Sodium-base lithium ion secondary battery anode material and method of manufacturing the same

A secondary battery and positive electrode material technology, applied in the direction of battery electrodes, circuits, electrical components, etc.

Inactive Publication Date: 2009-02-18
JILIN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, subject to Li-ion batteries are based on Li + Influenced by the traditional concept of reversible insertion and extraction of ions, for a long time people's research on lithium-ion battery cathode materials has been mostly limited to the scope of lithium-containing compounds.

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  • Sodium-base lithium ion secondary battery anode material and method of manufacturing the same
  • Sodium-base lithium ion secondary battery anode material and method of manufacturing the same
  • Sodium-base lithium ion secondary battery anode material and method of manufacturing the same

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Embodiment 1

[0020] The sources of the reaction raw materials are as follows: sodium fluoride (NaF), produced from Tianjin No. 3 Chemical Reagent Factory, ammonium metavanadate (NH4 VO 3 ), produced by China Pharmaceutical Group Shanghai Chemical Reagent Company; ammonium hydrogen phosphate (NH 4 h 2 PO 4 ), produced from Tianjin Damao Chemical Reagent Factory; citric acid (C 6 h 8 o 7 ·H 2 O), produced in Beijing Chemical Plant.

[0021] Select the above NaF, NH 4 VO 3 , NH4H 2 PO 4 and citric acid as raw reagents. NaF, NH 4 VO 3 , and NH4H 2 PO 4 The molar dosage is 0.015mol, 0.010mol, 0.010mol respectively, corresponding to Na + :V 5+ :PO 4 3- :F - The molar ratio is 3:2:2:3.

[0022] Add the above raw materials to 120ml of distilled water, and at a constant temperature of 80°C, add 2.10g of citric acid (equivalent to a molar ratio of citric acid to ammonium metavanadate of 0.8:1) while stirring, and stir until a paste gel forms. acid complex.

[0023] Put the citr...

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Abstract

The invention relates to an anode material of a sodium lithium ion secondary battery and citrate preparation method thereof, the material has a molecular formula of Na3V2(PO4)2F3, while the space group is P42/mnm, belonging to tetragonal system with cell parameter a = 9.047, c = 10.705. By using NaF, NH4VO3, NH4H2PO4 as raw materials, adding saturated citrate solution via stirring, in order to prepare citrate ligand; then drying and milling into powder for preburing; pressing the powder, and buring in a turbular furnace loaded with nitrogen at a temperature of 600 to 700 centigrade, finally cooling naturally. The synthesized material can charge and discharge between 3.0 to 4.5 volts, with primary charging capacity of 126mAh/g, discharging capacity of 123mAh/g, efficiency of 97.6%, excellent circulation ability, having characteristics of single-phase, excellent crystallinity, small particle size and stable structure.

Description

technical field [0001] The invention belongs to a novel lithium ion battery cathode material and a preparation method thereof, in particular to a sodium-based lithium ion secondary battery cathode material and a citrate method preparation method thereof. Background technique [0002] The rapid development of modern industry has increased the human demand for energy. At present, 85% of the energy used in the world comes from fossil raw materials (coal, oil, natural gas, etc.), these raw materials are non-renewable, and the environmental pollution caused by them is also increasing. Therefore, the research and development of green energy and its materials is of great significance for realizing the sustainable development strategy in the 21st century, alleviating the energy crisis and reducing the pressure of environmental pollution. Lithium-ion battery, as a recyclable and efficient green new energy, is an important technical approach to comprehensively alleviate energy, resou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58B22F3/16
CPCY02E60/10
Inventor 姜涛魏英进陈岗王春忠陈红
Owner JILIN UNIV
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