Cd|KOH|NiOOH

Zn|NH4CI|MnO2

Li|LiClO4|MnO2

Pb|H2SO4|PbO2

H2|KOH|O2

Peculiarities of Obtaining and Electrochemical Properties of Lithium-Ion Battery Cathode Materials Based on Iron(II)-Lithium Orthosilicate

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).

Various strategies for the synthesis of promising electrode materials for lithium-ion battery (LIB) based on iron(II)-lithium orthosilicate (Li2FeSiO4) using widely distributed, environmentally friendly and inexpensive starting materials are considered. The materials obtained are multicomponent electroactive composites that include, in addition to the main lithium accumulating component, also auxiliary structure-forming and electrically conductive components based on the products of the pyrolytic decomposition of organic compounds. The structural and morphological features of the obtained LIB’s materials were studied using X-ray diffraction, scanning electron microscopy, laser particle size distribution analyzer. The electrochemical properties of materials were studied by the method of constant current chronopotentiometry (galvanostatic charge-discharge). The dependence of electrochemical properties on synthesis conditions was determined. The reversible cyclic electrochemical capacity of Li2FeSiO4 electrodes reached 220 mAh/g in the initial charge-discharge cycles.

Literature

1. Goodenough J. B., Kim Y. Challenges for rechargeable batteries. J. Power Sources, 2011, vol. 196, pp. 6688–6694.

2. Deng C., Zhang S., Fu B., Yang S., Ma L. Characterization of Li2MnSiO4 and Li2FeSiO4 cathode materials synthesized via a citric acid assisted sol–gel method. Mater. Chem. Phys., 2010, vol. 120, pp. 14–17.

3. Nytén A., Abouimrane A., Armand M., Gustafsson T., Thomas J. O. Electrochemical performance of Li2FeSiO4 as a new Li-battery cathode material. Electrochem. Commun., 2005, vol. 7, pp. 156–160.

4. Tarte P., Cahay R. Synthesis and structure of a new series of Li2X(II)GeO4 and Li2X(II)SiO4 structurally related to Li3PO4. C.R. Acad. Sci. Paris, 1970, vol. 139, pp. 777–780.

5. Zheng Z., Wang Y., Zhang A., Zhang T., Cheng F., Tao Z., Chen J. Porous Li2FeSiO4/C nanocomposite as the cathode material of lithium-ion batteries. J. Power Sources, 2012, vol. 198, pp. 229–235.

6. Larsson P., Ahuja R., Nytén A., Thomas J. O. An ab initio study of the Li-ion battery cathode material Li2FeSiO4. Electrochem. Commun., 2006, vol. 8, pp. 797–800.

7. Qu L., Fang S., Yang L., Hirano S. I. Li2FeSiO4/C cathode material synthesized by template-assisted sol–gel process with Fe2O3 microsphere. J. Power Sources, 2012, vol. 217, pp. 243–247.

8. Peng Z. D., Cao Y. B., Hu G. R., Du K., Gao X. G., Xiao Z. W. Microwave synthesis of Li2FeSiO4 cathode materials for lithium-ion batteries. Chinese Chem. Lett., 2009, vol. 20, pp. 1000–1004.

9. Ivanishchev A. V., Churikov A. V., Akmaev A. S., Ushakov A. V., Ivanishcheva I. A., Gamayunova I. M., Sneha M. J., Dixit A. The Synthesis, Structure, and Electrochemical Properties of Li2FeSiO4-Based Lithium-Accumulating Electrode Material. Russ. J. Electrochem., 2017, vol. 53, pp. 302–311.

10. Wang W., Liang H., Zhang L., Savilov S. V., Ni J., Li L. Carbon nanotube directed three-dimensional porous Li2FeSiO4 composite for lithium batteries. Nano Res., 2017, vol. 10, pp. 229–237.

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