Multifunctional polymer electrolyte membrane networks for energy storage via ion-dipole complexation in lithium metal battery

Lee, Hyunsang; Li, Ran; Kyu, Thein; Cao, Jinwei; Kyu, Thein

doi:10.1016/j.est.2023.107138

Cited by 3 publications

(4 citation statements)

References 41 publications

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“…Additionally, the extreme hazards associated with the low flashpoint and flammability of these organic solvents raise safety concerns. Furthermore, achieving both high capacity and high energy density simultaneously, which are essential for practical applications in all-electric vehicles, remains a challenge. − In order to overcome the aforementioned obstacles, an inorganic ceramic electrolyte (ICE), − a solid polymer electrolyte (SPE), − and recently, a polymer electrolyte membrane (PEM) − have emerged as potential candidates for high-power, high-energy-density electrochemical-energy-storage systems. − …”

Section: Introductionmentioning

confidence: 99%

“…This approach lowers the glass transition temperature, enhancing the chain mobility within the PEM network and promoting ion conduction. These efforts aim to achieve higher conductivity levels of approximately ∼10 –3 S/cm for advanced LIBs. ,,− Another drawback of liquid electrolyte batteries is the fire hazard caused by overheating, particularly during deep discharging accompanied by lithium dendrite formation. These factors can lead to electrical short-circuiting and ignition of the volatile organic solvents present in liquid electrolytes. − To alleviate this safety concern, the development of solvent-free, nonflammable solid electrolytes for all-solid-state polymer lithium-ion batteries is of paramount importance for energy-storage systems.…”

Section: Introductionmentioning

confidence: 99%

“…The present article demonstrates the effect of prelithiation through deep discharging on the electrochemical performance of the polymer electrolyte membrane (PEM) using cyclic voltammetry (CV) and galvanometric charge/discharge cycling in various potential ranges covering the PEM (0.01–3.5 V), NMC622 cathode (2.5–5 V), and full battery (0.01–5 V). Furthermore, the pseudocapacitor-like behavior exhibited by the conetworked PEM will be discussed.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, liquid electrolytes based on mixtures of ethylene carbonate (EC) or propylene carbonate (PC) with dimethyl carbonate (DMC) or diethyl carbonate (DEC) act as organic plasticizing solvents, facilitating Li-ion conduction between the anode and cathode during charging and discharging processes. However, these mixed organic liquid electrolytes are not known for their ability to store lithium cations or energy. − One notable feature of the present conetworked PEM is its capability to store extra energy in addition to the conventional LFP or NMC cathodes.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Energy Storage in Lithium-Metal Batteries via Polymer Electrolyte Polysulfide–Polyoxide Conetworks

Lee

Jeong

Parrondo

et al. 2023

ACS Appl. Mater. Interfaces

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The present article entails a novel concept of storing extra energy in a multifunctional polymer electrolyte membrane (PEM) beyond the storage capacity of a cathode, which is achieved by so-called "prelithiation" upon simply deep discharging to a low potential range of a lithium-metal electrode (i.e., −0.5 to 0.5 V). This unique extra energy-storage capacity has been realized recently in the PEM consisting of polysulfide-co-polyoxide conetworks in conjunction with succinonitrile and LiTFSI salt that facilitate complexation via ion−dipole interaction of dissociated lithium ions with thiols, disulfide, or ether oxygen of the conetwork. Although ion−dipole complexation may increase the cell resistance, the prelithiated PEM provides excess lithium ions during oxidation (or Li + stripping) at the Li-metal electrode. Once the PEM network is fully saturated with Li ions, the remaining excess ions can move through the complexation sites at ease, thereby affording not only facile ion transport but also extra ion-storage capacity within the PEM conetwork. Of particular interest is that the lithiated polysulfide-co-polyoxide polymer networkbased PEM exhibits a high conductivity of 1.18 × 10 −3 S/cm at ambient, which can also store extra energy with a specific capacity of about 150 mAh/g at a 0.1C rate in the PEM voltage range of 0.01−3.5 V in addition to 165 mAh/g at 0.2C of an NMC622 (nickel manganese cobalt oxide) cathode (i.e., 2.5−4.6 V) with a Coulombic efficiency of approximate unity. Moreover, its Li-metal battery assembly with an NMC622 cathode exhibits a very high specific capacity of ∼260 mAh/g at 0.2C in the full battery range of 0.01−5 V, having a higher Li + transference number of 0.74, suggestive of domination by the lithium cation transport relative to those (0.22− 0.35) of organic liquid electrolyte lithium-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced Energy Storage in Lithium-Metal Batteries via Polymer Electrolyte Polysulfide–Polyoxide Conetworks

Lee

Jeong

Parrondo

et al. 2023

ACS Appl. Mater. Interfaces

Self Cite

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Single-ion conducting polymer electrolyte: A promising electrolyte formulation to extend the lifespans of LMBs

Sahu,

Varadwaj,

Nayak

et al. 2024

Nano Energy

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A Comparative Study on Electrochemical Performance of Single versus Dual Networks in Lithium Metal/Polysulfide-Polyoxide Co-Network/Lithium Titanium Oxide Cathode

Lee,

Choi,

Kyu

2024

Batteries

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The present article introduces a strategy for controlling oxidation and reduction reactions within polymer electrolyte membrane (PEM) networks as a means of enhancing storage capacity through the complexation of dissociated lithium cations with multifunctional groups of the polymer network. Specifically, co-polymer networks based on polysulfide (PS) and polyoxide (PO) precursors, photo-cured in the presence of succinonitrile (SCN) and lithium bis(trifluoro methane sulfonyl imide) (LiTFSI) salt, exhibited ionic conductivity on the order of mid 10−4 S/cm at ambient temperature in the 30/35/35 (weight %) composition. Lithium titanate (LTO, Li4Ti5O12) electrode was chosen as an anode (i.e., a potential source of Li ions) against lithium iron phosphate (LFP, LiFePO4) cathode in conjunction with polysulfide-co-polyoxide dual polyelectrolyte networks to control viscosity for 3D printability on conformal surfaces of drone and aeronautic vehicles. It was found that the PS-co-PO dual network-based polymer electrolyte containing SCN plasticizer and LiTFSI salt exhibited extra storage capacity (i.e., specific capacity of 44 mAh/g) with the overall specific capacity of 170 mAh/g (i.e., for the combined LTO electrode and PEM) initially that stabilized at 153 mAh/g after 50th cycles with a reasonable capacity retention of over 90% and Coulombic efficiency of over 99%. Of particular interest is the observation of the improved electrochemical performance of the polysulfide-co-polyoxide electrolyte dual-network relative to that of the polyoxide electrolyte single-network.

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Multifunctional polymer electrolyte membrane networks for energy storage via ion-dipole complexation in lithium metal battery

Cited by 3 publications

References 41 publications

Enhanced Energy Storage in Lithium-Metal Batteries via Polymer Electrolyte Polysulfide–Polyoxide Conetworks

Enhanced Energy Storage in Lithium-Metal Batteries via Polymer Electrolyte Polysulfide–Polyoxide Conetworks

Single-ion conducting polymer electrolyte: A promising electrolyte formulation to extend the lifespans of LMBs

A Comparative Study on Electrochemical Performance of Single versus Dual Networks in Lithium Metal/Polysulfide-Polyoxide Co-Network/Lithium Titanium Oxide Cathode

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