Perspectives on Li Dendrite Penetration in Li7La3Zr2O12‐Based Solid‐State Electrolytes and Batteries: Materials, Interfaces, and Charge Transfer

Biao, Jie; Bai, Chen; Ma, Jiabin; Liu, Ming; Kang, Feiyu; Cao, Yidan; He, Yan‐Bing

doi:10.1002/aenm.202303128

Cited by 6 publications

(2 citation statements)

References 311 publications

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“…Within the SSE layers, Li nucleation and dendrite penetration are prone to occur in the regions of grain boundaries due to the electronic conductivity and the inhomogeneous chemical composition of grain boundaries. 29 As a result, some grain boundary modification strategies were proposed to suppress Li dendrites.…”

Section: Strategies For Suppressing LI Dendritesmentioning

confidence: 99%

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Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Yang,

Wang,

Guo

et al. 2024

J. Mater. Chem. A

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Section: Strategies For Suppressing LI Dendritesmentioning

confidence: 99%

“…28 Due to the tip effect, Li dendrites will accumulate as Li is deposited at these preferential nucleation sites. 29…”

Section: Introductionmentioning

confidence: 99%

Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Yang,

Wang,

Guo

et al. 2024

J. Mater. Chem. A

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Leakage‐Free and Non‐Flammable High‐Safety Li Metal Battery Using 85.3 wt.% Multifunctional Organic Lithium Salt as Quasi‐Solid Electrolyte

Liu,

Qiao,

Lin

et al. 2024

Adv Funct Materials

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Safety issues of lithium metal batteries caused by leakageable, inflammable, and unstable electrolytes and lithium dendrites are a major concern worldwide. Herein, an ultra‐concentrated electrolyte composed of 85.3 wt.% of a novel phosphate quaternary ammonium lithium salt (PQ‐3Li) in fluoroethylene carbonate is prepared, labeled as CPQE. CPQE reveals an exceptional ionic conductivity (0.32 × 10−3 S cm−1), a high lithium transference number (0.66), an electrochemical stability window above 6 V, and a superb fire resistance. Li|CPQE|Li cells show stable cycling performance without lithium dendrites for 1000 h, and a solid‐electrolyte‐interface layer with an inorganics‐rich inner layer and an organics‐rich outer layer is confirmed using computation simulation, electron probe microanalysis, and X‐ray photoelectron spectroscopy. Li|CPQE|NCM cells present a discharge capacity of 162 mAh g−1 at 0.1 C, and a Coulombic efficiency of up to 99%. A commercial LED bulb can be lighted up by the Li|CPQE|NCM cell for at least 1 h without performance deterioration while prolonging the cycling time. The fabricated CPQE‐based pouch cells own terrific safety and power supply capacity. No leakage, thermal runaway, combustion, or explosion behavior is detected during the nailing penetration test, implying large potential applications for developing the next generation of high‐safety lithium batteries.

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Trace Fluorinated Carbon Dots Driven Li‐Garnet Solid‐State Batteries

Zhu,

Xu,

et al. 2024

Angewandte Chemie

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Garnet solid‐state electrolyte Li6.5La3Zr1.5Ta0.5O12 (LLZTO) holds significant promise. However, the practical utilization has been seriously impeded by the poor contact of Li|garnet and electron leakage. Herein, one new type garnet‐based solid‐state batteries is prososed with high‐performance through the disparity in interfacial energy, induced by the reaction between trace fluorinated carbon dots (FCDs) and Li. The work of adhesion of Li|garnet is increased by the acquired Li‐FCD composite, which facilitates an intimate Li|garnet interface with the promoted uniform Li+ deposition, revealed by density functional theory (DFT) calculations. It is futher validated that a concentrated C‐Li2O‐LiF component at the Li|garnet interface is spontaneously constructed, due to the the significant disparity in interfacial energy between C‐Li2O‐LiF|LLZTO and C‐Li2O‐LiF|Li. Furthermore, The electron transport and Li dendrites penetration are effectively hindered by the formed Li2O and LiF. The Li‐FCD|LLZTO|Li‐FCD symmetrical cells demonstrate stable cycling performance for over 3000 hours at 0.3 mA cm−2 and 800 hours at 0.5 mA cm−2. Furthermore, the LFP|garnet|Li‐FCD full cell exhibit remarkable cycling performance (91.6% capacity retention after 500 cycles at 1 C). Our research has revealed a novel approach to establish a dendrite‐free Li|garnet interface, laying the groundwork for future advancements in garnet‐based solid‐state batteries.

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Perspectives on Li Dendrite Penetration in Li₇La₃Zr₂O₁₂‐Based Solid‐State Electrolytes and Batteries: Materials, Interfaces, and Charge Transfer

Cited by 6 publications

References 311 publications

Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Leakage‐Free and Non‐Flammable High‐Safety Li Metal Battery Using 85.3 wt.% Multifunctional Organic Lithium Salt as Quasi‐Solid Electrolyte

Trace Fluorinated Carbon Dots Driven Li‐Garnet Solid‐State Batteries

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