Low-temperature hydrothermally synthesized organic phosphonic acid lithium battery anode material LixMmR(PO3)n
A technology of organic phosphonic acid and hydrothermal synthesis, which is applied in battery electrodes, electrode manufacturing, circuits, etc., can solve the problems of lack of controllable composition and structure design, and achieve the effects of optimized charge and discharge performance, low cost, and high product yield
Inactive Publication Date: 2010-06-16
NANJING UNIV
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Abstract
The invention relates to a low-temperature hydrothermally synthesized organic phosphonic acid lithium battery anode material, and discloses a novel metal organic phosphonic acid lithium coordination compound with a composition of LixMmR(PO3)n (wherein R=an organic group, and M=a transition metal ion) as the lithium battery anode material, and the regulation and control of the composition structure of the material can be realized through changing the organic group R to optimize the deinsertion of a lithium ion in the anode material. A preparation method adopts a low-cost low-temperature low-pressure hydrothermal synthesis technology and has high yield and high purity. A phosphonic acid lithium-rhodium complex with a three-dimensional channel structure is obtained. The discharge capacity of the material for the first time reaches 82.73mAh/g, and the specific capacity is still kept at about 82mAh/g after charge and discharge for 20 times and hardly descends, which indicates that the material synthesized by the method has better charge and discharge stability.
Application Domain
Electrode manufacturing processes
Technology Topic
Charge and dischargeHydrothermal synthesis +8
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