Electrochemical performance of an all-solid-state lithium ion battery with garnet-type oxide electrolyte

Ohta, Shingo; Kobayashi, Tetsuro; Seki, Juntaro; Asaoka, Takahiko

doi:10.1016/j.jpowsour.2011.10.064

Cited by 331 publications

(229 citation statements)

References 16 publications

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“…11 The wide electrochemical window allows the use of high voltage cathode materials which may result in a potential high specific capacity for ASLBs.…”

Section: 10mentioning

confidence: 99%

High Capacity All-Solid-State Lithium Battery Using Cathodes with Three-Dimensional Li⁺Conductive Network

Zhang

Chen

Yang

et al. 2017

J. Electrochem. Soc.

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All-solid-state lithium batteries (ASLBs) have been dramatically attracted recently for its ability of solving the safety issues in traditional lithium ion batteries using liquid electrolyte. However the poor Li + transportation between the active material particles in the cathode greatly deteriorate the specific capacity of ASLBs. Herein, we design a composite cathode composed of polyethylene oxide (PEO) and LiCoO 2 (LCO) in which a three-dimensional (3D) continuous Li + conductive network forms. With the decrease of the LCO: PEO ratio, the 3D Li + conductive network gradually becomes continuous, and the corresponding discharge capacity increase from 50 to 136 mAh g −1 . At LCO: PEO = 6:1 and 4:1, the corresponding ASLBs has a very high discharge capacity of 136 and 124 mAh g −1 , respectively, representing approximately 98% and 90% of the theoretical discharge capacity. The capacity retention after 5 cycles is 97%∼98% of the 2 nd cycle, which confirms stable cycle performance of the battery. The FTIR results show that, in the composite cathode, the LCO particles transport Li + cations by coordinating CO functional group in PEO chains. Compared with other optimized ASLBs based on LLZO solid elctrolyte, our battery has higher specific capacity while being tested under the highest current rate. Recently, the all-solid-state lithium batteries (ASLBs) based on solid electrolyte are receiving significant attention for its safety by the displacement of the volatile and flammable liquid electrolyte.1-4 To develop high performance ASLBs, three critical issues must be considered: (1) get a high lithium ionic conductivity solid electrolyte of 10 −2 ∼10 −3 S cm −1 at room temperature and stability against chemical reaction with lithium anode, (2) lower the interfacial resistance between the electrodes and solid electrolyte, (3) solve the problem of poor Li ionic transportation among active material particles in the cathode. However, the third issue is often overlooked.The garnet-type inorganic oxide lithium ion conductor, nominal Li 7 La 3 Zr 2 O 12 (LLZO), is highly expected to be used as the solid electrolyte to accelerate the development of ASLBs.5-8 Recent reports reveal that doping with elements such as Ga 3+ and Ta 5+ can improve its room temperature conductivity to 0.4∼1.0 × 10 −3 S cm −1 . 9,10The LLZO system is reported to be stable with Li metal anode as well as possessing high electrochemical window (vs Li > 5 v). 11 The wide electrochemical window allows the use of high voltage cathode materials which may result in a potential high specific capacity for ASLBs.So far, the interfacial resistance between the electrodes and solid electrolyte has become the main contributor to the internal resistance of ASLBs, especially the resistance between cathode and solid electrolyte. Electrochemical performance of ASLBs based on LLZO solid electrolyte has been constructed by some groups using various methods aimed at reducing the interfacial resistance.12-15 Tan et al.12 reported a proto-type Li/LLZO/LiCoO 2 (LCO) cell whic...

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“…11 The wide electrochemical window allows the use of high voltage cathode materials which may result in a potential high specific capacity for ASLBs.…”

Section: 10mentioning

confidence: 99%

High Capacity All-Solid-State Lithium Battery Using Cathodes with Three-Dimensional Li⁺Conductive Network

Zhang

Chen

Yang

et al. 2017

J. Electrochem. Soc.

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“…16 However the Li 7 lower sintering temperature around 950 • C. 16 The synthesis, structural and electrical conductivity of Ta, Nb, Al, Ga, Si, Y substituted cubic phase LLZ have also been reported. [17][18][19][20][21][22][23][24][25][26] Although there are several reports on synthesis, structure and ionic conductivity a detailed investigation on understanding the Li + dynamics through impedance spectroscopy is scarce. For further understanding of the Li + dynamics in lithium garnets and the effect of tungsten (W) substitution on Li + transport properties of LLZ a detailed impedance spectroscopic investigation has been carried out in the present work on Li 7 3 (Sigma -Aldrich, 99 %).…”

Section: Introductionmentioning

confidence: 99%

Li+ transport properties of W substituted Li7La3Zr2O12 cubic lithium garnets

Dhivya

Janani²,

Palanivel³

et al. 2013

AIP Advances

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Lithium garnet Li7La3Zr2O12 (LLZ) sintered at 1230 °C has received considerable importance in recent times as result of its high total (bulk + grain boundary) ionic conductivity of 5 × 10−4 S cm−1 at room temperature. In this work we report Li+ transport process of Li7−2xLa3Zr2−xWxO12 (x = 0.3, 0.5) cubic lithium garnets. Among the investigated compounds, Li6.4La3Zr1.7W0.3O12 sintered relatively at lower temperature 1100 °C exhibits highest room temperature (30 °C) total (bulk + grain boundary) ionic conductivity of 7.89 × 10−4 S cm−1. The temperature dependencies of the bulk conductivity and relaxation frequency in the bulk are governed by the same activation energy. Scaling the conductivity spectra for both Li6.4La3Zr1.7W0.3O12 and Li6La3Zr1.5W0.5O12 sample at different temperatures merges on a single curve, which implies that the relaxation dynamics of charge carriers is independent of temperature. The shape of the imaginary part of the modulus spectra suggests that the relaxation processes are non-Debye in nature. The present studies supports the prediction of optimum Li+ concentration required for the highest room temperature Li+ conductivity in LixLa3M2O12 is around x = 6.4 ± 0.1

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“…75,181,182 At room temperature, nearly negligible interfacial impedances and 1 cm 2 have been shown for LPS|Li and LLZO|Li using best practices. 5,183 Oxide systems have been shown in true solid state architecture by either growing a thin cathode atop LLZO, 184,185 or using a low melting point conducting agent such as Li 3 BO 3 in the cathode. 186 A bulk co-sintering approach to create a bonded cathode-SSE interface introduces significant material compatibility issues during high temperature processing.…”

mentioning

confidence: 99%

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

Kerman

Luntz

Viswanathan

et al. 2017

J. Electrochem. Soc.

589

471

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Solid state electrolyte systems boasting Li + conductivity of >10 mS cm −1 at room temperature have opened the potential for developing a solid state battery with power and energy densities that are competitive with conventional liquid electrolyte systems. The primary focus of this review is twofold. First, differences in Li penetration resistance in solid state systems are discussed, and kinetic limitations of the solid state interface are highlighted. Second, technological challenges associated with processing such systems in relevant form factors are elucidated, and architectures needed for cell level devices in the context of product development are reviewed. Specific research vectors that provide high value to advancing solid state batteries are outlined and discussed. Solid state battery systems are of great interest because of potential benefits in gravimetric and volumetric energy density, operable temperature range, and safety in comparison to traditional liquid electrolyte based systems. However, unresolved fundamental issues remain in the quest to fully understand the behavior of all-solid batteries, especially in the area of electrochemical interfaces.1 There are also a number of significant engineering challenges that require methodical effort to enable a tangible product. Some transitions from academic laboratories to entrepreneurial efforts attempting to overcome these challenges remain unsuccessful in efforts to bring a product to the market.2,3 Vital parameters that require robust understanding from a product development standpoint are material cost, cell lifetime and shelf life, cell energy density on a volumetric and gravimetric basis, operable capabilities for given temperature conditions, and safety. The advantage of energy density remains to be realized in solid state electrolytes (SSEs) since most studies to date utilize thick SSEs or cathodes with low active loading compared to liquid counterparts. 4,5 Furthermore, the desire to use SSEs in conjunction with Li metal anodes requires understanding and managing the morphology of Li metal plating, which can impact volumetric energy density. Operation at both higher and lower temperature compared to conventional technologies is a significant potential advantage of SSE systems. However, reports of solid state cells achieving parity with traditional systems at room temperature or any other temperature do not currently exist. The safety, specifically decreased flammability, of SSE systems is another potential advantage but requires ongoing validation and study.6 Unlike current liquid electrolyte systems, 7 the manufacturability and material component costs of SSEs have not been well characterized, and thus the value of these features will need to be weighed accordingly with any added cost. Operating lifetime of SSEs capturing intrinsic materials parameters such as voltage stability, 8 as well as catastrophic failure modes such as shorting, 9 have been briefly investigated, but in the absence of high energy density electrode formulations and appli...

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Electrochemical performance of an all-solid-state lithium ion battery with garnet-type oxide electrolyte

Cited by 331 publications

References 16 publications

High Capacity All-Solid-State Lithium Battery Using Cathodes with Three-Dimensional Li⁺Conductive Network

High Capacity All-Solid-State Lithium Battery Using Cathodes with Three-Dimensional Li⁺Conductive Network

Li+ transport properties of W substituted Li7La3Zr2O12 cubic lithium garnets

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

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Electrochemical performance of an all-solid-state lithium ion battery with garnet-type oxide electrolyte

Cited by 331 publications

References 16 publications

High Capacity All-Solid-State Lithium Battery Using Cathodes with Three-Dimensional Li+Conductive Network

High Capacity All-Solid-State Lithium Battery Using Cathodes with Three-Dimensional Li+Conductive Network

Li+ transport properties of W substituted Li7La3Zr2O12 cubic lithium garnets

Review—Practical Challenges Hindering the Development of Solid State Li Ion Batteries

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Product

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High Capacity All-Solid-State Lithium Battery Using Cathodes with Three-Dimensional Li⁺Conductive Network

High Capacity All-Solid-State Lithium Battery Using Cathodes with Three-Dimensional Li⁺Conductive Network