RU2013132124A - METHOD FOR PRODUCING LITHIUM-IRON-PHOSPHATE - Google Patents

METHOD FOR PRODUCING LITHIUM-IRON-PHOSPHATE Download PDF

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RU2013132124A
RU2013132124A RU2013132124/05A RU2013132124A RU2013132124A RU 2013132124 A RU2013132124 A RU 2013132124A RU 2013132124/05 A RU2013132124/05 A RU 2013132124/05A RU 2013132124 A RU2013132124 A RU 2013132124A RU 2013132124 A RU2013132124 A RU 2013132124A
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Russia
Prior art keywords
iron
mixing
phosphate
lithium
aqueous solution
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RU2013132124/05A
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Russian (ru)
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RU2585646C2 (en
Inventor
Михаил Александрович Архипов
Мухамед Магомедович Арсанукаев
Сергей Степанович Ковалёв
Владимир Фёдорович Шицле
Владимир Анатольевич Муханов
Александр Иванович Мотчаный
Ольга Викторовна Соловьёва
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Общество с ограниченной ответственностью "Минерал"
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Priority to RU2013132124/05A priority Critical patent/RU2585646C2/en
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Abstract

Способ получения литий-железо-фосфата, включающий смешивание в стехиометрическом соотношении соединения железа с водным раствором, содержащим литий- и фосфат-ионы в присутствии углеродсодержащего вещества, активирование полученной смеси и последующую термическую обработку продукта взаимодействия, отличающийся тем, что в качестве соединения железа используют порошок оксида железа со степенью окисления железа в диапазоне +2,03… +2,2 с размером частиц до 125 мкм, смешивая его с водным раствором дигидрофосфата лития концентрации 30-57 вес.%, а активирование полученной смеси путем механического перемешивания осуществляют при температуре 15-30°С до образования геля.A method of producing lithium iron phosphate, comprising mixing in a stoichiometric ratio a compound of iron with an aqueous solution containing lithium and phosphate ions in the presence of a carbon-containing substance, activating the resulting mixture and subsequent heat treatment of the reaction product, characterized in that the iron compound is used iron oxide powder with an oxidation state of iron in the range + 2.03 ... +2.2 with a particle size of up to 125 microns, mixing it with an aqueous solution of lithium dihydrogen phosphate concentration of 30-57 wt.%, and tivirovanie mixture obtained by the mechanical mixing is carried out at a temperature of 15-30 ° C to form a gel.

Claims (1)

Способ получения литий-железо-фосфата, включающий смешивание в стехиометрическом соотношении соединения железа с водным раствором, содержащим литий- и фосфат-ионы в присутствии углеродсодержащего вещества, активирование полученной смеси и последующую термическую обработку продукта взаимодействия, отличающийся тем, что в качестве соединения железа используют порошок оксида железа со степенью окисления железа в диапазоне +2,03… +2,2 с размером частиц до 125 мкм, смешивая его с водным раствором дигидрофосфата лития концентрации 30-57 вес.%, а активирование полученной смеси путем механического перемешивания осуществляют при температуре 15-30°С до образования геля. A method of producing lithium iron phosphate, comprising mixing in a stoichiometric ratio a compound of iron with an aqueous solution containing lithium and phosphate ions in the presence of a carbon-containing substance, activating the resulting mixture and subsequent heat treatment of the reaction product, characterized in that the iron compound is used iron oxide powder with an oxidation state of iron in the range + 2.03 ... +2.2 with a particle size of up to 125 microns, mixing it with an aqueous solution of lithium dihydrogen phosphate concentration of 30-57 wt.%, and tivirovanie mixture obtained by the mechanical mixing is carried out at a temperature of 15-30 ° C to form a gel.
RU2013132124/05A 2013-07-11 2013-07-11 Method for obtaining lithium-iron-phosphate RU2585646C2 (en)

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RU2013132124/05A RU2585646C2 (en) 2013-07-11 2013-07-11 Method for obtaining lithium-iron-phosphate

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RU2013132124A true RU2013132124A (en) 2015-01-20
RU2585646C2 RU2585646C2 (en) 2016-05-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113044820A (en) * 2021-04-28 2021-06-29 四川思特瑞锂业有限公司 Method for producing battery-grade lithium dihydrogen phosphate from crude lithium salt

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7390472B1 (en) * 2002-10-29 2008-06-24 Nei Corp. Method of making nanostructured lithium iron phosphate—based powders with an olivine type structure
DE10353266B4 (en) * 2003-11-14 2013-02-21 Süd-Chemie Ip Gmbh & Co. Kg Lithium iron phosphate, process for its preparation and its use as electrode material
CN102186768B (en) * 2008-10-22 2013-08-21 株式会社Lg化学 Lithium iron phosphate having an olivine structure, and preparation method thereof
CN101901892A (en) * 2009-05-26 2010-12-01 上海比亚迪有限公司 Lithium-ion secondary battery anode and lithium-ion secondary battery
RU2424599C1 (en) * 2010-06-08 2011-07-20 Государственное образовательное учреждение высшего профессионального образования "Московский энергетический институт (технический университет)" (ГОУВПО "МЭИ(ТУ)") Manufacturing method of active mass of cathode of lithium current source
RU2444815C1 (en) * 2010-08-27 2012-03-10 Учреждение Российской академии наук Институт химии твердого тела и механохимии Сибирского отделения РАН (ИХТТМ СО РАН) METHOD TO PRODUCE HIGHLY DISPERSED CATHODE MATERIALS LixFeyMzPO4/C WITH OLIVINE STRUCTURE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113044820A (en) * 2021-04-28 2021-06-29 四川思特瑞锂业有限公司 Method for producing battery-grade lithium dihydrogen phosphate from crude lithium salt

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Effective date: 20170712