Temperature-dependent oxygen behavior of LixNi0.5Mn1.5O4 cathode material for lithium battery

Li-ion battery (LIB) has been an essential energy storage technology for powering advanced portable electronics. Now, the use of LIB has been extended to electric vehicles and grid-scaleThe quest for high energy density and high power density electrode materials for lithium-ion batteries has been intensified to meet strongly growing demand for powering electric vehicles. Conventional layered oxides such as Co-rich LiCoO 2 and Ni-rich Li(Ni x Mn y Co z )O 2 that rely on only transition metal redox reaction have been faced with growing constraints due to soaring price on cobalt. Therefore, Mn-rich electrode materials excluding cobalt would be desirable with respect to available resources and low cost. Here, the strategy of achieving both high energy density and high power density in Mn-rich electrode materials by controlling the solubility of atoms between phases in a composite is reported. The resulting Mn-rich material that is composed of defective spinel phase and partially cation-disordered layered phase can achieve the highest energy density, ≈1100 W h kg −1 with superior power capability up to 10C rate (3 A g −1 ) among other reported Mn-rich materials. This approach provides new opportunities to design Mn-rich electrode materials that can achieve high energy density and high power density for Li-ion batteries.energy storage systems (ESS). Especially, large-scale energy storage systems have become a key player for transformational changes in our society by deploying smart grids that can make the consumption and distribution of energy efficient and by increasing the use of renewable resources such as solar and wind energy. For developing efficient large-scale energy storage systems, the cost-effective electrode materials with high energy density for Li-ion batteries are necessary. [1] However, most of commercialized Li-ion cathode materials are based on only a few transition metals such as Co and Ni, which is electroactive in layered electrode materials such as LiCoO 2 and Ni-rich Li(Ni, Mn, Co)O 2 , causing constraints on their resources and availability. To decrease this strong dependence of electrode materials on Co or Ni, high capacity electrode materials that are based on cheap and abundant raw materials are urgently needed. One of the most promising approaches for this is the replacement of Co or Ni with cheap and abundant Mn such as Mn-rich electrode materials that can contain more than 80% Mn in the total transition metal ions. [2] Adv. Energy

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Controlled Atomic Solubility in Mn‐Rich Composite Material to Achieve Superior Electrochemical Performance for Li‐Ion Batteries

Lee

Zhang

Kim

et al. 2019

Advanced Energy Materials

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Nanocomposite Li- and Mn-rich spinel cathodes characterized with a green, aqueous binder system

Brandt,

Temeche,

Tuokkola

et al. 2024

Chemical Engineering Journal

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Study on oxygen deficiency in spinel LiNi0.5Mn1.5O4 and its Fe and Cr-doped compounds

Liu

Zhang

et al. 2017

Journal of Alloys and Compounds

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Temperature-dependent oxygen behavior of LixNi0.5Mn1.5O4 cathode material for lithium battery

Cited by 5 publications

References 38 publications

Controlled Atomic Solubility in Mn‐Rich Composite Material to Achieve Superior Electrochemical Performance for Li‐Ion Batteries

Controlled Atomic Solubility in Mn‐Rich Composite Material to Achieve Superior Electrochemical Performance for Li‐Ion Batteries

Nanocomposite Li- and Mn-rich spinel cathodes characterized with a green, aqueous binder system

Study on oxygen deficiency in spinel LiNi0.5Mn1.5O4 and its Fe and Cr-doped compounds

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