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Применить Всего найдено 7. Отображено 6.
27-10-2016 дата публикации

CATHODE ACTIVE MATERIAL FOR OVERCHARGE PROTECTION IN SECONDARY LITHIUM BATTERIES

Номер: US20160315355A1
Автор: Peter B. Hallac, Sung-Jin Cho, Frederic C. Bonhomme, Mohamed Taggougui, David R. Boone, Qingfang Shi, Alexandre Ndedi Ntepe, HALLAC PETER B, CHO SUNG-JIN, BONHOMME FREDERIC C, TAGGOUGUI MOHAMED, BOONE DAVID R, SHI QINGFANG, NTEPE ALEXANDRE NDEDI, Hallac Peter B., Cho Sung-Jin, Bonhomme Frederic C., Taggougui Mohamed, Boone David R., Shi Qingfang, Ntepe Alexandre Ndedi
Принадлежит:

A method of manufacturing a battery cathode includes forming a mixture having a lithium metal oxide and an overcharge protection additive, the overcharge protection additive having an operating voltage higher than an operating voltage of the lithium metal oxide. The lithium metal oxide is provided in an amount sufficient to provide a desired operating capacity for a lithium ion battery cell, and the overcharge protection additive has a higher operating voltage than the lithium metal oxide such that the overcharge protection additive can undergo reversible lithium removal during overcharging of the lithium ion battery cell. The method also includes contacting the mixture with a current collector. 1. A method of employing an overcharge protection additive in a lithium ion battery cell , the lithium ion battery cell having a positive electrode comprising a mixture of a lithium metal oxide and the overcharge protection additive , the overcharge protection additive having an operating voltage higher than an operating voltage of the lithium metal oxide , the method comprising:operating the lithium ion battery cell at a voltage at which the overcharge protection additive is inactive, and at an operating capacity defined by the amount of the lithium metal oxide present in the positive electrode, wherein a state of charge (SOC) of the lithium ion battery cell is defined by the state of the lithium metal oxide; andovercharging the lithium ion battery cell beyond the operating voltage of the lithium metal oxide such that the lithium ion battery cell is charged at least to 130% SOC and the overcharge protection additive of the positive electrode becomes active, the overcharging causing reversible lithium extraction from the overcharge protection additive.2. The method of claim 1 , wherein during the overcharging the overcharge protection additive accepts surplus current and prevents sharp potential excursions in the potential of the positive electrode resulting in a plateau- ...

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Номер записи: 1
05-06-2018 дата публикации

Cathode active material for overcharge protection in secondary lithium batteries

Номер: US0009991566B2
Автор: Peter B. Hallac, Sung-Jin Cho, Frederic C. Bonhomme, Mohamed Taggougui, David R. Boone, Qingfang Shi, Alexandre Ndedi Ntepe, HALLAC PETER B, CHO SUNG-JIN, BONHOMME FREDERIC C, TAGGOUGUI MOHAMED, BOONE DAVID R, SHI QINGFANG, NTEPE ALEXANDRE NDEDI, Hallac, Peter B., Cho, Sung-Jin, Bonhomme, Frederic C., Taggougui, Mohamed, Boone, David R., Shi, Qingfang, Ntepe, Alexandre Ndedi
Принадлежит: Johnson Controls Technology Company, JOHNSON CONTROLS TECH LLC, JOHNSON CONTROLS TECH CO, Johnson Controls Technology LLC

Provided herein is an electrode active material comprising a lithium metal oxide and an overcharge protection additive having an operating voltage higher than the operating voltage of the lithium metal oxide.

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Номер записи: 2
09-05-2013 дата публикации

CATHODE ACTIVE MATERIAL FOR OVERCHARGE PROTECTION IN SECONDARY LITHIUM BATTERIES

Номер: US20130115515A1
Автор: Peter B. Hallac, Sung-Jin Cho, Frederic C. Bonhomme, Mohamed Taggougui, David R. Boone, Qingfang Shi, Alexandre Ndedi Ntepe
Принадлежит: JOHNSON CONTROLS TECHNOLOGY LLC

Provided herein is an electrode active material comprising a lithium metal oxide and an overcharge protection additive having an operating voltage higher than the operating voltage of the lithium metal oxide.

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Номер записи: 3
19-12-2013 дата публикации

Electrolyte Formulation for High Voltage and Wide Temperature Lithium-Ion Cells

Номер: US20130337342A1
Автор: Fell Christopher R., Hallac Peter B., Jiang Junwei
Принадлежит:

An electrochemical cell provided with a positive electrode, a negative electrode, and an electrolyte. The positive electrode comprises a stabilized lithium metal oxide material, the lithium metal oxide material comprising one or more transition metal ions. The electrolyte is prepared by mixing ingredients comprising a solvent, a lithium salt, and a sultone. 1. An electrochemical cell provided with a positive electrode , a negative electrode , and an electrolyte , where:the positive electrode comprises a stabilized lithium metal oxide material, the lithium metal oxide material comprising one or more transition metal ions; andthe electrolyte is prepared by mixing ingredients comprising a solvent, a lithium salt, and a sultone.2. The electrochemical cell of claim 1 , where the stabilized lithium metal oxide material in its initial discharged state is represented by formula xLiMO.(1-x)LiM′O claim 1 , where 0 Подробнее

Номер записи: 4
10-09-2014 дата публикации

Cathode active material for overcharge protection in secondary lithium batteries

Номер: EP2774198A1
Автор: Alexandre Ndedi Ntepe, David R. Boone, Frederic C. Bonhomme, Mohamed Taggougui, Peter B. Hallac, Qingfang Shi, Sun-Jin CHO
Принадлежит: Johnson Controls Technology Co

Provided herein is an electrode active material comprising a lithium metal oxide and an overcharge protection additive having an operating voltage higher than the operating voltage of the lithium metal oxide.

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Номер записи: 5
10-05-2013 дата публикации

Cathode active material for overcharge protection in secondary lithium batteries

Номер: WO2013067135A1
Автор: Alexandre Ndedi Ntepe, David R. Boone, Frederic C. Bonhomme, Mohamed Taggougui, Peter B. Hallac, Qingfang Shi, Sun-Jin CHO
Принадлежит: Johnson Controls Technology LLC

Provided herein is an electrode active material comprising a lithium metal oxide and an overcharge protection additive having an operating voltage higher than the operating voltage of the lithium metal oxide.

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Номер записи: 6