High-Power Li-Metal Anode Enabled by Metal-Organic Framework Modified Electrolyte

Bai, Songyan; Sun, Yang Kook; Yi, Jin; He, Yeping; Qiao, Yu; Zhou, Haoshen

doi:10.1016/j.joule.2018.07.010

Cited by 245 publications

(172 citation statements)

References 67 publications

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“…to yield anionic phase with al arge content of free metal cations residing in the pores. [65] It was found that TFSI À anionsw ere preferentially localized within the micropores of MOF,r esulting in homogenous Li + transfer channels. Recently,S hen et al demonstrated that quasi-solid lithium ion conductors can be fabricated by constructing biomimetici on channels in MOFs.…”

Section: Open-framework-liquid Hssesmentioning

confidence: 99%

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Liu

et al. 2018

Chemistry A European J

129

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Conventional liquid electrolytes for lithium batteries usually suffer from irreversible decomposition and safety concerns. Solid state electrolytes (SSEs) have been considered as the key for advanced lithium batteries with improved energy density and safety, whereas challenges remain for polymer and inorganic SSEs. Recently, hybrid solid-state electrolytes (HSSEs) that integrate the merits of different electrolyte systems have been under intensive study. Herein, we summarize the recent progress of HSSEs with different compositions and structures. The design principle of each type of HSSEs are discussed, as well as their ionic conducting mechanism, electrochemical performance and effects of compositional/structural control. Finally, challenges and perspectives are provided for the future development of HSSEs and solid-state lithium batteries.

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Section: Open-framework-liquid Hssesmentioning

confidence: 99%

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Liu

et al. 2018

Chemistry A European J

129

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“…Our group reported the first application of MOFs to Li metal electrodes: modifying the separator with an amine‐functionalized Ti‐containing MOF (NH 2 ‐MIL‐125‐Ti) increased the transference number of Li ions and enhanced the cycling stability of the Li metal anode . In another study, a Cu‐containing MOF (HKUST‐1) with a desirable pore size for immobilizing electrolyte anions enabled dendrite‐free Li deposition and long‐term stability at a high current density . Despite these progresses, the state‐of‐the‐art Li metal electrodes still fall short in efficiency and stability for practical applications.…”

Section: Introductionmentioning

confidence: 99%

Metal Organic Framework Derivative Improving Lithium Metal Anode Cycling

Zhong

Lin

Wang

et al. 2020

Adv Funct Materials

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This work demonstrates a new approach in using metal organic framework (MOF) materials to improve Li metal batteries, a burgeoning rechargeable battery technology. Instead of using the MIL‐125‐Ti MOF structure directly, the material is decomposed into intimately‐mixed amorphous titanium dioxide and crystalline terephthalic acid. The resulting composite material outperforms the oxide alone, the organic component alone, and the parent MOF in suppressing Li dendrite growth and extending cycle life of Li metal electrodes. Coated on a commercial polypropylene separator, this material induces the formation of a desirable solid electrolyte interphase layer comprising mechanically flexible organic species and ionically conductive lithium nitride species, which in turn leads to Li||Cu and Li||Li cells that can stably operate for hundreds of charging–discharging cycles. In addition, this material strongly adsorbs lithium polysulfides and can also benefit the cathode of lithium–sulfur batteries.

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“…However, in IUP electrolyte, since the EMIM + and TFSI − chains are much larger than Li + , the movement of EMIM + and TFSI − chains through the nanopore in MOF become more difficult. Nanopores in MOF structure restrict the movement of [EMIM] + and [TFSI] − ions, meanwhile they allow Li + transport freely in the membrane along a continuous channel . Low activation energy and high transference number make the IUP 1.8 electrolyte be a promising candidate for high performance solid state batteries.…”

Section: Resultsmentioning

confidence: 99%

“…Nanopores in MOF structure restrict the movement of [EMIM] + and [TFSI] À ions, meanwhile they allow Li + transport freely in the membrane along a continuous channel. [32] Low activation energy and high transference number make the IUP 1.8 electrolyte be a promising candidate for high performance solid state batteries.…”

Section: Characterization Of Iup Composite Electrolyte Membranementioning

confidence: 99%

Flexible Quasi‐Solid‐State Composite Electrolyte Membrane Derived from a Metal‐Organic Framework for Lithium‐Metal Batteries

Liu

Sun

2020

ChemElectroChem

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In this work, we developed a new kind of flexible Li‐ion conductor membrane consisting of poly(vinylidene fluoride‐co‐hexafluoropropylene) matrix and ionic liquid absorbed in metal‐organic framework (MOF) particles. This composite membrane facilitates a homogeneous Li‐ion flux and exhibits an excellent ionic conductivity of about 4.3×10−4 S cm−1 at room temperature, a wide electrochemical window of 4.8 V (vs. Li+/Li), as well as good thermal stability and flexibility. The quasi‐solid‐state lithium metal battery assembled with the composite electrolyte membrane, a Li metal anode, and a composite cathode shows low interface impedance and a reversible discharge capacity of 149 mAh g−1 within 300 cycles at 0.1 C. This new kind of quasi‐solid‐state electrolyte membrane is a promising candidate for solid‐state lithium‐metal batteries with a high energy density.

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High-Power Li-Metal Anode Enabled by Metal-Organic Framework Modified Electrolyte

Cited by 245 publications

References 67 publications

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Metal Organic Framework Derivative Improving Lithium Metal Anode Cycling

Flexible Quasi‐Solid‐State Composite Electrolyte Membrane Derived from a Metal‐Organic Framework for Lithium‐Metal Batteries

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