Journal of Industrial Technology (산업기술연구)

Kangwon National University, Institute of Industrial Technology (강원대학교 산업기술연구소)
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Development of Advanced Polymeric Binders for High Voltage LiNi0.5Mn1.5O4 cathodes in Lithium-ion batteries

고전압 LiNi0.5Mn1.5O4 양극 고성능 바인더 개발 연구

  • Dae Hui Yun (Small Battery Development office, SAMSUNG SDI CO. LTD) ;
  • Sunghun Choi (Department of Battery Convergence Engineering, Kangwon National University)
  • Received : 2023.12.18
  • Accepted : 2023.12.29
  • Published : 2023.12.31
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Abstract

Spinel LiNi0.5Mn1.5O4 (LNMO) has been considered as one of most promising cathode material, because of its low-cost and competitive energy density. However, 4.7V vs. Li/Li+ of high operating potential facilitates electrolyte degradation on cathode-electrolyte interface during charge-discharge process. In particular, commercial polyvinylidene fluoride (PVDF) is not sutaible for LNMO cathode binder because its weak van der waals force induces thick and non-uniform coverage on the cathode surface. In this review, we study high performance binders for LNMO cathode, which forms uniform coating layer to prevent direct contact between electrolyte and LNMO particle as well as modifying high quality cathode electrolyte interphase, improved cell performace.

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References

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