An intermediate temperature garnet-type solid electrolyte-based molten lithium battery for grid energy storage

Jin, Yang; Li, Kai; Lang, Jialiang; Zhuo, Denys; Huang, Zeya; Wang, Chang‐An; Wu, Hui; Cui, Yi

doi:10.1038/s41560-018-0198-9

Cited by 177 publications

(132 citation statements)

References 33 publications

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“…[ 7,16 ] Very recently, a typical ceramic solid‐state electrolyte (Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 ) with tube configuration has been explored as an alternative for high‐temperature Li metal batteries due to its good chemical and thermal stability. [ 17 ] Despite of the great success in electrolytes, the high flowability of liquid metallic Li at high temperature causes safety concerns and requires more specific battery design that involves complex fabrication process and increases the battery cost for practical applications. Stable Li stripping/plating cycling was achieved for Li/granet composite structure fabricated by infiltrating metallic Li into 3D porous garnet framework on the dense garnet layer of at room temperature.…”

Section: Figurementioning

confidence: 99%

A Lithium Metal Anode Surviving Battery Cycling Above 200 °C

Wan

Bao

et al. 2020

Advanced Materials

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Lithium (Li) metal electrode cannot endure elevated temperature (e.g., >200 °C) with the regular battery configuration due to its low melting point (180.5 °C) and high reactivity, which restricts its application in high‐temperature Li metal batteries for energy storage and causes safety concerns for regular ambient‐temperature Li metal batteries. Herein, this work reports a Li5B4/Li composite featuring a 3D Li5B4 fibrillar framework filled with metallic Li, which maintains its initial structure at 325 °C in Ar atmosphere without leakage of the liquid Li. The capillary force caused by the porous structure of the Li4B5 fibrillar framework, together with its lithiophilic surface, restricts the leakage of liquid metallic Li and enables good thermal tolerance of the Li5B4/Li composite. Thus, it can be facilely operated for rechargeable high‐temperature Li metal batteries. Li5B4/Li electrodes are coupled with a garnet‐type ceramic electrolyte (Li6.5La3Zr0.5Ta1.5O12) to fabricate symmetric cells, which exhibit stable Li stripping/plating behaviors with low overpotential of ≈6 mV at 200 °C using a regular sandwich‐type cell configuration. This work affords new insights into realizing a stable Li metal anode for high‐temperature Li metal batteries with a simple battery configuration and high safety, which is different from traditional molten‐salt Li metal batteries using a pristine metallic Li anode.

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Section: Figurementioning

confidence: 99%

A Lithium Metal Anode Surviving Battery Cycling Above 200 °C

Wan

Bao

et al. 2020

Advanced Materials

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“…Compared with liquid electrolytes, solid electrolytes (SEs) with higher modulus and lower flammability can probably inhibit the growth of Li dendrites, which are expected to fundamentally solve the safety problems of LMBs . Meanwhile, to improve the energy density of solid‐state batteries, the most intriguing strategy is to couple Li metal anode with high‐voltage cathode .…”

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confidence: 99%

Extended Electrochemical Window of Solid Electrolytes via Heterogeneous Multilayered Structure for High‐Voltage Lithium Metal Batteries

et al. 2019

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“…The stability is critically important for LLZO to contact molten Li metal to reduce the interfacial resistance between the Li metal and electrolyte. Garnet‐type Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) exhibited extremely low ASR (as low as 0.4 Ω cm 2 ) with a liquid Li alloy at a temperature of 240 °C . Nevertheless, garnet‐type OCEs exhibits poor wettability against molten Li metal, even with external pressure …”

Section: Strategies For Reducing the Interfacial Resistancementioning

confidence: 99%

“…The reduction of LLZO may be kinetically inhibited due to the over-potential caused by a large interfacial resistance. Moreover, the reduction products of LLZO are Li [70] Nevertheless, garnet-type OCEs exhibits poor wettability against molten Li metal, even with external pressure. [71][72][73][74] Poor wettability between the garnet OCEs and Li metal results in microscopic gaps at the interface during the curing of the molten Li metal, leading to a large interfacial ASR between the Li anode and garnet OCEs.…”

Section: Interfacial Interactions Between Lithium Metal and Ocesmentioning

confidence: 99%

Reducing the Interfacial Resistance in All‐Solid‐State Lithium Batteries Based on Oxide Ceramic Electrolytes

2019

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All‐solid‐state lithium batteries (ASSLBs) are regarded as next‐generation advanced energy‐storage devices, owing to their high energy density and safety. The interfacial resistance is a crucial factor affecting the practical application of ASSLBs. ASSLBs based on oxide‐based ceramic electrolytes (OCEs) still exhibit poor electrochemical performance, owing to the large interfacial resistance. Area‐specific resistance values at the interfaces ranging from thousands of ohms to several ohms per square centimeter have been achieved using multiple strategies. This Review summarizes multiple existing advanced strategies used to reduce the interfacial resistance between OCEs and electrodes through interfacial engineering. We also propose some perspectives for the future development of ASSLBs based on OCEs.

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An intermediate temperature garnet-type solid electrolyte-based molten lithium battery for grid energy storage

Cited by 177 publications

References 33 publications

A Lithium Metal Anode Surviving Battery Cycling Above 200 °C

A Lithium Metal Anode Surviving Battery Cycling Above 200 °C

Extended Electrochemical Window of Solid Electrolytes via Heterogeneous Multilayered Structure for High‐Voltage Lithium Metal Batteries

Reducing the Interfacial Resistance in All‐Solid‐State Lithium Batteries Based on Oxide Ceramic Electrolytes

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