containing at least one of a Ti ion, a V ion, and a Cr ion as a negative electrode active material, in which the redox flow battery includes a negative-electrode-side introduction duct in communication with inside of the negative electrode tank from outside thereof, for introducing oxidizing gas into the negative electrode tank, and a supply mechanism for supplying the oxidizing gas into the negative electrode tank via the negative-electrode-side introduction duct.Type: ApplicationFiled: November 10, 2011Publication date: June 20, 2013Applicant: Sumitomo Electric Industries, Ltd.Inventors: Yongrong Dong, Toshio Shigematsu, Takahiro Kumamoto
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Publication number: 20130045400Abstract: Provided are a redox flow battery (RF battery) in which a positive electrode electrolyte and a negative electrode electrolyte are supplied to a battery cell including a positive electrode, a negative electrode, and a membrane, to charge and discharge the battery, and a method of operating the RF battery. The positive electrode electrolyte contains a manganese ion, or both of a manganese ion and a titanium ion. The negative electrode electrolyte contains at least one type of metal ion selected from a titanium ion, a vanadium ion, a chromium ion, a zinc ion, and a tin ion. The RF battery can have a high electromotive force and can suppress generation of a precipitation of MnO2 by containing a titanium ion in the positive electrode electrolyte, or by being operated such that the positive electrode electrolyte has an SOC of not more than 90%.Type: ApplicationFiled: March 8, 2011Publication date: February 21, 2013Applicant: Sumitomo Electric Industries, Ltd.Inventors: Yongrong Dong, Toshio Shigematsu, Takahiro Kumamoto, Michiru Kubata
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Publication number: 20120282509Abstract: A redox flow (RF) battery is provided that performs charge and discharge by supplying a positive electrode electrolyte and a negative electrode electrolyte to a positive electrode cell and a negative cell, respectively. Each of the positive and negative electrode electrolytes contains a vanadium (V) ion as active material. At least one of the positive and negative electrode electrolytes further contains another metal ion, for example, a manganese ion that exhibits a higher redox potential than a V ion or a chromium ion that exhibits a lower redox potential than a V ion. Even in cases where the RF battery is nearly fully charged, side reactions such as generation of oxygen has or hydrogen gas due to water decomposition and oxidation degradation of an electrode can be suppressed since the above-mentioned another metal ion contained together with the V ion is oxidized or reduced in the late stage of charge.Type: ApplicationFiled: May 16, 2012Publication date: November 8, 2012Applicant: Sumitomo Electric Industries, Ltd.Inventors: Toshio Shigematsu, Yongrong Dong, Takahiro Kumamoto
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Patent number: 8288030Abstract: A redox flow battery having a high electromotive force and capable of suppressing generation of a precipitation is provided. In a redox flow battery 100, a positive electrode electrolyte and a negative electrode electrolyte are supplied to a battery cell including a positive electrode 104, a negative electrode 105, and a membrane 101 interposed between the electrodes 104 and 105, to charge and discharge the battery. The positive electrode electrolyte contains a manganese ion, or both of a manganese ion and a titanium ion. The negative electrode electrolyte contains at least one type of metal ion selected from a titanium ion, a vanadium ion, a chromium ion, a zinc ion, and a tin ion. The redox flow battery 100 can suppress generation of a precipitation of MnO2, and can be charged and discharged well by containing a titanium ion in the positive electrode electrolyte, or by being operated such that the positive electrode electrolyte has an SOC of not more than 90%.Type: GrantFiled: September 10, 2010Date of Patent: October 16, 2012Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yongrong Dong, Toshio Shigematsu, Takahiro Kumamoto, Michiru Kubata
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Publication number: 20120244405Abstract: A redox flow (RF) battery performs charge and discharge by supplying a positive electrode electrolyte and a negative electrode electrolyte to a battery cell. Each of the positive electrode electrolyte and the negative electrode electrolyte contains a vanadium (V) ion as active material. At least one of the positive electrode electrolyte and the negative electrode electrolyte further contains another metal ion, for example, a metal ion such as a manganese ion that exhibits a higher redox potential than a V ion or a metal ion such as a chromium ion that exhibits a lower redox potential than a V ion.Type: ApplicationFiled: April 27, 2011Publication date: September 27, 2012Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTDInventors: Toshio Shigematsu, Yongrong Dong, Takahiro Kumamoto
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Publication number: 20120045680Abstract: A redox flow battery having a high electromotive force and capable of suppressing generation of a precipitation is provided. In a redox flow battery 100, a positive electrode electrolyte and a negative electrode electrolyte are supplied to a battery cell including a positive electrode 104, a negative electrode 105, and a membrane 101 interposed between the electrodes 104 and 105, to charge and discharge the battery. The positive electrode electrolyte contains a manganese ion, or both of a manganese ion and a titanium ion. The negative electrode electrolyte contains at least one type of metal ion selected from a titanium ion, a vanadium ion, a chromium ion, a zinc ion, and a tin ion. The redox flow battery 100 can suppress generation of a precipitation of MnO2, and can be charged and discharged well by containing a titanium ion in the positive electrode electrolyte, or by being operated such that the positive electrode electrolyte has an SOC of not more than 90%.Type: ApplicationFiled: September 10, 2010Publication date: February 23, 2012Inventors: Yongrong Dong, Toshio Shigematsu, Takahiro Kumamoto, Michiru Kubata