Stable non-corrosive sulfonimide salt for 4-V-class lithium metal batteries

Qiao, Lixin; Oteo, Uxue; Martínez‐Ibáñez, Maria; Santiago, Alexander; Cid, Rosalía; Sánchez-Díez, Eduardo; Lobato, Elias; Meabe, Leire; Armand, Michel; Zhang, Heng

doi:10.1038/s41563-021-01190-1

Cited by 118 publications

(104 citation statements)

References 40 publications

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“…These results suggest that grafting TFSI moiety onto a polymeric backbone could sufficiently prevent the formation of soluble aluminum salts, as observed for the case of discrete TFSI anions. [ 43 ]…”

Section: Resultsmentioning

confidence: 99%

Single Lithium Ion Conducting “Binderlyte” for High‐Performing Lithium Metal Batteries

Santiago

Sánchez-Díez

Oteo

et al. 2022

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Rechargeable lithium metal batteries (LMBs) are deemed as a viable solution to improve the power and/or energy density of the contemporary lithium‐ion batteries (LIBs). However, poor Li‐ion diffusivity within high‐energy cathodes causes sluggish kinetics of the corresponding redox reactions particularly at high C‐rates, thereby largely impeding the performance of rechargeable LMBs. In this work, a dual‐functional single Li‐ion conducting polysalt is proposed as both catholyte and binding agent (coined “Binderlyte”) for rechargeable LMBs. The designed Binderlyte is thermally and electrochemically stable, allowing its use for high‐energy cathodes like Li(Ni1/3Mn1/3Co1/3)O2 (NMC111). The implementation of designer Binderlyte endows the Li° || NMC111 cell with superior cycling stability and capacity retention even at an extremely high C‐rate of 10C. In particular, the soft and flexible nature of the Binderlyte allows the thick NMC cathode to operate at extremely low porosity (20 vol%) with almost no capacity decay. This work may provide a paradigm shift on the design of innovative polymeric materials, which are essential for developing high‐performing rechargeable LMBs.

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Section: Resultsmentioning

confidence: 99%

Single Lithium Ion Conducting “Binderlyte” for High‐Performing Lithium Metal Batteries

Santiago

Sánchez-Díez

Oteo

et al. 2022

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Self Cite

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“…[139,288] Reportedly, difluoromethanesulfonyl)(trifluoromethanesulfonyl)imide anion (DFTFSI − ) suppressed the Al corrosion in carbonate solutions, owing to the decomposition of the anion that results in the formation of AlF 3 and LiF passivating layers. [289] Borates such as BF 4 − and BOB − , passivate aluminum as well as fluorophosphates. [17] Apparently, most fluorinated salt anions, except TFSI − possess a kind of Al-passivating ability.…”

Section: Transition Metal Dissolutionmentioning

confidence: 99%

Are Polymer‐Based Electrolytes Ready for High‐Voltage Lithium Battery Applications? An Overview of Degradation Mechanisms and Battery Performance

Martínez

Boaretto

Naylor

et al. 2022

Advanced Energy Materials

120

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High‐voltage lithium polymer cells are considered an attractive technology that could out‐perform commercial lithium‐ion batteries in terms of safety, processability, and energy density. Although significant progress has been achieved in the development of polymer electrolytes for high‐voltage applications (> 4 V), the cell performance containing these materials still encounters certain challenges. One of the major limitations is posed by poor cyclability, which is affected by the low oxidative stability of standard polyether‐based polymer electrolytes. In addition, the high reactivity and structural instability of certain common high‐voltage cathode chemistries further aggravate the challenges. In this review, the oxidative stability of polymer electrolytes is comprehensively discussed, along with the key sources of cell degradation, and provides an overview of the fundamental strategies adopted for enhancing their cyclability. In this regard, a statistical analysis of the cell performance is provided by analyzing 186 publications reported in the last 17 years, to demonstrate the gap between the state‐of‐the‐art and the requirements for high‐energy density cells. Furthermore, the essential characterization techniques employed in prior research investigating the degradation of these systems are discussed to highlight their prospects and limitations. Based on the derived conclusions, new targets and guidelines are proposed for further research.

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“…8 a [ 140 ]. Likewise, another non-corrosive sulfonimide salt, lithium (difluoromethanesulfonyl) (trifluoromethanesulfonyl) imide (LiDFTFSI) that critically prevent the anodic dissolution of the aluminum current collector at high voltages of at least 4.2 V versus Li/Li + , was reported recently [ 141 ]. The unstable nature of Al(DFTFIS) 3 in carbonate solvents makes it easy to decompose to form AlF 3 and LiF protective layers, thus preventing further anodic dissolution (Fig.…”

Section: Robust Cei: From Electrolyte Designmentioning

confidence: 99%

“…b Structures of DFTFSI-and TFSI-anions and schematic illustration of the possible Al corrosion. Copyright from Ref [141].…”

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confidence: 99%

Critical Review on cathode–electrolyte Interphase Toward High-Voltage Cathodes for Li-Ion Batteries

2022

Nano-Micro Lett.

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The thermal stability window of current commercial carbonate-based electrolytes is no longer sufficient to meet the ever-increasing cathode working voltage requirements of high energy density lithium-ion batteries. It is crucial to construct a robust cathode–electrolyte interphase (CEI) for high-voltage cathode electrodes to separate the electrolytes from the active cathode materials and thereby suppress the side reactions. Herein, this review presents a brief historic evolution of the mechanism of CEI formation and compositions, the state-of-art characterizations and modeling associated with CEI, and how to construct robust CEI from a practical electrolyte design perspective. The focus on electrolyte design is categorized into three parts: CEI-forming additives, anti-oxidation solvents, and lithium salts. Moreover, practical considerations for electrolyte design applications are proposed. This review will shed light on the future electrolyte design which enables aggressive high-voltage cathodes.

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Stable non-corrosive sulfonimide salt for 4-V-class lithium metal batteries

Cited by 118 publications

References 40 publications

Single Lithium Ion Conducting “Binderlyte” for High‐Performing Lithium Metal Batteries

Single Lithium Ion Conducting “Binderlyte” for High‐Performing Lithium Metal Batteries

Are Polymer‐Based Electrolytes Ready for High‐Voltage Lithium Battery Applications? An Overview of Degradation Mechanisms and Battery Performance

Critical Review on cathode–electrolyte Interphase Toward High-Voltage Cathodes for Li-Ion Batteries

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