Analysis of Electrochemical Impedance of Dilithium Phthalocyanine

Munichandraiah, N.; Sakthivel, Kavitha; Scanlon, L. G.

doi:10.1149/1.1872592

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…In a previous work, a pressed pellet of dilithium phthalocyanine (Li 2 Pc) recrystallized from acetone/toluene showed that both ionic and electronic conduction takes place within Li 2 Pc (1). The specific ionic and electronic conductivity for this pressed pellet at 25°C were determined to be 1.56 X 10 -7 and 1.29 X 10 -8 S/cm, respectively.…”

Section: Introductionmentioning

confidence: 90%

Low Energy of Activation Lithium-ion Conducting Channel

Scanlon,

Lucente,

Lawson

et al. 2009

Meet. Abstr.

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Section: Introductionmentioning

confidence: 90%

Low Energy of Activation Lithium-ion Conducting Channel

Scanlon,

Lucente,

Lawson

et al. 2009

Meet. Abstr.

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“…18 It is a mixed electronic-ionic conductor and the extent of ionic conduction is reported to be larger than that of the electronic conduction. 19 Scanlon et al…”

Section: Introductionmentioning

confidence: 99%

Dilithium phthalocyanine - A Single Ion Transport Interfacial layer for Solid-State Lithium Batteries

Chesta,

Kalleshappa,

Srinivasan

2024

Preprint

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All-solid-state batteries possess several advantages including high safety, flexibility to use high-capacity metal anodes and are projected to be the next generation energy storage devices. Garnet-type cubic Li7La3Zr2O12 (LLZO) solid electrolyte is of particular interest due to its high ionic conductivity under ambient conditions and compatibility with Li metal. However, large electrode/electrolyte interfacial resistance constraints their development. Herein, the use of a highly lithium ion conducting dilithium phthalocyanine (Li2Pc) as an interlayer is proposed to effectively suppress the high impedance at the interface thus improving the electrode-electrolyte contact. Fast Li+ mobility and high dielectric constant of dilithium phthalocyanine enhance the kinetics of Li+ transport across the interface. A significant reduction in overpotential and very stable stripping/plating cycling are observed in lithium symmetric cells upon introducing Li2Pc interlayer as compared to the use of bare tantalum doped lithium lanthanum zirconium oxide (LLZTO) electrolyte. Cells comprising interlayer-modified Li|LLZTO|LiFePO4 show high capacity with excellent cycling and rate capability. The performance of full cells using lithiated graphite and lithium titanate anodes has also been evaluated. This study presents a promising application of garnet electrolytes towards the advancement of solid-state lithium batteries.

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