Exploring the performance of carbonate and ether-based electrolytes for anode-free lithium metal batteries operating under various conditions

Hagos, Teklay Mezgebe; Bezabh, Hailemariam Kassa; Redda, Haylay Ghidey; Moges, Endalkachew Asefa; Huang, Wei‐Hsiang; Huang, Chen‐Jui; Su, Wei‐Nien; Dai, Hongjie; Hwang, Bing‐Joe

doi:10.1016/j.jpowsour.2021.230388

Cited by 10 publications

(5 citation statements)

References 30 publications

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“…To better distinguish the phase transition temperatures of different electrolytes, differential scanning calorimetry (DSC) was carried in Figure S2. As reported by previous literatures, 20,22 the melting point of [PP 13 ][FSI] IL and HFE is 4 °C and −94 °C, respectively. The LIL (Figure S2a) shows a high melting point (T m ) of −3 °C and a crystallization temperature (T c ) of −46 °C, 20 but HIL (Figure S2b) and LHCE (Figure S2c) only exhibit a glass transition temperature (T g ) below −80 °C, indicating HIL and LHCE can keep liquid state at ultralow temperature.…”

Section: ■ Introductionsupporting

confidence: 73%

Establish an Advanced Electrolyte/Graphite Interphase by an Ionic Liquid-Based Localized Highly Concentrated Electrolyte for Low-Temperature and Rapid-Charging Li-Ion Batteries

Wang

Zhang

Han

et al. 2022

ACS Sustainable Chem. Eng.

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Ionic liquid electrolytes (ILEs) possess nonflammability, low volatility, good thermal stability, and high electrochemical stability, but poor compatibility with graphite (Gr) because of the irreversible cointercalation of the organic cations into the Gr interlayers, which severely limits their application in Gr anodes. Herein, a facile strategy is reported to solve the compatibility between ILEs and Gr by using a kind of ionic liquid-based localized highly concentrated electrolyte (LHCE) to establish a thin and robust solid electrolyte interphase (SEI) to inhibit the cointercalation of cations into the Gr anode. Simultaneously, the anion-derived inorganic SEI layer possesses lower interphase impedance than the solvent-derived organic SEI layer formed by a commercial carbonate electrolyte, hence the Gr/ Li cells manifest a fast-charging capability with superior rate capability, good cycling stability, and impressive low-temperature charge/discharge performance at −30 °C. This work offers a new design strategy for advanced electrolytes for next-generation LIBs with high safety, fast-charging ability, and low-temperature applications.

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Section: ■ Introductionsupporting

confidence: 73%

Establish an Advanced Electrolyte/Graphite Interphase by an Ionic Liquid-Based Localized Highly Concentrated Electrolyte for Low-Temperature and Rapid-Charging Li-Ion Batteries

Wang

Zhang

Han

et al. 2022

ACS Sustainable Chem. Eng.

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“…Additionally, the unstable decomposition products of linear carbonates result in thick and fragile interfacial films, not conducive to Na + transport. Apart from the carbonates mentioned above, carboxylic esters with low viscosity and low melting points have also been used as co-solvents to improve the electrolyte performance at low temperatures, such as ethyl acetate (EA) 30 and methyl propionate (MP). 31 The detailed physicochemical properties of common ester solvents are summarized in Table 2.…”

Section: Composition and Characteristics Of Organic Electrolytesmentioning

confidence: 99%

Recent Advances and Practical Challenges in Organic Electrolytes of Sodium-Ion Batteries

Qu,

Hu,

Huang

et al. 2024

Energy Fuels

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Sodium-ion batteries (SIBs) are expected to become attractive large-scale energy storage technologies owing to their abundant resources and low cost. However, sluggish reaction kinetics at the interface and poor thermodynamic stability of organic electrolytes lead to inferior cycle/rate performance and a low energy density of SIBs. The electrolyte engineering, including salt concentration adjustment, molecule design, and additive utilization, has been demonstrated to effectively optimize solvation structures and construct stable interfaces, resulting in accelerated Na + transport and suppressed electrolyte decomposition. This review focuses on recent advances and fundamental design principles of organic electrolytes in terms of sodium salts, solvents, and functional additives. Furthermore, the crucial challenges for SIBs, including high operating voltage, wide working temperature range, and fast charge rate, are discussed. The corresponding solution strategies are introduced for the desired organic electrolytes in high-performance SIBs. Finally, several perspectives on the future development of organic electrolytes are presented for practical SIBs.

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“…To enable the low-temperature performance, carboxylate solvents are regarded as great candidates owing to their lower freezing point, lower viscosity, and higher dielectric constant than carbonate solvents (Table S1, Supporting Information). [18,19] Among them, ethyl acetate (EA) has attracted a lot of attention because of its low cost and extremely low freezing point of −84 °C than other conventional solvents. For example, EA-based electrolyte was reported to enable an ultra-lowtemperature LIBs at −70 °C.…”

Section: Introductionmentioning

confidence: 99%

“…, Supporting Information), the Li metal foils soaked in 1m-DE and 3m-DE become powder and the electrolytes get reddish-brown (FigureS5b, Supporting Small 2023,19, 2300571 …”

mentioning

confidence: 99%

High‐Energy‐Density Lithium Metal Batteries with Impressive Li⁺ Transport Dynamic and Wide‐Temperature Performance from −60 to 60 °C

Han

Wang

Huang

et al. 2023

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temperature range between −20 and 55 °C. [3][4][5] Especially LIBs hardly work when the temperature is below −30 °C because of commercial carbonate electrolytes, which often include LiPF 6 salt, cyclic ethylene carbonate (EC), and linear carbonate solvents (such as dimethyl carbonate (DMC), diethyl carbonate (DEC)). The commercial carbonate electrolytes usually exhibit high freezing points and high viscosity at low temperature, resulting in sluggish Li + transport and charge transfer kinetics at low temperature. [6][7][8] This severely limits their application in electric vehicles, defense applications, and space exploration. The requirements for developing high-energydensity and wide-temperature energy storage devices become very urgent. [9,10] To improve energy density, lithium (Li) metal batteries (LMBs) containing Li metal anode and nickel (Ni)-rich LiNi x Co y Mn z O 2 (x ≥ 0.9) cathode have attracted extensive attention due to low electrochemical potential of Li metal (−3.04 V compared to standard hydrogen electrode) and high specific capacity (3860 mA h g −1 of Li metal, >200 mA h g −1 of LiNi 0.9 Co 0.05 Mn 0.05 O 2 ). [11][12][13] However, LiPF 6 salt is easily decomposed to produce HF and carbonate solvents are continuously oxidized/reduced at electrode/electrolyte interface, which will cause serious corrosion to Ni-rich cathode and Li metal anode. [14] As a result, during the cycling process, Li dendrites High-energy-density Li metal batteries (LMBs) with Nickel (Ni)-rich cathode and Li-metal anode have attracted extensive attention in recent years. However, commercial carbonate electrolytes bring severe challenges including poor cycling stability, severe Li dendrite growth and cathode cracks, and narrow operating temperature window, especially hardly work at below −40 °C. In this work, a 2.4 m lithium difluoro(oxalato)borate (LiDFOB) in ethyl acetate (EA) solvent with 20 wt% fluorocarbonate (FEC) (named 2.4m-DEF) is designed to solve Li + transport dynamic at low temperature and improve interfacial stability between electrolyte with Li anode or Ni-rich cathode. Beneficial lower freezing point, lower viscosity, and higher dielectric constant of EA solvent, the electrolyte exhibits excellent Li + transport dynamic. Relying on the unique Li + solvation structure, more DFOB − anions and FEC solvents are decomposed to establish a stable solid electrolyte interface at electrolyte/ electrode. Therefore, LiNi 0.9 Co 0.05 Mn 0.05 O 2 (NCM90)/Li LMB with 2.4m-DEF enables excellent rate capability (184 mA h g −1 at 30 C) and stable cycling performance with ≈93.7% of capacity retention after 200 cycles at 20 C and room temperature. Moreover, the NCM90/Li LMB with 2.4m-DEF exhibits surprising ultra-low-temperature performance, showing 173 mA h g −1 at −40 °C and 152 mA h g −1 at −60 °C, respectively.

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Exploring the performance of carbonate and ether-based electrolytes for anode-free lithium metal batteries operating under various conditions

Cited by 10 publications

References 30 publications

Establish an Advanced Electrolyte/Graphite Interphase by an Ionic Liquid-Based Localized Highly Concentrated Electrolyte for Low-Temperature and Rapid-Charging Li-Ion Batteries

Establish an Advanced Electrolyte/Graphite Interphase by an Ionic Liquid-Based Localized Highly Concentrated Electrolyte for Low-Temperature and Rapid-Charging Li-Ion Batteries

Recent Advances and Practical Challenges in Organic Electrolytes of Sodium-Ion Batteries

High‐Energy‐Density Lithium Metal Batteries with Impressive Li⁺ Transport Dynamic and Wide‐Temperature Performance from −60 to 60 °C

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Exploring the performance of carbonate and ether-based electrolytes for anode-free lithium metal batteries operating under various conditions

Cited by 10 publications

References 30 publications

Establish an Advanced Electrolyte/Graphite Interphase by an Ionic Liquid-Based Localized Highly Concentrated Electrolyte for Low-Temperature and Rapid-Charging Li-Ion Batteries

Establish an Advanced Electrolyte/Graphite Interphase by an Ionic Liquid-Based Localized Highly Concentrated Electrolyte for Low-Temperature and Rapid-Charging Li-Ion Batteries

Recent Advances and Practical Challenges in Organic Electrolytes of Sodium-Ion Batteries

High‐Energy‐Density Lithium Metal Batteries with Impressive Li+ Transport Dynamic and Wide‐Temperature Performance from −60 to 60 °C

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High‐Energy‐Density Lithium Metal Batteries with Impressive Li⁺ Transport Dynamic and Wide‐Temperature Performance from −60 to 60 °C