Evolution of ternary LixSnyOz artificial cathode-electrolyte interphase (ACEI) through ALD: a surface strengthened NCM811 with enhanced electrochemical performances for Li-ion batteries

Saha, Arka; Shalev, Ortal; Maiti, Sandipan; Wang, Longlong; Akella, Sri Harsha; Schmerling, Bruria; Targin, Sarah; Tkachev, Maria; Fan, Xiulin; Noked, Malachi

doi:10.1016/j.mtener.2022.101207

Cited by 4 publications

(5 citation statements)

References 43 publications

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“…Initially, Na 0.8 Li 0.2 exhibits the lowest mean voltage, whereas after cycling, Na 0.9 Li 0.1 shows the lowest voltage increment voltage hysteresis (Figure 2e), indicating a lower polarization, high Na + ion reversibility, and a more stable crystal structure and is in agreement with the impedance outcomes. [ 52 ] The above results prove the combined usefulness of high entropy and Li substitution in the design of the cathode.…”

Section: Resultsmentioning

confidence: 62%

High‐Entropy Co‐Free O3‐Type Layered Oxyfluoride: A Promising Air‐Stable Cathode for Sodium‐Ion Batteries

et al. 2023

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Na‐ion batteries have recently emerged as a promising alternative to Li‐based batteries, driven by an ever‐growing demand for electricity storage systems. In the present work, we propose a cobalt‐free high‐capacity cathode for Na‐ion batteries, synthesized using a high‐entropy approach. The high‐entropy approach entails mixing more than five elements in a single phase; hence, obtaining the desired properties is a challenge since this involves the interplay between different elements. Here, instead of oxide, oxyfluoride is chosen to suppress oxygen loss during long‐term cycling. Supplement to this, Li was introduced in the composition to obtain high configurational entropy and Na vacant sites, thus stabilizing the crystal structure, accelerating the kinetics of intercalation/deintercalation, and improving the air stability of the material. With the optimization of the cathode composition, a reversible capacity of 109 mAh g−1 (2‐4 V) and 144 mAh g−1 (2‐4.3 V) is observed in the first few cycles, along with a significant improvement in stability during prolonged cycling. Furthermore, in‐situ and ex‐situ diffraction studies during charging/discharging reveal that the high‐entropy strategy is successful in suppressing the complex phase transition. The impressive outcomes of the present work strongly motivate the pursuit of the high‐entropy approach to develop efficient cathodes for Na‐ion batteries.This article is protected by copyright. All rights reserved

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Section: Resultsmentioning

confidence: 62%

High‐Entropy Co‐Free O3‐Type Layered Oxyfluoride: A Promising Air‐Stable Cathode for Sodium‐Ion Batteries

et al. 2023

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“…Comparison table of NCM study results. [49][50][51][52][53] were cited in the Supplementary Materials.…”

Section: Supplementary Materialsmentioning

confidence: 99%

“…The first charge and discharge curves of the SCNCM-FC and SCNCM/(ALP+BA)-FC, at the current of 0.1 C in the voltage range of 2.8−4.3 V, (b) cycling performance of the SCNCM-FC and SCNCM/(ALP+BA)-FC electrode at the current of 1 C in the voltage range of 2.8−4.3 V. Refs. [ 49 , 50 , 51 , 52 , 53 ] were cited in the Supplementary Materials.…”

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confidence: 99%

Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi0.8Co0.1Mn0.1O2 Enables Excellent Electrochemical Stability at High Operation Voltage

et al. 2023

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The application of nickel-rich cathodes in lithium-ion batteries has been hampered by its rapid capacity/voltage fading and limited performance of rate. In this work, a passivation technique is used to create a stable composite interface on single-crystal LiNi0.8Co0.1Mn0.1O2 (NCM811) surface, which greatly improves the cycle life-span and high-voltage constancy of cathode with 4.5 and 4.6 V cut-off voltage. The improved Li+ conductivity of the interface enables a firm cathode–electrolyte interphase (CEI), which reduces interfacial side reactions, lowers the risk of safety hazards, and improves irreversible phase transitions. As a result, the electrochemical performance of single-crystal Ni-rich cathode are remarkably enhanced. The specific capacity of 152 mAh g−1 can be delivered at a charging/discharging rate of 5 C under 4.5 V cut-off voltage, much higher than 115 mAh g−1 of the pristine NCM811. After 200 cycles at 1 C, the composite interface modified NCM811 demonstrates outstanding capacity retention of 85.4% and 83.8% at 4.5 V and 4.6 V cut-off voltage, respectively.

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“…Their impressive energy density, long-term stability, and safety have yielded exceptional outcomes, validating their suitability as superior alternatives for high-performance LIBs. [17,[20][21][22][23][24][25][26][27][28][29][30][31][32][33] These transition metal oxides are promising materials for various applications due to their many redox-active sites and stable structures. However, their limitations prevent their wide-scale commercialization.…”

Section: Introductionmentioning

confidence: 99%

“…The structure and composition of these oxide‐based cathode materials are optimized to enhance their electrochemical performance, which plays a crucial role in the functionality of LIBs. Their impressive energy density, long‐term stability, and safety have yielded exceptional outcomes, validating their suitability as superior alternatives for high‐performance LIBs [17,20–33] . These transition metal oxides are promising materials for various applications due to their many redox‐active sites and stable structures.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Capability of Framework Materials to Improve Cathodes’ Performance for High‐energy Lithium‐ion Batteries

Konar,

Maiti,

Markovsky

et al. 2023

Chemistry Methods

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Lithiated transition metal oxides are the most important cathode materials for lithium‐ion batteries. Many efforts have been devoted in recent years to improving their energy density, stability, and safety, as demonstrated by thousands of publications. However, the commercialization of several promising materials is limited due to obstacles like stability limitations. To overcome the limitations of energetically high‐voltage or high‐capacity cathode materials, unconventional solutions for their surface engineering were suggested; among them, metal–organic frameworks (MOFs) and zeolites have been employed. MOFs possess favorable characteristics for stabilization goals, including manageable structures, topological control, high porosity, large surface area, and low density. This review article explores promising strategies for improving the electrochemical behavior of favorable cathode materials through surface modifications by using MOFs and zeolites. Investigating the potential of this frameworks‐based surface engineering for high energy density batteries’ electrodes is essential for optimal control of their surface chemistry. It may be highly effective to upgrade the performance of high‐energy cathode materials, thus extending the practical use of very high energy density rechargeable batteries.

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Evolution of ternary LixSnyOz artificial cathode-electrolyte interphase (ACEI) through ALD: a surface strengthened NCM811 with enhanced electrochemical performances for Li-ion batteries

Cited by 4 publications

References 43 publications

High‐Entropy Co‐Free O3‐Type Layered Oxyfluoride: A Promising Air‐Stable Cathode for Sodium‐Ion Batteries

High‐Entropy Co‐Free O3‐Type Layered Oxyfluoride: A Promising Air‐Stable Cathode for Sodium‐Ion Batteries

Phosphate and Borate-Based Composite Interface of Single-Crystal LiNi0.8Co0.1Mn0.1O2 Enables Excellent Electrochemical Stability at High Operation Voltage

Exploring the Capability of Framework Materials to Improve Cathodes’ Performance for High‐energy Lithium‐ion Batteries

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