One-step calcination synthesis of interface-coherent crystallized and surface-passivated LiNi0.5Mn1.5O4 for high-voltage lithium-ion battery

Xu, Min; Sheng, Bifu; Cheng, Yong; Lu, Junjie; Chen, Minfeng; Wang, Peng; Liu, Bo; Chen, Jizhang; Han, Xiang; Wang, Ming-Sheng; Shi, Siqi

doi:10.1007/s12274-023-6361-z

Nano Res.

2023

DOI: 10.1007/s12274-023-6361-z

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One-step calcination synthesis of interface-coherent crystallized and surface-passivated LiNi0.5Mn1.5O4 for high-voltage lithium-ion battery

Min Xu,

Bifu Sheng,

Yong Cheng

et al.

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2024

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Cited by 7 publications

References 51 publications

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Electrolyte Additive Therapy Realizes Simultaneous Ni and Mn Redox for Spinel LiNi_0.5Mn_1.5O₄ Cathode at 2.3–4.95 V

Hai,

Gao,

Chen

et al. 2024

Adv Funct Materials

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The development of cobalt‐free, high‐energy‐density cathode materials is an important prerequisite for the commercialization of the next generation of high‐energy‐density, cost‐effective lithium batteries. Co‐free spinel LiNi0.5Mn1.5O4 (LNMO) with simultaneous Ni and Mn multi‐cation redox reactions possesses a high theoretical specific capacity of 230 mAh g−1 and a theoretical energy density of 865 Wh kg−1. Unfortunately, LNMO cycled at 2.3–4.95 V suffered from severe interfacial dynamic evolution and electrolyte decomposition, leading to uncontrollable transition metal dissolution and a rapid decrease of reversible specific capacity. Here, It is demonstrated that the addition of an appropriate amount of lithium difluorophosphate (LiDFP) to a common carbonate‐based electrolyte can achieve stable cycling of LNMO in the voltage range of 2.3–4.95 V. The LNMO‐Li cell retained 82.8% of its initial capacity (175.2 mAh g−1) after 300 cycles. The improved cycle performance is attributed to the robust interface formed by the decomposition of LiDFP, which inhibits the dissolution of transition metals and the continued decomposition of the electrolyte. This work provides important insights for the development of the next generation of high‐energy‐density cobalt‐free lithium batteries.

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Electrolyte Additive Therapy Realizes Simultaneous Ni and Mn Redox for Spinel LiNi_0.5Mn_1.5O₄ Cathode at 2.3–4.95 V

Hai,

Gao,

Chen

et al. 2024

Adv Funct Materials

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Dextran Sulfate Sodium as Multifunctional Aqueous Binder Stabilizes Spinel LiMn₂O₄ for Lithium Ion Batteries

Zhong,

Huang,

Zhang

et al. 2024

Adv Funct Materials

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Spinel LiMn2O4 (LMO) has several beneficial properties for utilization as a cathode material for lithium‐ion batteries, including a high operating voltage, thermal stability, low cost, and eco‐friendliness. However, its application is limited by capacity fading due to structural transformation and manganese dissolution upon cycling. A method is proposed to resolve these two issues, using dextran sulfate sodium (DSS) as an aqueous binder to coat the LMO surface. DSS stabilizes the surface/interface structure of LMO by incorporating Na into the interstitial 16c sites, creating a uniform surface coating layer and promoting the formation of a homogeneous and stable cathode‐electrolyte interphase derived from the sulfate groups in DSS and enriched with LiF/LiSOxF. The aqueous DSS binder effectively suppresses the surface degradation and Mn dissolution of spinel LMO. The LMO electrode based on DSS exhibits superior cycling stability and rate performance compared with those of electrodes using the conventional poly(vinylidene difluoride) binder. These findings demonstrate the potential value of DSS as a multifunctional aqueous binder in stabilizing spinel LMO for lithium‐ion batteries.

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Boosting interface compatibility of high-voltage LiNi0.5Mn1.5O4 cathode materials with an ionic-conductive Li0.33La0.56TiO3 coating

Tao,

Yan,

Yang

et al. 2024

Applied Surface Science

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One-step calcination synthesis of interface-coherent crystallized and surface-passivated LiNi0.5Mn1.5O4 for high-voltage lithium-ion battery

Cited by 7 publications

References 51 publications

Electrolyte Additive Therapy Realizes Simultaneous Ni and Mn Redox for Spinel LiNi_0.5Mn_1.5O₄ Cathode at 2.3–4.95 V

Electrolyte Additive Therapy Realizes Simultaneous Ni and Mn Redox for Spinel LiNi_0.5Mn_1.5O₄ Cathode at 2.3–4.95 V

Dextran Sulfate Sodium as Multifunctional Aqueous Binder Stabilizes Spinel LiMn₂O₄ for Lithium Ion Batteries

Boosting interface compatibility of high-voltage LiNi0.5Mn1.5O4 cathode materials with an ionic-conductive Li0.33La0.56TiO3 coating

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One-step calcination synthesis of interface-coherent crystallized and surface-passivated LiNi0.5Mn1.5O4 for high-voltage lithium-ion battery

Cited by 7 publications

References 51 publications

Electrolyte Additive Therapy Realizes Simultaneous Ni and Mn Redox for Spinel LiNi0.5Mn1.5O4 Cathode at 2.3–4.95 V

Electrolyte Additive Therapy Realizes Simultaneous Ni and Mn Redox for Spinel LiNi0.5Mn1.5O4 Cathode at 2.3–4.95 V

Dextran Sulfate Sodium as Multifunctional Aqueous Binder Stabilizes Spinel LiMn2O4 for Lithium Ion Batteries

Boosting interface compatibility of high-voltage LiNi0.5Mn1.5O4 cathode materials with an ionic-conductive Li0.33La0.56TiO3 coating

Contact Info

Product

Resources

About

Electrolyte Additive Therapy Realizes Simultaneous Ni and Mn Redox for Spinel LiNi_0.5Mn_1.5O₄ Cathode at 2.3–4.95 V

Electrolyte Additive Therapy Realizes Simultaneous Ni and Mn Redox for Spinel LiNi_0.5Mn_1.5O₄ Cathode at 2.3–4.95 V

Dextran Sulfate Sodium as Multifunctional Aqueous Binder Stabilizes Spinel LiMn₂O₄ for Lithium Ion Batteries