Expanding the low-temperature and high-voltage limits of aqueous lithium-ion battery

Ma, Zekai; Chen, Jiawei; Vatamanu, Jenel; Borodin, Oleg; Bedrov, Dmitry; Zhou, Xianggui; Wen-guang, Zhang; Li, Weishan; Xu, Kang; Xing, Lidan

doi:10.1016/j.ensm.2021.12.045

Cited by 84 publications

(44 citation statements)

References 33 publications

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“…2d. The addition of ionic liquid PP 13 FSI into concentrated LiFSI aqueous electrolytes is different from previous studies on the addition of co-solvents such as dimethyl carbonate (DMC), 16 acetonitrile (AN), 22 1,3-dioxolane (DOL), 40 etc. In this work, PP 13 FSI provides lithium-philic groups of FSI À towards Li + and a hydrophobic PP 13 + group against H 2 O molecules.…”

Section: Resultsmentioning

confidence: 71%

Suppressing water clusters by using “hydrotropic” ionic liquids for highly stable aqueous lithium-ion batteries

et al. 2022

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Section: Resultsmentioning

confidence: 71%

Suppressing water clusters by using “hydrotropic” ionic liquids for highly stable aqueous lithium-ion batteries

et al. 2022

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“…Nevertheless, the complicated ex situ synthesis methods (i.e ., film-casting process) of SPE films are always accompanied by a necessary but energy-consuming step of solvent evaporation, leading to poor contact and affinity at the electrolyte|electrode interface . Thus, SPEs prepared via in situ processing approaches (i.e., in situ polymerization of solvent monomers and 1,3 dioxolane (DOL) − ) are superiorly amazing and popular to build SPE-based LMBs with laminated interfaces.…”

Section: Introductionmentioning

confidence: 99%

Transference Number Reinforced-Based Gel Copolymer Electrolyte for Dendrite-Free Lithium Metal Batteries

Liu

Tan

Liu

et al. 2022

ACS Appl. Mater. Interfaces

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The progress of electric vehicles is highly inhibited by the limited energy density and growth of dendrite Li in current power batteries. Breakthroughs and improvements in electrolyte chemistry are highlighted to directly address the above issues, namely, the development of electrolytes with a high lithium-ion transference number (t Li + ), enabling one to effectively restrict the concentration polarization during repetitious cycling. Herein, we propose a novel ether-based copolymer-based gel polymer electrolyte (ECP-based GPE) by in situ copolymerization as an intriguing strategy to achieve a high t Li + of ∼0.64. Molecular dynamics simulations and finite element method analyses illustrate the enhanced Li + diffusion process (D Li + , ∼1.76 × 10 −10 m 2 s −1 ) in ECP-based GPE with a homogeneous electric potential accommodated around the lithium metal anode. Therefore, such a high-t Li + -based electrolyte renders a high reversibility of dendrite-free lithium plating/stripping at a high areal capacity (5 mA cm −2 /5 mA h cm −2 ) in an Li||Li symmetric cell and facilitates superior cycling performances (over 1000 cycles) at a high rate (5 C) with a capacity retention of ∼91.1% in Li||LiFePO 4 batteries, promoting the practical application of solid-state lithium metal batteries.

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“…To tackle these thorny problems, scientists have come up with some strategies from a wide perspective. Generally, organic solvents with high polarities, such as ethylene glycol, [ 8 ] 1,3‐dioxolane, [ 9 ] and dimethyl sulfoxide, [ 10 ] can break the hydrogen bonds (HBs) network of water and have been used to decrease the freezing point of electrolytes. However, blending with organic solvents would make aqueous electrolytes a lower ionic conductivity, higher toxicity, and combustibility.…”

Section: Introductionmentioning

confidence: 99%

A −60 °C Low‐Temperature Aqueous Lithium Ion‐Bromine Battery with High Power Density Enabled by Electrolyte Design

Wang

Yin

et al. 2022

Advanced Energy Materials

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density are necessary for grid-level frequency regulation, [3] hybrid electric vehicles, [4] material handling equipment, [5] etc. Nevertheless, seldom rechargeable ALIBs or non-aqueous lithium-ion batteries (LIBs) can achieve high power density at low temperatures. [6] Compared with non-aqueous electrolytes, aqueous electrolytes with low viscosity and high safety have intrinsic advantages under low temperatures and high rate circumstances. [2,7] Therefore, ALIBs have the potential to maintain excellent capacity and power densities at low temperatures, as long as the following two problems are settled: i) the high freezing point of aqueous solutions causing the dramatic decline in the conductivities of electrolytes at low temperatures; ii) the sluggish kinetics derived from both de-solvation and bulk diffusion steps impeding lithium ions fast de-/intercalation in the electrode materials. [7c] To tackle these thorny problems, scientists have come up with some strategies from a wide perspective. Generally, organic solvents with high polarities, such as ethylene glycol, [8] 1,3-dioxolane, [9] and dimethyl sulfoxide, [10] can break the hydrogen bonds (HBs) network of water and have been used to decrease the freezing point of electrolytes. However, blending with organic solvents would make aqueous electrolytes a lower ionic conductivity, higher toxicity, and combustibility. On the other hand, adding salts with high solubilities, such as LiCl and LiTFSI, is considered a safe, effective, and promising route for building low-temperature electrolytes of ALIBs. [6d,11] However, the unsatisfactory specific capacity of electrode materials even at the low current density (≤0.2 A g -1 ), such as LiMn 2 O 4 (63 mAh g -1 , −40 °C), [11b] LiCoO 2 (65 mAh g -1 , −40 °C), [11a] LiTi 2 (PO 4 ) 3 (65 mAh g -1 , −50 °C), [10] and LiFePO 4 (36 mAh g -1 , −20 °C), [8] greatly limits the rapid development of ALIBs. Even though some strategies (nanosize and surface modification) to improve the low-temperature kinetics of electrode materials in non-aqueous LIBs are worth referring and trying, [12] significant progress is rarely reported, which should be attributed to the sluggish electrochemical reaction nature of intercalation compounds at low temperatures.Herein, we propose an ultra-low temperature aqueous lithium ion-bromine battery (ALBB) realized by a tailored functionalized electrolyte (TFE) consisting of lithium bromide (LiBr) and tetrapropylammonium bromide (TPABr), which can keep liquid and possess high conductivity even at the Aqueous lithium-ion batteries are normally limited at low temperatures, because of the consequent low conductivity of electrolytes and the sluggish kinetics of electrode materials. Herein, a high-performance ultra-low temperature aqueous lithium ion-bromine battery (ALBB) realized by a tailored functionalized electrolyte (TFE) consisting of lithium bromide and tetrapropylammonium bromide (TPABr) is reported, which can maintain liquid state with high conductivity (1.89 mS cm −1 ) at −60 °C. In additi...

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Expanding the low-temperature and high-voltage limits of aqueous lithium-ion battery

Cited by 84 publications

References 33 publications

Suppressing water clusters by using “hydrotropic” ionic liquids for highly stable aqueous lithium-ion batteries

Suppressing water clusters by using “hydrotropic” ionic liquids for highly stable aqueous lithium-ion batteries

Transference Number Reinforced-Based Gel Copolymer Electrolyte for Dendrite-Free Lithium Metal Batteries

A −60 °C Low‐Temperature Aqueous Lithium Ion‐Bromine Battery with High Power Density Enabled by Electrolyte Design

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