Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials

Wang Qingsheng; Pavel Novikov; Anadoli Popovich; Yang Zhelong; Yu Yao; Okonov Leonid

doi:doi:10.11648/j.am.20221101.13

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Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials

Wang Qingsheng, Pavel Novikov, Anadoli Popovich, Yang Zhelong, Yu Yao, Okonov Leonid

Published in Advances in Materials (Volume 11, Issue 1)

Received: 15 December 2021 Accepted: 25 December 2021 Published: 23 March 2022

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Abstract

The lithium ferrous silicate (Li₂FeSiO₄) has high theoretical capacity of 330 mAh/g, abundant raw material resources, stable working voltage, excellent thermal stability of Si-O bond, environmental protection and low cost, and has become one of the attractive cathode materials in high-energy lithium batteries. However, the conductivity of Li₂FeSiO₄ material itself is poor, and the ionic conductivity is low, so improving the conductivity and Li⁺ diffusion coefficient of the material has become the focus of research. In this paper, Li₂FeSiO₄ material was synthesized by the combination of sol-gel method and solid-state sintering method, and the nano-material and metal ion doping were realized by liquid-phase grinding method, which increased the specific surface area and conductivity of the material and increased the specific energy of the material. XRD, TGDSC, particle size analysis and electrochemical capacity test show that the specific capacity of the initial Li₂FeSiO₄ material synthesized in solid phase is 120 mAh/g, and the capacity of the nano-treated Li₂FeSiO₄ material reaches 140mah/g; The Li₂Fe_0.5Mn_0.5SiO₄ material obtained by Mn doping has a capacity of 160mah/g; The volume of Li₂Fe_0.5Mn_0.45Ti_0.05SiO₄ synthesized by adding metal Ti is increased to 195mah/g; The electrical conductivity of Li₂Fe_0.5Mn_0.5Si_0.975V_0.025O₄+C synthesized by doping v and c can be significantly improved, and the discharge capacity can reach about 200mAh/g. In the liquid phase grinding of the mixture of ethanol and acetone, it was found that the tautomers of alcohol and ketone were in the dynamic equilibrium of ketone and enol, and acetone met positively charged metal ions to form stable metal salts, which improved the stability of the material.

Published in	Advances in Materials (Volume 11, Issue 1)
DOI	10.11648/j.am.20221101.13
Page(s)	20-29
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Lithium Ferrous Silicate, Solid Phase Synthesis, Nanocrystallization, Liquid Phase Grinding, Ketoenolic Dynamic Equilibrium, Metal Ion Doping

References

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APA Style

Wang Qingsheng, Pavel Novikov, Anadoli Popovich, Yang Zhelong, Yu Yao, et al. (2022). Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials. Advances in Materials, 11(1), 20-29. https://doi.org/10.11648/j.am.20221101.13

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ACS Style

Wang Qingsheng; Pavel Novikov; Anadoli Popovich; Yang Zhelong; Yu Yao, et al. Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials. Adv. Mater. 2022, 11(1), 20-29. doi: 10.11648/j.am.20221101.13

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AMA Style

Wang Qingsheng, Pavel Novikov, Anadoli Popovich, Yang Zhelong, Yu Yao, et al. Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials. Adv Mater. 2022;11(1):20-29. doi: 10.11648/j.am.20221101.13

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@article{10.11648/j.am.20221101.13,
  author = {Wang Qingsheng and Pavel Novikov and Anadoli Popovich and Yang Zhelong and Yu Yao and Okonov Leonid},
  title = {Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials},
  journal = {Advances in Materials},
  volume = {11},
  number = {1},
  pages = {20-29},
  doi = {10.11648/j.am.20221101.13},
  url = {https://doi.org/10.11648/j.am.20221101.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20221101.13},
  abstract = {The lithium ferrous silicate (Li2FeSiO4) has high theoretical capacity of 330 mAh/g, abundant raw material resources, stable working voltage, excellent thermal stability of Si-O bond, environmental protection and low cost, and has become one of the attractive cathode materials in high-energy lithium batteries. However, the conductivity of Li2FeSiO4 material itself is poor, and the ionic conductivity is low, so improving the conductivity and Li+ diffusion coefficient of the material has become the focus of research. In this paper, Li2FeSiO4 material was synthesized by the combination of sol-gel method and solid-state sintering method, and the nano-material and metal ion doping were realized by liquid-phase grinding method, which increased the specific surface area and conductivity of the material and increased the specific energy of the material. XRD, TGDSC, particle size analysis and electrochemical capacity test show that the specific capacity of the initial Li2FeSiO4 material synthesized in solid phase is 120 mAh/g, and the capacity of the nano-treated Li2FeSiO4 material reaches 140mah/g; The Li2Fe0.5Mn0.5SiO4 material obtained by Mn doping has a capacity of 160mah/g; The volume of Li2Fe0.5Mn0.45Ti0.05SiO4 synthesized by adding metal Ti is increased to 195mah/g; The electrical conductivity of Li2Fe0.5Mn0.5Si0.975V0.025O4+C synthesized by doping v and c can be significantly improved, and the discharge capacity can reach about 200mAh/g. In the liquid phase grinding of the mixture of ethanol and acetone, it was found that the tautomers of alcohol and ketone were in the dynamic equilibrium of ketone and enol, and acetone met positively charged metal ions to form stable metal salts, which improved the stability of the material.},
 year = {2022}
}

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TY  - JOUR
T1  - Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials
AU  - Wang Qingsheng
AU  - Pavel Novikov
AU  - Anadoli Popovich
AU  - Yang Zhelong
AU  - Yu Yao
AU  - Okonov Leonid
Y1  - 2022/03/23
PY  - 2022
N1  - https://doi.org/10.11648/j.am.20221101.13
DO  - 10.11648/j.am.20221101.13
T2  - Advances in Materials
JF  - Advances in Materials
JO  - Advances in Materials
SP  - 20
EP  - 29
PB  - Science Publishing Group
SN  - 2327-252X
UR  - https://doi.org/10.11648/j.am.20221101.13
AB  - The lithium ferrous silicate (Li2FeSiO4) has high theoretical capacity of 330 mAh/g, abundant raw material resources, stable working voltage, excellent thermal stability of Si-O bond, environmental protection and low cost, and has become one of the attractive cathode materials in high-energy lithium batteries. However, the conductivity of Li2FeSiO4 material itself is poor, and the ionic conductivity is low, so improving the conductivity and Li+ diffusion coefficient of the material has become the focus of research. In this paper, Li2FeSiO4 material was synthesized by the combination of sol-gel method and solid-state sintering method, and the nano-material and metal ion doping were realized by liquid-phase grinding method, which increased the specific surface area and conductivity of the material and increased the specific energy of the material. XRD, TGDSC, particle size analysis and electrochemical capacity test show that the specific capacity of the initial Li2FeSiO4 material synthesized in solid phase is 120 mAh/g, and the capacity of the nano-treated Li2FeSiO4 material reaches 140mah/g; The Li2Fe0.5Mn0.5SiO4 material obtained by Mn doping has a capacity of 160mah/g; The volume of Li2Fe0.5Mn0.45Ti0.05SiO4 synthesized by adding metal Ti is increased to 195mah/g; The electrical conductivity of Li2Fe0.5Mn0.5Si0.975V0.025O4+C synthesized by doping v and c can be significantly improved, and the discharge capacity can reach about 200mAh/g. In the liquid phase grinding of the mixture of ethanol and acetone, it was found that the tautomers of alcohol and ketone were in the dynamic equilibrium of ketone and enol, and acetone met positively charged metal ions to form stable metal salts, which improved the stability of the material.
VL  - 11
IS  - 1
ER  -

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Author Information

Wang Qingsheng

Technology Department, Zhejiang Changxing Sino-Russian Institute of New Energy Materials Technology, Changxing, China
Pavel Novikov

Technology Department, Zhejiang Changxing Sino-Russian Institute of New Energy Materials Technology, Changxing, China
Anadoli Popovich

Technology Department, Peter the Great Polytechnic University, St. Petersburg, Russia
Yang Zhelong

Technology Department, Zhejiang Changxing Sino-Russian Institute of New Energy Materials Technology, Changxing, China
Yu Yao

Technology Department, Zhejiang Changxing Sino-Russian Institute of New Energy Materials Technology, Changxing, China
Okonov Leonid

Technology Department, Peter the Great Polytechnic University, St. Petersburg, Russia

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APA Style

Wang Qingsheng, Pavel Novikov, Anadoli Popovich, Yang Zhelong, Yu Yao, et al. (2022). Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials. Advances in Materials, 11(1), 20-29. https://doi.org/10.11648/j.am.20221101.13

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ACS Style

Wang Qingsheng; Pavel Novikov; Anadoli Popovich; Yang Zhelong; Yu Yao, et al. Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials. Adv. Mater. 2022, 11(1), 20-29. doi: 10.11648/j.am.20221101.13

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AMA Style

Wang Qingsheng, Pavel Novikov, Anadoli Popovich, Yang Zhelong, Yu Yao, et al. Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials. Adv Mater. 2022;11(1):20-29. doi: 10.11648/j.am.20221101.13

Copy | Download

@article{10.11648/j.am.20221101.13,
  author = {Wang Qingsheng and Pavel Novikov and Anadoli Popovich and Yang Zhelong and Yu Yao and Okonov Leonid},
  title = {Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials},
  journal = {Advances in Materials},
  volume = {11},
  number = {1},
  pages = {20-29},
  doi = {10.11648/j.am.20221101.13},
  url = {https://doi.org/10.11648/j.am.20221101.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20221101.13},
  abstract = {The lithium ferrous silicate (Li2FeSiO4) has high theoretical capacity of 330 mAh/g, abundant raw material resources, stable working voltage, excellent thermal stability of Si-O bond, environmental protection and low cost, and has become one of the attractive cathode materials in high-energy lithium batteries. However, the conductivity of Li2FeSiO4 material itself is poor, and the ionic conductivity is low, so improving the conductivity and Li+ diffusion coefficient of the material has become the focus of research. In this paper, Li2FeSiO4 material was synthesized by the combination of sol-gel method and solid-state sintering method, and the nano-material and metal ion doping were realized by liquid-phase grinding method, which increased the specific surface area and conductivity of the material and increased the specific energy of the material. XRD, TGDSC, particle size analysis and electrochemical capacity test show that the specific capacity of the initial Li2FeSiO4 material synthesized in solid phase is 120 mAh/g, and the capacity of the nano-treated Li2FeSiO4 material reaches 140mah/g; The Li2Fe0.5Mn0.5SiO4 material obtained by Mn doping has a capacity of 160mah/g; The volume of Li2Fe0.5Mn0.45Ti0.05SiO4 synthesized by adding metal Ti is increased to 195mah/g; The electrical conductivity of Li2Fe0.5Mn0.5Si0.975V0.025O4+C synthesized by doping v and c can be significantly improved, and the discharge capacity can reach about 200mAh/g. In the liquid phase grinding of the mixture of ethanol and acetone, it was found that the tautomers of alcohol and ketone were in the dynamic equilibrium of ketone and enol, and acetone met positively charged metal ions to form stable metal salts, which improved the stability of the material.},
 year = {2022}
}

Copy | Download

TY  - JOUR
T1  - Studies on Synthesis and Electrochemical Properties of Lithium Ferrous Silicate Cathode Materials
AU  - Wang Qingsheng
AU  - Pavel Novikov
AU  - Anadoli Popovich
AU  - Yang Zhelong
AU  - Yu Yao
AU  - Okonov Leonid
Y1  - 2022/03/23
PY  - 2022
N1  - https://doi.org/10.11648/j.am.20221101.13
DO  - 10.11648/j.am.20221101.13
T2  - Advances in Materials
JF  - Advances in Materials
JO  - Advances in Materials
SP  - 20
EP  - 29
PB  - Science Publishing Group
SN  - 2327-252X
UR  - https://doi.org/10.11648/j.am.20221101.13
AB  - The lithium ferrous silicate (Li2FeSiO4) has high theoretical capacity of 330 mAh/g, abundant raw material resources, stable working voltage, excellent thermal stability of Si-O bond, environmental protection and low cost, and has become one of the attractive cathode materials in high-energy lithium batteries. However, the conductivity of Li2FeSiO4 material itself is poor, and the ionic conductivity is low, so improving the conductivity and Li+ diffusion coefficient of the material has become the focus of research. In this paper, Li2FeSiO4 material was synthesized by the combination of sol-gel method and solid-state sintering method, and the nano-material and metal ion doping were realized by liquid-phase grinding method, which increased the specific surface area and conductivity of the material and increased the specific energy of the material. XRD, TGDSC, particle size analysis and electrochemical capacity test show that the specific capacity of the initial Li2FeSiO4 material synthesized in solid phase is 120 mAh/g, and the capacity of the nano-treated Li2FeSiO4 material reaches 140mah/g; The Li2Fe0.5Mn0.5SiO4 material obtained by Mn doping has a capacity of 160mah/g; The volume of Li2Fe0.5Mn0.45Ti0.05SiO4 synthesized by adding metal Ti is increased to 195mah/g; The electrical conductivity of Li2Fe0.5Mn0.5Si0.975V0.025O4+C synthesized by doping v and c can be significantly improved, and the discharge capacity can reach about 200mAh/g. In the liquid phase grinding of the mixture of ethanol and acetone, it was found that the tautomers of alcohol and ketone were in the dynamic equilibrium of ketone and enol, and acetone met positively charged metal ions to form stable metal salts, which improved the stability of the material.
VL  - 11
IS  - 1
ER  -

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