Visualizing percolation and ion transport in hybrid solid electrolytes for Li–metal batteries

Zaman, Wahid; Hortance, Nicholas; Dixit, Marm; Andrade, Vincent De; Hatzell, Kelsey B.

doi:10.1039/c9ta05118j

Cited by 84 publications

(81 citation statements)

References 41 publications

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“…Notably, there are signicant variations in both the resulting polarization overpotential and susceptibility to fracture, highlighting the need for an optimally designed hybrid structure for ideal material and transport properties. A multitude of other research with conductive oxides as llers have also been conducted with garnets, 25,28,30,81,[129][130][131] NASICONs, 31,[132][133][134][135] LISI-CONs, 136 and perovskites. 34,[137][138][139] In comparison to the oxide-polymer hybrid electrolytes, there is only a limited amount of work on sulde-polymer composites available.…”

Section: Conductive Inorganic Component: Importance Of the 3d Networkmentioning

confidence: 99%

“…Micro-and nano-X-ray computed tomography (CT) are non-invasive techniques that can characterize morphological and structural properties. 4,182 Imaging with X-rays at high energies (keV) and low exposure times causes less polymer degradation and enables larger eld-of-views ($100 mm for Nano CT and several mm for Micro CT). 183 Micro-CT techniques can achieve sub-micron resolutions while nano-CT techniques can achieve resolutions <50 nm.…”

Section: Visualization Toolsmentioning

confidence: 99%

“…5(a)). 4,182 Fig. 5b demonstrates the organization and morphology of garnet Al-doped LLZO particles (20 vol%) within a tape casted PEO-LLZO solid electrolyte.…”

Section: Visualization Toolsmentioning

confidence: 99%

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Polymer-based hybrid battery electrolytes: theoretical insights, recent advances and challenges

et al. 2021

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Section: Conductive Inorganic Component: Importance Of the 3d Networkmentioning

confidence: 99%

Section: Visualization Toolsmentioning

confidence: 99%

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Polymer-based hybrid battery electrolytes: theoretical insights, recent advances and challenges

et al. 2021

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“…It has been demonstrated that the dispersion of ceramic nanoparticles or nanofibers, such as SiO 2 , Al 2 O 3 , Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO), or Li 1.5 Al 0.5 Ge 1.5 (PO4) 3 (LAGP), into the polymer matrices can increase the ionic conductivities, broaden the electrochemical windows, and improve the mechanical strengths of PEO-based solid polymer electrolytes (SPEs) [ 24 , 25 , 26 , 27 , 28 ]. In addition, it has also been shown that the interaction between PEO and fillers are dependent not only on different filler materials but also the morphology and size of fillers.…”

Section: Introductionmentioning

confidence: 99%

Solid Polymer Electrolytes with Flexible Framework of SiO2 Nanofibers for Highly Safe Solid Lithium Batteries

et al. 2020

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Composite electrolytes consisting of polymers and three-dimensional (3D) fillers are considered to be promising electrolytes for solid lithium batteries owing to their virtues of continuous lithium-ion pathways and good mechanical properties. In the present study, an electrolyte with polyethylene oxide–lithium (bis trifluoromethyl) sulfate–succinonitrile (PLS) and frameworks of three-dimensional SiO2 nanofibers (3D SiO2 NFs) was prepared. Taking advantage of the highly conductive interfaces between 3D SiO2 NFs and PLS, the total conductivity of the electrolyte at 30 °C was approximately 9.32 × 10−5 S cm−1. With a thickness of 27 μm and a tensile strength of 7.4 MPa, the electrolyte achieved an area specific resistance of 29.0 Ω cm2. Moreover, such a 3D configuration could homogenize the electrical field, which was beneficial for suppressing dendrite growth. Consequently, Li/LiFePO4 cells assembled with PLS and 3D SiO2 NFs (PLS/3D SiO2 NFs), which delivered an original specific capacity of 167.9 mAh g−1, only suffered 3.28% capacity degradation after 100 cycles. In particular, these cells automatically shut down when PLS was decomposed above 400 °C, and the electrodes were separated by the solid framework of 3D SiO2 NFs. Therefore, the solid lithium batteries based on composite electrolytes reported here offer high safety at elevated temperatures.

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“…[ 16–19 ] The combination of oxide‐based SEs and polymers have paved new ways to create better electrolytes which incorporate both the high ionic conductivity of the oxide‐based SE and the stable mechanical properties of polymers. [ 20–25 ]…”

Section: Introductionmentioning

confidence: 99%

3D Ion‐Conducting, Scalable, and Mechanically Reinforced Ceramic Film for High Voltage Solid‐State Batteries

Kim

Han

Lim

et al. 2020

Adv Funct Materials

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Concerning the safety aspects of Li+ ion batteries, an epoxy‐reinforced thin ceramic film (ERTCF) is prepared by firing and sintering a slurry‐casted composite powder film. The ERTCF is composed of Li+ ion conduction channels and is made of high amounts of sintered ceramic Li1+xTi2‐xAlx(PO4)3 (LATP) and epoxy polymer with enhanced mechanical properties for solid‐state batteries. The 2D and 3D characterizations are conducted not only for showing continuous Li+ ion channels thorough LATP ceramic channels with over 10−4 S cm−1 of ionic conductivity but also to investigate small amounts of epoxy polymer with enhanced mechanical properties. Solid‐state Li+ ion cells are fabricated using the ERTCF and they show initial charge–discharge capacities of 139/133 mAh g−1. Furthermore, the scope of the ERTCF is expanded to high‐voltage (>8 V) solid‐state Li+ ion batteries through a bipolar stacked cell design. Hence, it is expected that the present investigation will significantly contribute in the preparation of the next generation reinforced thin ceramic film electrolytes for high‐voltage solid‐state batteries.

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Visualizing percolation and ion transport in hybrid solid electrolytes for Li–metal batteries

Abstract: Hybrid solid state electrolyte structure was imaged using synchrotron nanotomography. Accessible surface area of ceramic particles in the electrolytes governs ion transport.

Cited by 84 publications

References 41 publications

Polymer-based hybrid battery electrolytes: theoretical insights, recent advances and challenges

Polymer-based hybrid battery electrolytes: theoretical insights, recent advances and challenges

Solid Polymer Electrolytes with Flexible Framework of SiO2 Nanofibers for Highly Safe Solid Lithium Batteries

3D Ion‐Conducting, Scalable, and Mechanically Reinforced Ceramic Film for High Voltage Solid‐State Batteries

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