Stabilizing electrode–electrolyte interfaces to realize high-voltage Li||LiCoO<sub>2</sub> batteries by a sulfonamide-based electrolyte

Xue, Weimin; Gao, Rui; Shi, Zhe; Xiao, Xianghui; Zhang, Wenxu; Zhang, Yirui; Zhu, Yun; Waluyo, Iradwikanari; Li, Yao; Hill, Megan R.; Zhi, Zhang; Li, Sa; Кузнецов, О. А.; Zhang, Yiman; Lee, Ivan; Hunt, Adrian; Harutyunyan, Avetik R.; Shao‐Horn, Yang; Johnson, Jeremiah A.; Li, Ju

doi:10.1039/d1ee01265g

Cited by 119 publications

(94 citation statements)

References 61 publications

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Section: Challenges Of Lco For Achieving a Higher Energy Densitymentioning

confidence: 99%

“…Besides dominant strategies of bulk doping and surface modification, the development of highly compatible electrolytes to form stable CEI is also an important method to protect LCO in high voltage. The recent research results have shown that sulfonamide‐based electrolyte [ 44 ] and modified electrolyte with nitriles can effectively [ 71 ] improve the cycle stability of HV‐LCO. Therefore, design electrolytes and additives to form a stable CEI layer and additionally suppress the side reactions of LCO‐based LIBs is also one of the key and tough hotspots in the current research of HV‐LCO.…”

Section: Challenges Of Lco For Achieving a Higher Energy Densitymentioning

confidence: 99%

“…LCO particles exhibit high surface reactivity for oxidative dehydrogenation of carbonate solvents, which accelerates surface degradation and side reactions. As for the potential of other solvents in LCO‐based LIBs, Xue et al [ 44 ] developed novel sulfonamide‐based electrolyte with excellent chemically stability against oxidative dehydrogenation. Such sulfonamide‐based electrolyte is able to effectively stabilize the electrode–electrolyte interface by inhibiting the side reaction.…”

Section: Structural Control Of Lco For 46 Vmentioning

confidence: 99%

“…[43] It is also well known that the organic electrolytes are usually susceptible to decompose especially when the voltage approaching 4.6 V, which exceeds the working window of many solvents used in the electrolyte. [44,45] For example, ethylene carbonate itself is considered to be stable only under a voltage of 4.4 V. [46] From the perspective of the cathode end, it is considered that high voltage LCO will encounter challenges in different aspects, which mainly includes but not limited to the bulk structure transformation, surface reconstruction, and electrode/electrolyte interface instability. As a matter of fact, these challenges existed to a certain degree at different working voltages.…”

Section: Key Challenges Of Lco At 46 Vmentioning

confidence: 99%

mentioning

confidence: 99%

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Advancing to 4.6 V Review and Prospect in Developing High‐Energy‐Density LiCoO₂ Cathode for Lithium‐Ion Batteries

Zhang

Guo

et al. 2022

Small Methods

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Layered LiCoO2 (LCO) is one of the most important cathodes for portable electronic products at present and in the foreseeable future. It becomes a continuous push to increase the cutoff voltage of LCO so that a higher capacity can be achieved, for example, a capacity of 220 mAh g–1 at 4.6 V compared to 175 mAh g–1 at 4.45 V, which is unfortunately accompanied by severe capacity degradation due to the much‐aggravated side reactions and irreversible phase transitions. Accordingly, strict control on the LCO becomes essential to combat the inherent instability related to the high voltage challenge for their future applications. This review begins with a discussion on the relationship between the crystal structures and electrochemical properties of LCO as well as the failure mechanisms at 4.6 V. Then, recent advances in control strategies for 4.6 V LCO are summarized with focus on both bulk structure and surface properties. One closes this review by presenting the outlook for future efforts on LCO‐based lithium ion batteries (LIBs). It is hoped that this work can draw a clear map on the research status of 4.6 V LCO, and also shed light on the future directions of materials design for high energy LIBs.

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Section: Challenges Of Lco For Achieving a Higher Energy Densitymentioning

confidence: 99%

Section: Challenges Of Lco For Achieving a Higher Energy Densitymentioning

confidence: 99%

Section: Structural Control Of Lco For 46 Vmentioning

confidence: 99%

Section: Key Challenges Of Lco At 46 Vmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Advancing to 4.6 V Review and Prospect in Developing High‐Energy‐Density LiCoO₂ Cathode for Lithium‐Ion Batteries

Zhang

Guo

et al. 2022

Small Methods

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Critical Review of Fluorinated Electrolytes for High‐Performance Lithium Metal Batteries

Chen

Yun

et al. 2023

Adv Funct Materials

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Lithium metal batteries (LMBs), due to their ultra‐high energy density, are attracting tremendous attentions. However, their commercial application is severely impeded by poor safety and unsatisfactory cycling stability, which are induced by lithium dendrites, side reactions, and inferior anodic stability. Electrolytes, as the indispensable and necessary components in lithium metal batteries, play a crucial role in regulating the electrochemical performance of LMBs. Recently, the fluorinated electrolytes are widely investigated in high‐performance LMBs. Thus, the design strategies of fluorinated electrolytes are thoroughly summarized, including fluorinated salts, fluorinated solvents, and fluorinated additives in LMBs, and insights of the fluorinated components in suppressing lithium dendrites, improving anodic stability and cycling stability. Finally, an outlook with several design strategies and challenges will be proposed for novel fluorinated electrolytes.

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Stable Non‐flammable Phosphate Electrolyte for Lithium Metal Batteries via Solvation Regulation by the Additive

Jiang

Liu

Wang

et al. 2023

Adv Funct Materials

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The application of lithium metal batteries (LMBs) is impeded by safety concerns. Employing non-flammable electrolytes can improve battery reliability while the cost and performance deterioration limit their popularization. Herein, a high-performance non-flammable electrolyte is designed, 1.5 m LiTFSI in propylene carbonate (PC)/triethyl phosphate (TEP) (4:1 by vol.) with 4-nitrophenyl trifluoroacetate (TFANP) as the additive, which can facilitate the construction of LiF-rich solid electrolyte interphase (SEI) on Li anode surface and cathode electrolyte interphase (CEI) on cathode surface through its prioritized decomposition. In TFANP-containing electrolyte, the decreased TEP coordination number in the solvation sheath relieves the adverse effect of active TEP on both the SEI and CEI for suppressing the growth of Li dendrites and reducing the continuous electrolyte consumption. Thus, the Li||LiNi 0.6 Co 0.2 Mn 0.2 O 2 battery with such an electrolyte can deliver 132 mAh g −1 after 150 cycles with high coulombic efficiency (99.5%) and superior rate performance (110 mAh g −1 at 5 C, 1 C = 200 mA g −1 ). This work provides a new additive insight on non-flammable electrolyte for reliable LMBs.

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Stabilizing electrode–electrolyte interfaces to realize high-voltage Li||LiCoO₂ batteries by a sulfonamide-based electrolyte

Abstract: A sulfonamide-based electrolyte can greatly improve the cycling stability of the commercial LiCoO2 cathode at high cut-off voltages in Li metal||LCO batteries by stabilizing the electrode–electrolyte interfaces on both the anode and cathode.

Cited by 119 publications

References 61 publications

Advancing to 4.6 V Review and Prospect in Developing High‐Energy‐Density LiCoO₂ Cathode for Lithium‐Ion Batteries

Advancing to 4.6 V Review and Prospect in Developing High‐Energy‐Density LiCoO₂ Cathode for Lithium‐Ion Batteries

Critical Review of Fluorinated Electrolytes for High‐Performance Lithium Metal Batteries

Stable Non‐flammable Phosphate Electrolyte for Lithium Metal Batteries via Solvation Regulation by the Additive

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Stabilizing electrode–electrolyte interfaces to realize high-voltage Li||LiCoO2 batteries by a sulfonamide-based electrolyte

Abstract: A sulfonamide-based electrolyte can greatly improve the cycling stability of the commercial LiCoO2 cathode at high cut-off voltages in Li metal||LCO batteries by stabilizing the electrode–electrolyte interfaces on both the anode and cathode.

Cited by 119 publications

References 61 publications

Advancing to 4.6 V Review and Prospect in Developing High‐Energy‐Density LiCoO2 Cathode for Lithium‐Ion Batteries

Advancing to 4.6 V Review and Prospect in Developing High‐Energy‐Density LiCoO2 Cathode for Lithium‐Ion Batteries

Critical Review of Fluorinated Electrolytes for High‐Performance Lithium Metal Batteries

Stable Non‐flammable Phosphate Electrolyte for Lithium Metal Batteries via Solvation Regulation by the Additive

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Product

Resources

About

Stabilizing electrode–electrolyte interfaces to realize high-voltage Li||LiCoO₂ batteries by a sulfonamide-based electrolyte

Advancing to 4.6 V Review and Prospect in Developing High‐Energy‐Density LiCoO₂ Cathode for Lithium‐Ion Batteries

Advancing to 4.6 V Review and Prospect in Developing High‐Energy‐Density LiCoO₂ Cathode for Lithium‐Ion Batteries