Single‐Ion Conducting Soft Electrolytes for Semi‐Solid Lithium Metal Batteries Enabling Cell Fabrication and Operation under Ambient Conditions (Adv. Energy Mater. 38/2021)

Oh, Ki Keun; Kim, Jung‐Hui; Kim, Sehee; Oh, Dongrak; Han, Sun-Phil; Jung, Kwangeun; Wang, Zhuyi; Shi, Liyi; Su, Yu-Kai; Yim, Taeeun; Yuan, Shuai; Lee, Sang Young

doi:10.1002/aenm.202170151

Cited by 4 publications

(3 citation statements)

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“…The Li|FE18N|Li battery endured 1000 h at 0.15 mA cm −2 with a low overpotential of ≈20 mV while the Li|FE|Li battery failed at 200 h ( Figure 1 a). Notably, the “arc” (Figure 1b) observed at the Li|FE|Li battery reflects the accumulation of “dead” Li, [ 40 ] suggesting the inferior interfacial stability of FE electrolyte toward LMA. The Li||Li symmetric batteries after 10 cycles at 3.0 mA cm −2 were disassembled and the morphological features of Li metal after plating/stripping were characterized by scanning electron microscope (SEM) (Figure 1c,d).…”

Section: Resultsmentioning

confidence: 99%

Tailoring the Chemical/Electrochemical Response in a Quasi−Solid Polymer Electrolyte Enables the Simultaneous In Situ Construction of Superior Cathodic and Anodic Interfaces

Zhao,

Lu,

Yan

et al. 2024

Advanced Energy Materials

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Although the flexibility of the quasi−solid polymer electrolyte favors its surface conformal to the electrode, interfacial damage originating from side reactions between the electrolyte and the electrode remains dominant for battery failure. The design of quasi−solid electrolytes compatible with both aggressive nickel−rich cathode and lithium metal anode persists critical to the application of quasi−solid high−voltage lithium metal batteries (LMBs). Herein, a chemical/electrochemical response strategy is proposed to construct simultaneously stable cathodic and anodic interfaces relying on the synergistic effect of 1,4,7,10,13,16−hexaoxacyclooctadecane (18C6) and LiNO3. The distinctive [18C6Li]+NO3− cluster modifies electric double layer structure by specific adsorption on the electrode, thereby regulating the interfacial layer composition and construction. The NO3− on electrode preferentially decomposes to improve the interfacial performances, leaving the [18C6Li]+ to cut off the side reaction. Furthermore, the 18C6 coordinates with detrimental transition metal ions from NMC811 cathode and converts into useful clusters alleviating the knock−on effect. Thus, the quasi−solid electrolyte with 18C6 and LiNO3 enables Li||NMC811 coin cell to cycle stably over wide operation temperature (0−55 °C), especially, achieving high capacity retention of 79.2% after 300 cycles at 30 °C. This chemical/electrochemical response strategy projects new insights into the design of smart reactive electrolytes for high−voltage LMBs.

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Section: Resultsmentioning

confidence: 99%

Tailoring the Chemical/Electrochemical Response in a Quasi−Solid Polymer Electrolyte Enables the Simultaneous In Situ Construction of Superior Cathodic and Anodic Interfaces

Zhao,

Lu,

Yan

et al. 2024

Advanced Energy Materials

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“…Polyionic liquids (PILs) have been widely studied in recent years. PILs are similar to ionic liquids in terms of electrochemical stability, ion conduction, lithium salt dissolution, thermal stability, and noncombustibility. , Additionally, due to the electrostatic interactions between anions and cations, the cations immobilized on the polymer molecular chains could hinder the movement of anions under electric fields, which is beneficial for the increase of t Li + . , During Li + deposition, on the other hand, the positively charged molecular chains of the PILs create an electrostatic shielding effect on the protruded positions of the lithium metal surface, which helps to inhibit the growth of lithium dendrites. , ILs composed of cyclic aliphatic cations (such as pyrrolidinium cations) and imine anions have proved to be electrochemically stable among the IL family . Pyrrolidinium-based PILs have been reported as electrolytes for LMB application. ,, Most of them are derivatives of poly(diallyldimethylammonium) chloride, which was commercially available.…”

Section: Introductionmentioning

confidence: 99%

“…21,22 Additionally, due to the electrostatic interactions between anions and cations, the cations immobilized on the polymer molecular chains could hinder the movement of anions under electric fields, which is beneficial for the increase of t Li + . 23,24 During Li + deposition, on the other hand, the positively charged molecular chains of the PILs create an electrostatic shielding effect on the protruded positions of the lithium metal surface, which helps to inhibit the growth of lithium dendrites. 25,26 ILs composed of cyclic aliphatic cations (such as pyrrolidinium cations) and imine anions have proved to be electrochemically stable among the IL family.…”

Section: Introductionmentioning

confidence: 99%

Rationally Designed Fluorinated Polycation Electrolytes for High-Rate, Dendrite-Free Lithium Metal Batteries

Jiang,

Chai,

Deng

et al. 2023

ACS Appl. Mater. Interfaces

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Self‐Repairable and Flexible Polymer Network Electrolyte with Enhanced Lithium‐Ion Conduction for Lithium Metal Batteries

Song

Jiang

Deng

et al. 2022

Chemistry A European J

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Developing high-performance functional polymerbased electrolytes is important for realizing next generation safe lithium metal batteries. In this study, a new type of quasi-solid polymer network electrolyte (SIPH-x-y%) was prepared by combining synthesized polymer network (SIPH) containing urethane bond linked ionic liquids (ILs), polyethylene glycol (PEG), and disulfide bond moieties, lithium bis(trifluoromethanesulfonyl)imide salt (LiTFSI), and glyme type additive. It was found that SIPH-20-40% was mechanically flexible, self-healable, and showed high ionic conductivity of 2.67 × 10 À 4 S cm À 1 . Also, SIPH-20-40% possesses a high lithium ion transference number of 0.43 and good electrochemical stability. These properties enabled the SIPH-20-40% electrolyte membrane to support Li/Li symmetrical cell to cycle stably during long term Li plating and stripping. The Li/ SIPH-20-40%/LFP showed high delivered specific capacity and good stability (166.1 mAh g À 1 after 106 cycles at 0.2 C). Such glyme doped polymer network electrolyte provides new experimental findings for developing polymer-based electrolyte with excellent mechanical integrity and battery related properties.

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Single‐Ion Conducting Soft Electrolytes for Semi‐Solid Lithium Metal Batteries Enabling Cell Fabrication and Operation under Ambient Conditions (Adv. Energy Mater. 38/2021)

Cited by 4 publications

References 0 publications

Tailoring the Chemical/Electrochemical Response in a Quasi−Solid Polymer Electrolyte Enables the Simultaneous In Situ Construction of Superior Cathodic and Anodic Interfaces

Tailoring the Chemical/Electrochemical Response in a Quasi−Solid Polymer Electrolyte Enables the Simultaneous In Situ Construction of Superior Cathodic and Anodic Interfaces

Rationally Designed Fluorinated Polycation Electrolytes for High-Rate, Dendrite-Free Lithium Metal Batteries

Self‐Repairable and Flexible Polymer Network Electrolyte with Enhanced Lithium‐Ion Conduction for Lithium Metal Batteries

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