High rate capabilities of all-solid-state lithium secondary batteries using Li4Ti5O12-coated LiNi0.8Co0.15Al0.05O2 and a sulfide-based solid electrolyte

Seino, Yoshikatsu; Ota, Tsuyoshi; Takada, Kazunori

doi:10.1016/j.jpowsour.2011.03.090

Cited by 150 publications

(88 citation statements)

References 14 publications

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“…21,79,89 Such cathodes can be integrated with the SSE in a number of ways including mechanical bonding. A number of research efforts have reported this type of architecture; [151][152][153][154][155][156][157]159,[176][177][178][179] most notably, the development of Li 9.54 Si 1.74 P 1.33 S 11.7 Cl 0.3 for high temperature (100…”

Section: Development Of Full Cellsmentioning

confidence: 99%

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

Kerman

Luntz

Viswanathan

et al. 2017

J. Electrochem. Soc.

601

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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Section: Development Of Full Cellsmentioning

confidence: 99%

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

Kerman

Luntz

Viswanathan

et al. 2017

J. Electrochem. Soc.

601

471

View full text Add to dashboard Cite

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“…[84] This approach has been quite successful in obtaining homogeneous coatings of both Li 4 Ti 5 O 12 [81] and LiNbO 3 [70] on the surface of LiNi 1−x−y Co x Mn y O 2 , LiNi 0.80 Co 0.15 Al 0.05 O 2 , LiMn 2 O 4 , and LiCoO 2 cathode materials (i.e., many different compositions and morphologies) with various thicknesses and has become a rather standard coating procedure within the literature over the last decade. Achieving oxide coatings on CAMs for SSB applications using spray coating techniques was initially pioneered by Ohta et al in 2006, using a commercial multiplex coater that enables the fluidization of the cathode powder during the application of the coating precursor solution.…”

Section: Spray Coatingmentioning

confidence: 99%

On the Functionality of Coatings for Cathode Active Materials in Thiophosphate‐Based All‐Solid‐State Batteries

Culver

Koerver

Zeier

et al. 2019

Advanced Energy Materials

266

309

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achievable by SSBs. Meanwhile, polymer-, oxide-, and sulfide-based ionic conductors are being heavily investigated as the solid electrolyte (SE) separator. [9][10][11][12][13][14][15] Nevertheless, recent estimates [16,17] show that only batteries possessing sulfide-based SEs will be leading contenders for room-temperature applications.The sulfides, which are better denoted as thiophosphates, provide the highest lithium-ion conductivity, a relatively low E modulus, and can be processed at low temperatures. [2,3,18] Currently, only thiophosphates allow for the preparation of thick cathode composites with sufficient rate capability. [19,20] Unfortunately, thiophosphates also have a rather narrow electrochemical stability window, i.e., the onset of oxidative decomposition begins even before 3 V versus Li + /Li due to S(0)/S(−2) redox reactions, while reductive decomposition is theoretically expected at potentials of about 1.7 V versus Li + /Li due to P(+5)/P(−3) redox reactions. [21,22] Importantly, the perfect SE does not actually exist. The perfect SE would combine the ionic transport properties of thiophosphates, the mechanical properties of polymers, and the oxidation stability of oxides. Therefore, in order to exploit the superionic transport properties of thiophosphates, the implementation of protective coatings to overcome the intrinsic electrochemical instabilities is most certainly a necessity. The thermodynamic prerequisites for coatings (Figure 1) have already been treated in a number of theoretical papers, [18,21,[23][24][25] which provide the initial design guidelines.Beyond the thermodynamic considerations, it is well known that within SSBs, thiophosphate SEs are oxidized and decomposed in direct contact with cathode active materials (CAMs), in particular at high potentials during charging. [2,[26][27][28] Several years ago, Takada summarized the early work on SSBs and described the need for coatings against the formation of space charge layers at the interface between high-voltage cathodes and thiophosphate SEs. [29] Haruyama et al. concluded from density functional theory calculations that space charge layers between LiCoO 2 (LCO) and thiophosphate-based SEs are responsible for high impedances and that the addition of a buffer layer reduces such effects. [30] However, experimental evidence for such claims has not yet been reported. While these considerations are certainly valuable, from a current perspective, effects arising from the space charge layer are likely overstated and the role of oxidative degradation of the SE is understated. [31] Though the The last decade has seen considerable advancements in the development of solid electrolytes for solid-state battery applications, with particular attention being paid to sulfide superionic conductors. Importantly, the intrinsic electrochemical instability of these high-performance separators highlights the notion that further progress in the field of solid-state batteries is contingent on the optimization of component material interfaces in order to se...

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“…[42][43][44][45][46][47][48][49] Concerning the difference in chemical potential between the sulphide and the oxide, the SCL may forms at the twophase boundary according to requirement of thermodynamic equilibrium. Further concerning that the oxide is more absorptive with Li than the sulphide, the Li ion may transfer from the sulphide to the oxide, as schematically shown in Figure 3a.…”

Section: Space Charge Layer Effects In All Solid State Lithium Batteriesmentioning

confidence: 99%

Space Charge Layer Effect in Solid State Ion Conductors and Lithium Batteries: Principle and Perspective

Chen

Guo

2016

ACSi

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This paper is dedicated to Prof. Dr. Janko Jamnik, who was my enthusiastic and helpful MPI colleague as well as with high academic level and reputation in science community. AbstractThe space charge layer (SCL) effects were initially developed to explain the anomalous conductivity enhancement in composite ionic conductors. They were further extended to qualitatively as well as quantitatively understand the interfacial phenomena in many other ionic-conducting systems. Especially in nanometre-scale systems, the SCL effects could be used to manipulate the conductivity and construct artificial conductors. Recently, existence of such effects either at the electrolyte/cathode interface or at the interfaces inside the composite electrode in all solid state lithium batteries (ASSLB) has attracted attention. Therefore, in this article, the principle of SCL on basis of defect chemistry is first presented. The SCL effects on the carrier transport and storage in typical conducting systems are reviewed. For ASSLB, the relevant effects reported so far are also reviewed. Finally, the perspective of interface engineer related to SCL in ASSLB is addressed.

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High rate capabilities of all-solid-state lithium secondary batteries using Li4Ti5O12-coated LiNi0.8Co0.15Al0.05O2 and a sulfide-based solid electrolyte

Cited by 150 publications

References 14 publications

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

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

On the Functionality of Coatings for Cathode Active Materials in Thiophosphate‐Based All‐Solid‐State Batteries

Space Charge Layer Effect in Solid State Ion Conductors and Lithium Batteries: Principle and Perspective

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