In situ gel electrolyte network guaranteeing ionic communication between solid electrolyte and cathode

Shin, Hyeju; Choi, Seong Jin; Choi, Soo Jung; Jang, Bo Yun; Jeong, Jihong; Cho, Yoon-Gyo; Lee, Sang Young; Song, Hyun‐Kon; Yu, Ji Haeng; Kim, Tae-Hee

doi:10.1016/j.jpowsour.2022.231926

Cited by 4 publications

(4 citation statements)

References 27 publications

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“…106.7, 113.0, and 111.1 mAh/g, respectively. These good rate capacities of the as-prepared C-GPEs based on a full cell at 0.1-0.3 C could be attributed to the better interfacial compatibility between the cathode and electrolyte [36,37]. These observations are higher than or comparable with recent reported works (as shown in Table S1 of the SM).…”

Section: Battery Performancessupporting

confidence: 79%

“…Figure 7b shows cross-sectional images investigating the close interface affinity between the cathode/as-prepared C-GPE-2/graphite anode, respectively. This tight contact between the cathode and the as-prepared electrolyte enables Li-ion communication and facilitates cycling performance [15,36,37]. Moreover, XRD tests were utilized to measure the crystallization of the as-prepared C-GPEs.…”

Section: In Situ Cross-linking Gel Polymer Electrolytesmentioning

confidence: 99%

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Cross-Linked Gel Polymer Electrolyte Based on Multiple Epoxy Groups Enabling Conductivity and High Performance of Li-Ion Batteries

Zhang

Bae

Jin

et al. 2023

Gels

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The low ionic conductivity and unstable interface of electrolytes/electrodes are the key issues hindering the application progress of lithium-ion batteries (LiBs). In this work, a cross-linked gel polymer electrolyte (C-GPE) based on epoxidized soybean oil (ESO) was synthesized by in situ thermal polymerization using lithium bis(fluorosulfonyl)imide (LiFSI) as an initiator. Ethylene carbonate/diethylene carbonate (EC/DEC) was beneficial for the distribution of the as-prepared C-GPE on the anode surface and the dissociation ability of LiFSI. The resulting C-GPE-2 exhibited a wide electrochemical window (of up to 5.19 V vs. Li+/Li), an ionic conductivity (σ) of 0.23 × 10−3 S/cm at 30 °C, a super-low glass transition temperature (Tg), and good interfacial stability between the electrodes and electrolyte. The battery performance of the as-prepared C-GPE-2 based on a graphite/LiFePO4 cell showed a high specific capacity of ca. 161.3 mAh/g (an initial Coulombic efficiency (CE) of ca. 98.4%) with a capacity retention rate of ca. 98.5% after 50 cycles at 0.1 C and an average CE of about ca. 98.04% at an operating voltage range of 2.0~4.2 V. This work provides a reference for designing cross-linking gel polymer electrolytes with high ionic conductivity, facilitating the practical application of high-performance LiBs.

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Section: Battery Performancessupporting

confidence: 79%

Section: In Situ Cross-linking Gel Polymer Electrolytesmentioning

confidence: 99%

Cross-Linked Gel Polymer Electrolyte Based on Multiple Epoxy Groups Enabling Conductivity and High Performance of Li-Ion Batteries

Zhang

Bae

Jin

et al. 2023

Gels

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“…By employing in situ solidification techniques to create cross-linked polymer networks, researchers have successfully enhanced the crucial properties of solid polymer electrolytes. 255,256…”

Section: Electrochemical and Chemical Compatibility Of Electrode–sse ...mentioning

confidence: 99%

Computational approach inspired advancements of solid-state electrolytes for lithium secondary batteries: from first-principles to machine learning

Zheng,

Zhou,

Zhu

2024

Chem. Soc. Rev.

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“…Another typical approach to improve the interfacial contact is to add soft ionic conductors, such as liquid electrolytes, ionic liquids, plastic crystal electrolytes, polymer SSEs, and in situ gel electrolytes at the solid-state cathode/LLZO interface. [108][109][110][111][112] In terms of cost and processing ease, liquid electrolytes are the most advanced soft ionic conductors. However, they frequently react with LLZO, decreasing the energy density and thermal stability of the battery.…”

Section: Interfacial Contact Issues and Corresponding Strategiesmentioning

confidence: 99%

Optimization strategies for key interfaces of LLZO-based solid-state lithium metal batteries

Chu,

Li,

Wang

et al. 2024

Mater. Chem. Front.

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In situ gel electrolyte network guaranteeing ionic communication between solid electrolyte and cathode

Cited by 4 publications

References 27 publications

Cross-Linked Gel Polymer Electrolyte Based on Multiple Epoxy Groups Enabling Conductivity and High Performance of Li-Ion Batteries

Cross-Linked Gel Polymer Electrolyte Based on Multiple Epoxy Groups Enabling Conductivity and High Performance of Li-Ion Batteries

Computational approach inspired advancements of solid-state electrolytes for lithium secondary batteries: from first-principles to machine learning

Optimization strategies for key interfaces of LLZO-based solid-state lithium metal batteries

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