Effect of lithium salts on room temperature ionic conductivity of W, Y and Al co-doped Li7La3Zr2O12 solid electrolyte

The extremely low room-temperature ionic conductivity of solid-state polymer electrolytes (SPEs) ranging from 10-7 to 10-5 S cm-1 seriously restricts their practical application in solid-state lithium metal batteries (LMBs). Herein,...

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Solvothermal synthesis high lithium ionic conductivity of Gd-doped Li1.3 Al0.3Ti1.7(PO4)3 solid electrolyte

Functional Materials Letters ◽

10.1142/s1793604721400026 ◽

2021 ◽

pp. 2140002

Author(s):

Mingxia Fan ◽

Xiangyu Deng ◽

Anqiao Zheng ◽

Songdong Yuan

Keyword(s):

Ionic Conductivity ◽

Solid Electrolyte ◽

Solid Electrolytes ◽

Room Temperature ◽

Lithium Ion ◽

High Ionic Conductivity ◽

Doping Content ◽

First Time ◽

Maximum Content ◽

Material Price

NASICON-type Li[Formula: see text]Al[Formula: see text]Ti[Formula: see text](PO[Formula: see text] (LATP) solid electrolytes have been widely studied because of its stability in the air, low material price and high ionic conductivity. Gd-doped Li[Formula: see text]Al[Formula: see text]Gd[Formula: see text]Ti[Formula: see text](PO[Formula: see text] ([Formula: see text]= 0, 0.025, 0.05, 0.075 and 0.1) with high ionic conductivity was successfully synthesized by solvothermal method for the first time in this work. The effect of Gd doping content on the structure and electrochemical performance of solid electrolytes was systematically studied. The optimal doping content of Gd is [Formula: see text]= 0.075. With the Gd doping content of 0.075, the solid electrolyte has the highest ionic conductivity of 4.23 × 10[Formula: see text] S cm[Formula: see text] at room temperature, the lowest activation energy of 0.247 eV and the highest relative density of 94.89%. This is because the fact that when [Formula: see text]= 0.075, it is the maximum content of Gd[Formula: see text] to replace Al[Formula: see text] and can completely enter the lattice of LATP, and does not emerge too much non-lithium ion conductive GdPO4 phase.

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Effect of Various Lithium Salts in TEGDME Based Electrolyte for Li/Pyrite Battery

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.124-126.971 ◽

2007 ◽

Vol 124-126 ◽

pp. 971-974 ◽

Cited By ~ 4

Author(s):

Jae Won Choi ◽

Gouri Cheruvally ◽

Yong Jo Shin ◽

Hyo Jun Ahn ◽

Ki Won Kim ◽

...

Keyword(s):

Ionic Conductivity ◽

Ethylene Glycol ◽

Dimethyl Ether ◽

Room Temperature ◽

The Other ◽

Cycle Performance ◽

Lithium Salts ◽

Interfacial Resistance ◽

Ethylene Glycol Dimethyl Ether ◽

Discharge Capacities

The effect of lithium salts such as LiPF6, LiBF4, LiCF3SO3 and LiN(CF3SO2)2 (LiTFSI) in tetra(ethylene glycol) dimethyl ether (TEGDME) electrolyte on the ionic conductivity, interfacial resistance and discharge properties of Li/pyrite cell at room temperature was studied. The electrolytes had good ionic conductivity at room temperature in the range 0.61 to 1.86 × 10-3 S/. The discharge capacities of Li/pyrite cells with 1M LiPF6 and LiBF4 in TEGDME were lower compared to those of the other two non-HF containing salts. The best cycle performance was exhibited by LiTFSI in TEGDME electrolyte, with a discharge capacity of 438 mAhg-1 after 20 cycles, which is ~49% of FeS2 theoretical capacity (894 mAhg-1). The good performance of LiTFSI-TEGDME electrolyte resulted mainly from its low interfacial resistance in Li/FeS2 cells, which showed a decreasing trend with cycling.

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Montmorillonite (MONT) Complex and their Application

MRS Proceedings ◽

10.1557/proc-210-493 ◽

1990 ◽

Vol 210 ◽

Author(s):

Yu Wenhai ◽

Liu Wanyu

Keyword(s):

Solid State ◽

Ionic Conductivity ◽

Solid Electrolyte ◽

Room Temperature ◽

Ionic Conduction ◽

Electric Properties ◽

High Ionic Conductivity ◽

Polymer Complex ◽

Solid State Battery ◽

New Type

AbstractMontmorillonite(Mont) has been proved to be a kind of very promising solid electrolyte in recent years because of its good electric properties. It can be composed by polymer to prepare a mont-polymer complex which has high ionic conductivity and excellent plasticity. The film made of mont-polymer complex with room temperature ionic conduction has been used in solid state battery as solid electrolyte. It may be a new type of function material with futher application.

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