Additive Co3O4-contained lithium-sulfur battery positive electrode material and preparation method

A lithium-sulfur battery and cathode material technology, which is applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of poor battery cycle performance and low utilization rate of electrode active materials, so as to prolong battery life, improve electrochemical performance, The effect of inhibiting oxidative activity
CN105680016AActive Publication Date: 2016-06-15XIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN UNIV OF TECH
Publication Date
2016-06-15

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Abstract

The invention discloses an additive Co3O4-contained lithium-sulfur battery positive electrode material. The positive electrode material is prepared from KS-6, Co3O4 and sulfur in a doping manner, wherein Co3O4 and sulfur are uniformly filled in the KS-6 laminated layer; the mass ratio of KS-6 to Co3O4 is 1:0.1-0.25; and the mass ratio of Co3O4-KS-6 to sulfur is 1:1-2. The invention also discloses a preparation method for the additive Co3O4-contained lithium-sulfur battery positive electrode material; according to the preparation method, the raw materials are subjected to wet mixing and high-temperature calcining to obtain the Co3O4-KS-6 composite product; the obtained product is mixed with sulfur and grinded to obtain the lithium-sulfur battery positive electrode material; the preparation method is low in cost and simple to operate; meanwhile, the production efficiency can be improved easily, and industrial production can be facilitated; and in addition, the prepared positive electrode composite material is high in specific discharge capacity, high in cycling stability and can be widely applied to the energy storage field as the lithium-sulfur battery positive electrode material.
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Description

technical field

[0001] The invention belongs to the technical field of lithium-sulfur battery preparation, and relates to a battery containing additive Co 3 o 4 Lithium-sulfur battery positive electrode material, the present invention also relates to this kind containing additive Co 3 o 4 Preparation method of lithium-sulfur battery cathode material. Background technique

[0002] At present, fossil fuels play a dominant role in human energy needs, however, the resources of fossil fuels are limited, and the burning of fossil fuels causes serious environmental pollution. Therefore, the development of clean and renewable energy, such as wind energy and solar energy, is imminent, and these energy sources need to be transformed by electrochemical energy storage before they can be used by people, which requires reliable, low-cost, and environmentally friendly large-scale energy Storage System. The theoretical specific capacity of elemental sulfur is 1675mAh / g, and the theoret...

Claims

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