Extensively Reducing Interfacial Resistance by the Ultrathin Pt Layer between the Garnet-Type Solid-State Electrolyte and Li–Metal Anode

Despite excellent ionic conductivity and electrochemical oxidative stability, the emerging halide-based solid electrolytes suffer from inherent instability toward Li metal anode. A thick and resistive interface can be formed by...

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A quasi-solid-state rechargeable cell with high energy and superior safety enabled by stable redox chemistry of Li2S in gel electrolyte

Energy & Environmental Science ◽

10.1039/d0ee03037f ◽

2021 ◽

Author(s):

Xiangyu Meng ◽

Yuzhao Liu ◽

Zhiyu Wang ◽

Yizhou Zhang ◽

Xingyu Wang ◽

...

Keyword(s):

Solid State ◽

Redox Chemistry ◽

High Energy ◽

Gel Electrolyte ◽

Organic P ◽

Li Ion Batteries ◽

Metal Anode ◽

Rechargeable Cell ◽

Li Ion ◽

Li Metal Anode

Recent years have witnessed a thriving pursuit of high-energy Li metal batteries for replacing existing Li-ion batteries. However, the cell chemistry involving extremely reactive Li metal anode in flammable organic...

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Interfacial properties and Li-ion dynamics between Li3OCl solid electrolyte and Li metal anode for all solid state Li metal batteries from first principles study

Electrochimica Acta ◽

10.1016/j.electacta.2020.135622 ◽

2020 ◽

Vol 334 ◽

pp. 135622

Author(s):

M.S. Wu ◽

B. Xu ◽

W.W. Luo ◽

B.Z. Sun ◽

C.Y. Ouyang

Keyword(s):

Solid State ◽

Solid Electrolyte ◽

First Principles ◽

Interfacial Properties ◽

Ion Dynamics ◽

Metal Anode ◽

First Principles Study ◽

Li Ion ◽

Li Metal Anode

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Mastering the interface for advanced all-solid-state lithium rechargeable batteries

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1615912113 ◽

2016 ◽

Vol 113 (47) ◽

pp. 13313-13317 ◽

Cited By ~ 138

Author(s):

Yutao Li ◽

Weidong Zhou ◽

Xi Chen ◽

Xujie Lü ◽

Zhiming Cui ◽

...

Keyword(s):

Solid State ◽

Solid Electrolyte ◽

Solid Electrolyte Interphase ◽

Rechargeable Batteries ◽

Ion Conductivity ◽

Rhombohedral Structure ◽

Interfacial Resistance ◽

Lithium Anode ◽

Metal Anode ◽

Li Ion

A solid electrolyte with a high Li-ion conductivity and a small interfacial resistance against a Li metal anode is a key component in all-solid-state Li metal batteries, but there is no ceramic oxide electrolyte available for this application except the thin-film Li-P oxynitride electrolyte; ceramic electrolytes are either easily reduced by Li metal or penetrated by Li dendrites in a short time. Here, we introduce a solid electrolyte LiZr2(PO4)3 with rhombohedral structure at room temperature that has a bulk Li-ion conductivity σLi = 2 × 10−4 S⋅cm−1 at 25 °C, a high electrochemical stability up to 5.5 V versus Li+/Li, and a small interfacial resistance for Li+ transfer. It reacts with a metallic lithium anode to form a Li+-conducting passivation layer (solid-electrolyte interphase) containing Li3P and Li8ZrO6 that is wet by the lithium anode and also wets the LiZr2(PO4)3 electrolyte. An all-solid-state Li/LiFePO4 cell with a polymer catholyte shows good cyclability and a long cycle life.

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Novel Structured Electrolyte for All-Solid-State Lithium Ion Batteries

ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology ◽

10.1115/fuelcell2015-49384 ◽

2015 ◽

Author(s):

Wei Liu ◽

Ryan Milcarek ◽

Kang Wang ◽

Jeongmin Ahn

Keyword(s):

Solid State ◽

Lithium Ion Batteries ◽

Solid Electrolytes ◽

Material Selection ◽

Layer Structure ◽

Gel Polymer Electrolyte ◽

Lithium Ion ◽

Interfacial Resistance ◽

Solid State Electrolyte ◽

Ceramic Electrolyte

In this study, a multi-layer structure solid electrolyte (SE) for all-solid-state electrolyte lithium ion batteries (ASSLIBs) was fabricated and characterized. The SE was fabricated by laminating ceramic electrolyte Li1.3Al0.3Ti1.7(PO4)3 (LATP) with polymer (PEO)10-Li(N(CF3SO2)2 electrolyte and gel-polymer electrolyte of PVdF-HFP/ Li(N(CF3SO2)2. It is shown that the interfacial resistance is generated by poor contact at the interface of the solid electrolytes. The lamination protocol, material selection and fabrication method play a key role in the fabrication process of practical multi-layer SEs.

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Surface Chemistry Mechanism of Ultra-Low Interfacial Resistance in the Solid-State Electrolyte Li7La3Zr2O12

Chemistry of Materials ◽

10.1021/acs.chemmater.7b03002 ◽

2017 ◽

Vol 29 (18) ◽

pp. 7961-7968 ◽

Cited By ~ 238

Author(s):

Asma Sharafi ◽

Eric Kazyak ◽

Andrew L. Davis ◽

Seungho Yu ◽

Travis Thompson ◽

...

Keyword(s):

Solid State ◽

Surface Chemistry ◽

Interfacial Resistance ◽

Solid State Electrolyte

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Modification of Lithium Metal Anode and Solid-State Electrolyte Interface with a Gel Electrolyte

10.1149/osf.io/7m95s ◽

2020 ◽

Author(s):

Lawrence Renna ◽

Francois-Guillame Blanc ◽

Vincent Giordani

Keyword(s):

Solid State ◽

Room Temperature ◽

Gel Polymer Electrolyte ◽

High Energy ◽

Gel Electrolyte ◽

High Energy Density ◽

Interfacial Resistance ◽

Metal Anode ◽

Solid State Electrolytes ◽

Metal Anodes

Solid-state electrolytes are continually being explored for Li-ion batteries due to their enhanced safety and their enabling of high energy density active materials, particularly Li metal anodes. However, the interface between solid-state electrolytes and Li metal anodes are prone to high impedance due to poor contact, limiting their applicability. Introducing a thin gel polymer electrolyte interlayer to conformally coat solid electrolytes can improve the interfacial contact of Li metal anode and thus reduce the interfacial resistance. Here we used a plasticized poly(ethylene oxide)-based electrolyte with high concentrations of bis(trifluoromethane)sulfonamide lithium (LiTFSI) that show 100% amorphous character. These electrolytes show Li+ conductivity as high as σ = 2.9×10-4 S/cm at room temperature. We discovered by thermogravimetric analysis (TGA) with off-gas analysis in conjunction with nuclear magnetic resonance (NMR) spectroscopy that the electrolyte films had absorbed N-methyl-2-pyrrolidone (NMP) vapors to form a gel electrolyte. We incorporated the gel electrolyte as an interfacial modification layer between LLZO and Li metal electrodes and found a 58 times reduction in the area specific resistance (ASR) at room temperature.

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