Reversible anionic redox and spinel-layered coherent structure enable high-capacity and long-term cycling of Li-rich cathode

Li, Zhi; Li, Heng; Cao, Shuang; Guo, Wei; Liu, Jiali; Chen, Jiarui; Guo, Changmeng; Chen, Gairong; Chang, Baobao; Bai, Yiming; Wang, Xianyou

doi:10.1016/j.cej.2022.139041

Cited by 25 publications

(22 citation statements)

References 45 publications

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“…The massive growth in the electric vehicle market has catalyzed the advancement of rechargeable lithium (Li)-ion batteries. , Since the cathode electrode is limiting the energy density, cost, and safety of a Li-ion cell, increasing efforts are being devoted to developing next-generation cathode materials with acceptable performances. , Recent advances in cobalt-free materials, such as high-nickel layered oxides LiNi x M 1– x O 2 (M = Mn, Al, Ti, etc. ), Li-rich manganese (Mn)-based layered oxides, olivine LiFePO 4 , and spinel LiMn 2 O 4 , have attracted much attention with respect to developing cost-effective high-energy-density Li-ion batteries. − …”

Section: Introductionmentioning

confidence: 99%

Laser-Assisted Surface Lithium Fluoride Decoration of a Cobalt-Free High-Voltage Spinel LiNi_0.5Mn_1.5O₄ Cathode for Long-Life Lithium-Ion Batteries

Cui

Khosla

Lai

et al. 2022

ACS Appl. Mater. Interfaces

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High-voltage spinel LiNi 0.5 Mn 1.5 O 4 (LNMO) is a promising nextgeneration cathode material due to its structural stability, high operation voltage, and low cost. However, the cycle life of LNMO cells is compromised by detrimental electrode−electrolyte reactions, chemical crossover, and rapid anode degradation. Here, we demonstrate that the cycling stability of LNMO can be effectively enhanced by a high-energy laser treatment. Advanced characterizations unveil that the laser treatment induces partial decomposition of the polyvinylidene fluoride binder and formation of a surface LiF phase, which mitigates electrode−electrolyte side reactions and reduces the generation of dissolved transition-metal ions and acidic crossover species. As a result, the solid electrolyte interphase of the graphite counter electrode is thin and is composed of fewer electrolyte decomposition products. This work demonstrates the potential of laser treatment in tuning the surface chemistry of cathode materials for lithium-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Laser-Assisted Surface Lithium Fluoride Decoration of a Cobalt-Free High-Voltage Spinel LiNi_0.5Mn_1.5O₄ Cathode for Long-Life Lithium-Ion Batteries

Cui

Khosla

Lai

et al. 2022

ACS Appl. Mater. Interfaces

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“…[1][2][3] It is predicted that LIBs will be the succedaneum to fossil-fuel-based energy installations, which is beneficial to alleviating environmental pollution and reducing the resource consumption. 4,5 It is well known that cathodes play a central role in cycling performance, reversible capacity, power density and operating life, and it accounts for 30-40% of the total cost of LIBs. To meet the rising demands, there is an urgent need for high specific capacity and energy density cathode materials, which are directly associated with the driving range.…”

Section: Introductionmentioning

confidence: 99%

Construction of a nickel-rich LiNi_0.83Co_0.11Mn_0.06O₂ cathode with high stability and excellent cycle performance through interface engineering

Zhang

Zhou

et al. 2023

Mater. Chem. Front.

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“…However, the LRMC still faces all-round challenges including high first irreversible capacity, poor Coulombic efficiency, poor rate capacity, and voltage decay, which have restricted the large-scale use and industrialization of the LRMC. − Therefore, numerous scholars have made a series of important research in enhancing the performance of the LRMC. It has been found that the main failure mechanisms of the materials include lattice oxygen release, transition metal ion migration, and electrode/electrolyte interface side reactions. − …”

Section: Introductionmentioning

confidence: 99%

Lithium-Ion Conductor Li₂ZrO₃-Coated Primary Particles To Optimize the Performance of Li-Rich Mn-Based Cathode Materials

Chen

Cao

et al. 2023

ACS Appl. Mater. Interfaces

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A lithium-rich manganese-based cathode material (LRMC) is currently considered as one of the most promising next-generation materials for lithium-ion batteries, which has received much attention, but the LRMC still faces some key scientific issues to break through, such as poor rate capacity, rapid voltage, capacity decay, and low first coulomb efficiency. In this work, homogeneous Li2ZrO3 (LZO) was successfully coated on the surface of Li1.2Mn0.54Ni0.13Co0.13O2 (LRO) by molten salt-assisted sintering technology. Li2ZrO3 has good chemical and electrochemical stability, which can effectively inhibit the side reaction between electrode materials and electrolytes and reduce the dissolution of transition metal ions. Thus, the as-prepared LRO@LZO composites are expected to improve the cycling performance. It can be found that the discharge specific capacity of LRO is 271 mAh g–1 at 0.1 C, and the capacity retention rate is still 93.7% after 100 cycles at 1 C. In addition, Li2ZrO3 is an excellent lithium-ion conductor, which is prone to increasing the lithium-ion transfer rate and improving the rate capacity of LRO. Therefore, this study provides a new solution to improve the structure stability and electrochemical performance of LRMCs.

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Reversible anionic redox and spinel-layered coherent structure enable high-capacity and long-term cycling of Li-rich cathode

Cited by 25 publications

References 45 publications

Laser-Assisted Surface Lithium Fluoride Decoration of a Cobalt-Free High-Voltage Spinel LiNi_0.5Mn_1.5O₄ Cathode for Long-Life Lithium-Ion Batteries

Laser-Assisted Surface Lithium Fluoride Decoration of a Cobalt-Free High-Voltage Spinel LiNi_0.5Mn_1.5O₄ Cathode for Long-Life Lithium-Ion Batteries

Construction of a nickel-rich LiNi_0.83Co_0.11Mn_0.06O₂ cathode with high stability and excellent cycle performance through interface engineering

Lithium-Ion Conductor Li₂ZrO₃-Coated Primary Particles To Optimize the Performance of Li-Rich Mn-Based Cathode Materials

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Reversible anionic redox and spinel-layered coherent structure enable high-capacity and long-term cycling of Li-rich cathode

Cited by 25 publications

References 45 publications

Laser-Assisted Surface Lithium Fluoride Decoration of a Cobalt-Free High-Voltage Spinel LiNi0.5Mn1.5O4 Cathode for Long-Life Lithium-Ion Batteries

Laser-Assisted Surface Lithium Fluoride Decoration of a Cobalt-Free High-Voltage Spinel LiNi0.5Mn1.5O4 Cathode for Long-Life Lithium-Ion Batteries

Construction of a nickel-rich LiNi0.83Co0.11Mn0.06O2 cathode with high stability and excellent cycle performance through interface engineering

Lithium-Ion Conductor Li2ZrO3-Coated Primary Particles To Optimize the Performance of Li-Rich Mn-Based Cathode Materials

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Product

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Laser-Assisted Surface Lithium Fluoride Decoration of a Cobalt-Free High-Voltage Spinel LiNi_0.5Mn_1.5O₄ Cathode for Long-Life Lithium-Ion Batteries

Laser-Assisted Surface Lithium Fluoride Decoration of a Cobalt-Free High-Voltage Spinel LiNi_0.5Mn_1.5O₄ Cathode for Long-Life Lithium-Ion Batteries

Construction of a nickel-rich LiNi_0.83Co_0.11Mn_0.06O₂ cathode with high stability and excellent cycle performance through interface engineering

Lithium-Ion Conductor Li₂ZrO₃-Coated Primary Particles To Optimize the Performance of Li-Rich Mn-Based Cathode Materials