A durable and safe solid-state lithium battery with a hybrid electrolyte membrane

Zhang, Wenqiang; Nie, Jinhui; Fan, Li; Wang, Zhong Lin; Sun, Chunwen

doi:10.1016/j.nanoen.2018.01.028

Cited by 492 publications

(305 citation statements)

References 48 publications

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“…[28] Ta king PEO-LiTFSI-LLZO HSSE as an example, Figure 4d shows the different Li + pathways with various LLZO contents. [30] The solid-state LiFePO 4 (LFP) cell consisting of such HSSE delivers ac apacity of 110mAh g À1 after 180 cycles at 0.5 Cr ate. With additional liquid additive, the ion transport pathway shifts to liquid-modified PEO and the ionic conductivity is significantly enhanced due to the increased ionm obility and re-established ion conduction channels.…”

Section: Composite Polymer-inorganic Hssesmentioning

confidence: 99%

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Liu

et al. 2018

Chemistry A European J

132

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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: Composite Polymer-inorganic Hssesmentioning

confidence: 99%

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Liu

et al. 2018

Chemistry A European J

132

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“…[1,49] Recently, Nan et al reported that dispersing Li 6.75 La 3 Zr 1.75 Ta 0.25 O 12 in N,N-dimethylformamide triggered the partial chemical dehydrofluorination of PVDF, thereby increasing the Li conductivity of the composite compared to the individual PVDF membrane. [49,54] To overcome the high interfacial resistance, tens of mLs of liquid electrolyte have been added to the interface. [49][50][51][52][53] Until now, PVDFgarnet composites have been reported as SSEs for LIBs only by a few research groups.…”

Section: Introductionmentioning

confidence: 99%

“…[49] Indeed, PVDF-based electrolytes have shown improved electrochemical, thermal, and mechanical stability compared with PEO-based electrolytes. [54] Alternatively, the electrode may first be infiltrated with a liquid electrolyte-containing solution (i. e. PEO/ lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)/ethylene carbonate/acetonitrile) for interfacial modification and subsequently dried at 60 8C. [49,54] To overcome the high interfacial resistance, tens of mLs of liquid electrolyte have been added to the interface.…”

Section: Introductionmentioning

confidence: 99%

A Ceramic‐PVDF Composite Membrane with Modified Interfaces as an Ion‐Conducting Electrolyte for Solid‐State Lithium‐Ion Batteries Operating at Room Temperature

Kwok

et al. 2018

ChemElectroChem

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Solid-state batteries hold great promise because of their safety and high projected energy density. However, the sizeable interfacial resistance between the electrodes and the electrolyte of such batteries is a significant bottleneck in the development of this technology. In this work, we develop a Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) and polyvinylidene fluoride (PVDF) solid-state composite membrane characterized by high conductivity, tensile strength, and flexibility as well as low impedance if interfacially modified by a minute amount of liquid electrolyte. A solid-state lithium-ion battery using this electrolyte with LiFePO 4 and Li as electrodes delivers excellent rate capability and cycling stability at room temperature. In particular, the battery shows an initial discharge capacity of 155 mAh g À1 and, after 100 cycles at 1C, of 145 mAh g À1 . Even at 4C, the discharge capacity is 96 mAh g À1 . Our study suggests that the interfacially modified LLZTO-PVDF membrane is a promising electrolyte for solid-state lithium-ion batteries.

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“…[33] A more recent work by Maraschky and Akolkar indicated that pulsed current may mitigate the concentration depletion of Li ions within the solid electrolyte interphase (SEI), because the diffusion time constant of Li ions has a value of 1 ms for a 10 nm thick SEI and thereby the concentration gradient of Li ions formed across the SEI during charging can be nullified within 1 ms of rest period. [35][36][37] A unique character of R-TENGs is that their voltage and current outputs are high-frequency sinusoidal waveforms. [35][36][37] A unique character of R-TENGs is that their voltage and current outputs are high-frequency sinusoidal waveforms.…”

mentioning

confidence: 99%

“…[35][36][37] A unique character of R-TENGs is that their voltage and current outputs are high-frequency sinusoidal waveforms. [35][36][37] A unique character of R-TENGs is that their voltage and current outputs are high-frequency sinusoidal waveforms.…”

mentioning

confidence: 99%

Suppressing Lithium Dendrite Growth via Sinusoidal Ripple Current Produced by Triboelectric Nanogenerators

Zhang

Wang

2019

Advanced Energy Materials

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growth with severe electrolyte consumption in most liquid organic electrolytes, especially in carbonate-based ones. [4][5][6][7] To realize viable application of Li metal anodes, continuous effort has been made for years to understand the mechanism of Li deposition and tackle the formation of dendrites. [8][9][10][11] To this end, much work has been devoted in designing Li hosts and substrates, [12][13][14][15] using electrolyte additives [16][17][18][19][20] or solid electrolytes, [21][22][23] and introducing protection films. [24][25][26][27][28][29] For examples, Guo et al. reported that 3D Cu with a large number of charge centers and nucleation sites facilitate the formation of relatively even Li surface. [12] Zhang and co-workers demonstrated a self-healing electrostatic shield mechanism for dendrite-free lithium deposition by controlling Li-ion diffusion on the electrode surface. [20] In recent years, the effect of charging methods on suppressing dendrite growth during Li deposition has attracted increasing attention. [30][31][32] He et al. studied the effectiveness of pulse current charging on dendrite suppression by choosing proper on/ off times of the pulses. [30] Whittingham and co-workers also showed that pulse current charging improves lithium cycling efficiency under diffusion-controlled conditions. [31] Miller et al. employed a coarse-grained simulation model to prove that shorter pulse durations can lead to lower tendency of dendrite formation. [32] This is further confirmed by Hoffmann et al. who demonstrated that 1 ms pulse charging can inhibit the dendrite propagation more effectively than 20 ms pulse or constant current charging. [33] A more recent work by Maraschky and Akolkar indicated that pulsed current may mitigate the concentration depletion of Li ions within the solid electrolyte interphase (SEI), because the diffusion time constant of Li ions has a value of 1 ms for a 10 nm thick SEI and thereby the concentration gradient of Li ions formed across the SEI during charging can be nullified within 1 ms of rest period. [34] The above simulation and experimental studies suggest that interval charging could improve homogeneous nucleation of Li by controlling the diffusion process, therefore high-frequency pulse charging is beneficial for suppressing the growth of Li dendrites.Recently, rotary triboelectric nanogenerators (R-TENGs) originating from contact electrification have been developed and successfully demonstrated as mechanical energy harvesters. [35][36][37] A unique character of R-TENGs is that their voltage and current outputs are high-frequency sinusoidal waveforms. Despite that the effect of sinusoidal ripple current

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A durable and safe solid-state lithium battery with a hybrid electrolyte membrane

Cited by 492 publications

References 48 publications

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

A Ceramic‐PVDF Composite Membrane with Modified Interfaces as an Ion‐Conducting Electrolyte for Solid‐State Lithium‐Ion Batteries Operating at Room Temperature

Suppressing Lithium Dendrite Growth via Sinusoidal Ripple Current Produced by Triboelectric Nanogenerators

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