Carbon fluoride and application thereof

A technology of fluorinated carbon and carbon fluoride, which is applied in the field of materials, can solve problems such as low conductivity that have not been effectively solved, and achieve the effect of safe and controllable reaction, high working voltage platform, and high specific capacity
CN102730663AActive Publication Date: 2012-10-17NORTHWEST INST OF NUCLEAR TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTHWEST INST OF NUCLEAR TECH
Publication Date
2012-10-17

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Abstract

The invention discloses carbon fluoride prepared by carrying out heating reaction of bamboo charcoal and a fluorination reagent in a closed container. A preparation method of carbon fluoride is characterized by heating bamboo charcoal and the fluorination reagent in the closed container for 1-20 h to obtain carbon fluoride, wherein the fluorination reagent is NF3, and the reaction temperature of the heating reaction is 300-600 DEG C. In addition, the invention further discloses an application of the carbon fluoride in being used as a lithium primary cell cathode material. The preparation method of the carbon fluoride has the advantages of simple process, high specific capacity and good safety. A lithium primary cell prepared by using the carbon fluoride provided by the invention has high working voltage platform, the discharge voltage of lithium-carbon fluoride is raised to 3.0V which is higher than the discharge voltage being 2.5V of lithium-graphite fluoride, thus the energy storage capacity of the lithium primary cell can be raised by about 20%.
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Description

technical field

[0001] The invention belongs to the technical field of materials, and in particular relates to a carbon fluoride and its application. Background technique

[0002] Power storage devices with high specific energy and long storage life are important components for civil and military communications and intelligent high-tech weapons. The specific energy of the current battery can reach 200Wh / kg-400Wh / kg, but the storage life is only 2-3 years. When the battery fails, it must be replaced, which is a huge burden on the management and maintenance of the equipment. And some systems (such as Li-SOCl 2 system, the specific energy is 350Wh / kg~400Wh / kg), there is a risk of explosion, and there is a potential safety hazard of its own. It cannot meet the needs of the development of intelligent high-tech equipment. The lithium-carbon fluoride battery system has high energy density (>500Wh / kg), slow self-discharging electrodes (the service life is more than ten years),...

Claims

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