The Chinese Academy of Sciences has made progress in the preparation of new anode materials for lithium-ion batteries.

The Chinese Academy of Sciences has made progress in the preparation of new anode materials for lithium-ion batteries

In recent years, nanoporous metal-organic framework (MOF) compounds have shown promising results in the adsorption and separation of gases, heterogeneous catalysis, sensors and microreactors. Good application prospects. The Light Metals and Battery Materials Group of the State Key Laboratory of Rare Earth Resources Utilization of the Changchun Institute of Applied Chemistry of the Chinese Academy of Sciences synthesized a series of metal oxides transition and their composite materials. This type of material has a high specific discharge capacity and good cycle stability. A series of research progresses have been made in the synthesis of MOF models of lithium-ion battery anode materials.
　
Researchers discovered that co-precipitation technologytation can effectively adsorb metal cations on the surface of tellurium nanowires with excellent conductivity. After adding an organic ligand solution, the ligands interact with the metal on the surface of the tellurium nanowires. The ions are coordinated to form MOF crystal nuclei, which transform into MOF crystals, and finally the tellurium nanowires are integrated in situ into the MOF. After heat treatment, multimetallic oxide nanocomposites with hierarchical porous structures can be prepared (as shown in the image above).
　
The specific capacity of this type of nanocomposite material is stable at over 956 mAhg-1 in the voltage range of 0.01-3.0 V and charged and discharged at a current density of 100 mAg-1 100 times; when the charge-discharge current density is 2000 mAg-1, the specific capacity still reaches 307 mAhg-1, which has excellent storage characteristicskage of electrochemical energy.
　
Relevant research results were published in Adv. Function. Mater., 2017, 27, 1604941-1604947; ACS Energy Lett., 2017, 2, 1564-1570; Chemical. EUR. J., 2016, 22, 1467-1474; ACS Nano, 2015, 9, 1592-1599; On the nanoscale, 2014, 6, 5509-5515 and J. Mater. Chemical. A, 2014, 2, 8048-8053 and other academic journals. This series of research work was funded by the National Natural Science Foundation of China.
　
Compounds with nanoporous metal-organic structure have good application prospects in gas adsorption and separation, heterogeneous catalysis, sensors and microreactors. The Changchun Institute of Applied Chemistry of the Chinese Academy of Sciences has developed new anodes for lithium-ion batteries. Progress has been made in material preparation research, enabling the material to have a specific discharge capacityhigher and good cycle stability. The progress of these research results will help conduct related research works in the future and enable our country to achieve new breakthroughs in this field.

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