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Enhancing the high rate capability and cycling stability of LiMn2O4 by coating of solid-state electrolyte LiNbO3

Journal Article


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Abstract


  • To study the influence of solid state electrolyte coating layers on the performance

    of cathode materials for lithium-ion batteries in combination with organic liquid electrolyte,

    LiNbO3 coated Li1.08Mn1.92O4 cathode materials were synthesized by using a facile solid-state reaction method. The 0.06LiNbO3-0.97Li1.08Mn1.92O4 cathode exhibited an initial discharge capacity of 125 mAh g-1, retaining a capacity of 119 mAh g-1, at 25 oC, while at 55 oC, it exhibited an initial discharge capacity of 130 mAh g-1, retaining a capacity of 111 mAh g-1, both at a current density of 0.5 C (where 1 C is 148 mAh g-1). Very good rate capability has been demonstrated, with the 0.06LiNbO3-0.97Li1.08Mn1.92O4 cathode showing more than 85% capacity at the rate of 50 C compared with the capacity at 0.5 C. The 0.06LiNbO3-0.97Li1.08Mn1.92O4 cathode showed a high lithium diffusion coefficient (1.6 × 10-10 cm2 s-1 at 55 oC), and low

    apparent activation energy (36.9 kJ mol-1). The solid state electrolyte coating layer is effective for preventing Mn dissolution and maintaining the high ionic conductivity between the electrode and the organic liquid electrolyte, which may improve the design and construction of nextgeneration large-scale lithium-ion batteries with high power and safety.

Publication Date


  • 2014

Citation


  • Zhang, Z., Chou, S., Gu, Q., Liu, H., Li, H., Ozawa, K. & Wang, J. (2014). Enhancing the high rate capability and cycling stability of LiMn2O4 by coating of solid-state electrolyte LiNbO3. ACS Applied Materials and Interfaces, 6 (24), 22155-22165.

Scopus Eid


  • 2-s2.0-84919935095

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2295&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1294

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 22155

End Page


  • 22165

Volume


  • 6

Issue


  • 24

Place Of Publication


  • United States

Abstract


  • To study the influence of solid state electrolyte coating layers on the performance

    of cathode materials for lithium-ion batteries in combination with organic liquid electrolyte,

    LiNbO3 coated Li1.08Mn1.92O4 cathode materials were synthesized by using a facile solid-state reaction method. The 0.06LiNbO3-0.97Li1.08Mn1.92O4 cathode exhibited an initial discharge capacity of 125 mAh g-1, retaining a capacity of 119 mAh g-1, at 25 oC, while at 55 oC, it exhibited an initial discharge capacity of 130 mAh g-1, retaining a capacity of 111 mAh g-1, both at a current density of 0.5 C (where 1 C is 148 mAh g-1). Very good rate capability has been demonstrated, with the 0.06LiNbO3-0.97Li1.08Mn1.92O4 cathode showing more than 85% capacity at the rate of 50 C compared with the capacity at 0.5 C. The 0.06LiNbO3-0.97Li1.08Mn1.92O4 cathode showed a high lithium diffusion coefficient (1.6 × 10-10 cm2 s-1 at 55 oC), and low

    apparent activation energy (36.9 kJ mol-1). The solid state electrolyte coating layer is effective for preventing Mn dissolution and maintaining the high ionic conductivity between the electrode and the organic liquid electrolyte, which may improve the design and construction of nextgeneration large-scale lithium-ion batteries with high power and safety.

Publication Date


  • 2014

Citation


  • Zhang, Z., Chou, S., Gu, Q., Liu, H., Li, H., Ozawa, K. & Wang, J. (2014). Enhancing the high rate capability and cycling stability of LiMn2O4 by coating of solid-state electrolyte LiNbO3. ACS Applied Materials and Interfaces, 6 (24), 22155-22165.

Scopus Eid


  • 2-s2.0-84919935095

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2295&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1294

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 22155

End Page


  • 22165

Volume


  • 6

Issue


  • 24

Place Of Publication


  • United States