Method for preparing cathode electrode material of nanobelt-type lithium ion battery

A lithium-ion battery, cathode electrode technology, applied in the direction of battery electrodes, nanotechnology, circuits, etc., can solve the problems of research and practical application limitations, poor battery cycle performance, non-reversible process, etc., achieve no by-products, reduce interface resistance , the effect of inhibiting expansion
CN102013482AInactive Publication Date: 2011-04-13TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2011-04-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a cathode electrode material of a nanobelt-type lithium ion battery, belonging to the technical field of energy. The method comprises the following steps: preparing a MoO3 nanobelt by using a hydrothermal method, evenly blending the MoO3 nanobelt and MgCl2 solution and stirring; then performing hydrothermal treatment once again; and utilizing Mg to dope the MoO3 nanobelt. By using the method, the specific area of MoO3 is greatly improved, the transmission speeds of electrons and ions are increased, and the embedding and abjection of lithium ions are promoted, thus improving the large-current discharging performance of the material of the battery; after Mg is doped, due to the polarization of Mg, the crystal face of MoO3 is contracted, therebyinhibiting the expansion of the material during charging and discharging; meanwhile, due to the doping of Mg, Li-O keys are weaken, the interface resistance is reduced, the mobility of the lithium ions is improved and the reversible capacity and cycling performance of the material are improved; and in addition, the preparation method provided by the invention has the characteristic of simple flow, small energy consumption and the like, and is beneficial to large-scale preparation and production.
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Description

technical field

[0001] The invention belongs to the field of energy, and in particular relates to a preparation method of a cathode electrode material of a nanoribbon-shaped lithium ion battery. Background technique

[0002] The energy problem has always been one of the key factors affecting the development and changes of human society, and it has also become one of the problems that human beings must solve in the future. With the operation and development of human society, the consumption of energy is increasing, and the energy problem has become a key issue for the survival and continuation of human beings. At present, mineral energy represented by oil, coal and natural gas supports the operation of the world. However, as we all know, mineral energy materials are non-renewable energy sources, their reserves are limited, and they have also caused serious environmental problems. In this context, lithium-ion batteries have become the direction to solve these problems because...

Claims

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