A non-academic perspective on the future of lithium-based batteries

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Jan. 26, 2023

Abstract In the field of lithium-based batteries, there is often a substantial divide between academic research and industrial market needs. This in part driven by lack peer-reviewed publications from industry. Here we present non-academic view on applied batteries to sharpen focus help bridge gap research. We our discussion key metrics challenges be considered when developing new technologies this also explore need consider various performance aspects unison material/technology. Moreover, investigate suitability supply chains, sustainability materials impact system-level cost as factors that accounted for working technologies. With these considerations mind, then assess latest developments battery industry, providing views prospects

Language: Английский

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Lithium‐Metal Batteries: From Fundamental Research to Industrialization

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(43)

Published: Sept. 14, 2022

Lithium-metal batteries (LMBs) are representative of post-lithium-ion with the great promise increasing energy density drastically by utilizing low operating voltage and high specific capacity metallic lithium. LMBs currently stand at a point transition which accumulation knowledge from fundamental research is being translated into large-scale commercialization. This review summarizes available strategies for addressing intrinsic shortcomings LMBs, such as suppression dendritic growth parasitic reactions material to electrode cell level. The discussion pertaining level includes efforts concerns relating scaling up established expertise view intends encourage researchers in both institutions industry make synergistic effort share their views comprehensively ensure that LMB technology continues evolve harmony become mature technology.

Language: Английский

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Solid electrolyte interphases in lithium metal batteries

Joule, Journal Year: 2023, Volume and Issue: 7(10), P. 2228 - 2244

Published: Sept. 15, 2023

Lithium metal batteries (LMBs) have recently received enormous interest as a higher energy density alternative to conventional lithium-ion (LIBs). However, the commercialization of LMBs is currently impeded by poor cycle life due inhomogeneous lithium deposition and active loss. These are controlled solid electrolyte interphase (SEI) that forms on anode surface, there been numerous reported strategies produce SEIs with desired properties. these not sufficient achieve high cycling stabilities necessary for widespread LMB commercialization, requiring additional understanding SEI. In this perspective, we highlight recent progress in characterizing SEI outline need consider nanostructure, transport, mechanical properties together. We conclude prescribing several key research fronts an accurate, systematic study will guide future design enable development safe stable LMBs.

Language: Английский

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High-entropy electrolytes for practical lithium metal batteries

Nature Energy, Journal Year: 2023, Volume and Issue: 8(8), P. 814 - 826

Published: July 6, 2023

Language: Английский

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Degradation and Speciation of Li Salts during XPS Analysis for Battery Research

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(10), P. 3270 - 3275

Published: Sept. 6, 2022

X-ray photoelectron spectroscopy (XPS) is one of the most common techniques to characterize solid–electrolyte interphase (SEI) in battery research. However, residual salt or solvent can produce spectroscopic artifacts that complicate evaluation actual SEI chemistry. Herein, we present a systematic XPS study three different Li salts, namely lithium bis(fluorosulfonyl)imide (LiFSI), bis(trifluoromethanesulfonyl)imide (LiTFSI), and hexafluorophosphate (LiPF6). A side-by-side comparison reveals binding energies constituent elements sensitively shift response their distinct chemical environments. Strikingly, all salts consistently transformed into LiF under Ar+ sputtering, pointing out importance complete removal before analysis. Residue from organic impurities sample surface bulk were found specific solvent–salt combination, which should be distinguished real SEI. Overall, this set benchmark studies not only offers valuable reference for peak assignment but also emphasizes significance control experiments avoid potential pitfalls while identifying components.

Language: Английский

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Electrolyte engineering via ether solvent fluorination for developing stable non-aqueous lithium metal batteries

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Jan. 18, 2023

Fluorination of ether solvents is an effective strategy to improve the electrochemical stability non-aqueous electrolyte solutions in lithium metal batteries. However, excessive fluorination detrimentally impacts ionic conductivity electrolyte, thus limiting battery performance. Here, maximize and stability, we introduce targeted trifluoromethylation 1,2-dimethoxyethane produce 1,1,1-trifluoro-2,3-dimethoxypropane (TFDMP). TFDMP used as a solvent prepare 2 M solution comprising bis(fluorosulfonyl)imide salt. This shows 7.4 mS cm-1 at 25 °C, oxidation up 4.8 V efficient suppression Al corrosion. When tested coin cell configuration °C using 20 μm Li negative electrode, high mass loading LiNi0.8Co0.1Mn0.1O2-based positive electrode (20 mg cm-2) with negative/positive (N/P) capacity ratio 1, discharge retentions (calculated excluding initial formation cycles) 81% after 200 cycles 0.1 A g-1 88% 142 0.2 are achieved.

Language: Английский

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Revealing the Multifunctions of Li₃N in the Suspension Electrolyte for Lithium Metal Batteries

ACS Nano, Journal Year: 2023, Volume and Issue: 17(3), P. 3168 - 3180

Published: Jan. 26, 2023

Inorganic-rich solid-electrolyte interphases (SEIs) on Li metal anodes improve the electrochemical performance of batteries (LMBs). Therefore, a fundamental understanding roles played by essential inorganic compounds in SEIs is critical to realizing and developing high-performance LMBs. Among prevalent SEI observed for anodes, Li3N often found Herein, we elucidate new features utilizing suspension electrolyte design that contributes improved anode. Through empirical computational studies, show guides electrodeposition along its surface, creates weakly solvating environment decreasing Li+-solvent coordination, induces organic-poor anode, facilitates Li+ transport electrolyte. Importantly, recognizing specific inorganics can serve as one rational guidelines optimize through engineering

Language: Английский

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Intermolecular Interactions Mediated Nonflammable Electrolyte for High‐Voltage Lithium Metal Batteries in Wide Temperature

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(19)

Published: April 8, 2023

Abstract High‐voltage lithium metal batteries are the most promising energy storage technology due to their excellent density (>400 Wh kg −1 ). However, oxidation decomposition of conventional carbonate‐based electrolytes at high‐potential cathode, detrimental reaction between anode and electrolyte, particularly uncontrolled dendrite growth, always lead a severe capacity decay and/or flammable safety issues, hindering practical applications. Herein, solvation structure engineering strategy based on tuning intermolecular interactions is proposed as design novel nonflammable fluorinated electrolyte. Using this approach, work shows superior cycling stability in wide temperature range (−40 °C 60 °C) for 4.4 V‐class LiNi 0.8 Co 0.1 Mn O 2 (NCM811)‐based Li‐metal battery. By coupling high‐loading NCM811 cathode (3.0 mAh cm −2 ) controlled amount (twofold excess Li deposition Cu, Cu@Li) (N/P = 2), Cu@Li || full cell can cycle more than 162 cycles with high‐capacity retention 80%. This finds that change coordination environment + solvent PF 6 − by interaction an effective method stabilize electrolyte electrode performance. These discoveries provide pathway ion batteries.

Language: Английский

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In situ-polymerized lithium salt as a polymer electrolyte for high-safety lithium metal batteries

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(6), P. 2591 - 2602

Published: Jan. 1, 2023

Our strategy of polymerizing lithium salt as a polymer electrolyte (3D-SIPE-LiFPA) simultaneously enhances the cycle life and safety characteristics ultrahigh-energy-density metal batteries (437 W h kg −1 ).

Language: Английский

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Effect of the Electric Double Layer (EDL) in Multicomponent Electrolyte Reduction and Solid Electrolyte Interphase (SEI) Formation in Lithium Batteries

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(4), P. 2473 - 2484

Published: Jan. 23, 2023

Electrolytes, consisting of salts, solvents, and additives, must form a stable solid electrolyte interphase (SEI) to ensure the performance durability lithium(Li)-ion batteries. However, electric double layer (EDL) structure near charged surfaces is still unsolved, despite its importance in dictating species being reduced for SEI formation negative electrode. In this work, newly developed model was used illustrate effect EDL on two essential electrolytes, carbonate-based Li-ion batteries ether-based with Li-metal anodes. Both electrolytes have fluoroethylene carbonate (FEC) as common additive beneficial F-containing component (e.g., LiF). role FEC drastically differs these electrolytes. an effective modifier by only entering reduced, anion (PF6-) will not enter EDL. For electrolyte, both (TFSI-) can be reduced. The competition within due surface charge temperature leads unique observed prior experiments: more modulating components at low (-40 °C) than room (20 electrolyte. These collective quantitative agreements experiments emphasize incorporating multicomponent reduction reactions simulations/experiments predict/control layer.

Language: Английский

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