The influence of void space on ion transport in a composite cathode for all-solid-state batteries

Hlushkou, Dzmitry; Reising, Arved E.; Kaiser, Nico; Spannenberger, Stefan; Schlabach, Sabine; Kato, Yoshifumi; Roling, Bernhard; Tallarek, Ulrich

doi:10.1016/j.jpowsour.2018.06.041

Cited by 85 publications

(85 citation statements)

References 40 publications

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“…Furthermore, strategies to reduce the remaining porosity, e. g . by the design of particle sizes, tailored densification protocols and filling with liquid/polymer electrolytes, can be expected to decrease the MacMullin number and tortuosity of all‐solid‐state electrodes effectively [71,130] …”

Section: Discussionmentioning

confidence: 99%

“…elucidated the performance of thick electrode configurations in graphite‐LiCoO 2 solid‐state cells, reporting the tortuous ion transport within the cathode to be limiting at a high areal capacity of about 15.7 mAh ⋅ cm −2 [67] . For oxide cathode active materials, the influence of the microstructure on cell performance has been discussed in depth [68–75] . The analysis of the effective transport properties of battery separators and electrodes clearly led to a deeper understanding of the underlying bottlenecks.…”

Section: Introductionmentioning

confidence: 99%

“…While X‐ray diffraction and X‐ray photoelectron spectroscopy are widely used techniques to characterize aging and degradation of sulfur‐based cathodes, [43,87–89] any microstructural information is limited. For this reason, the electrochemical assessment of effective transport properties represents an essential tool to elucidate the ionic and electronic transport within solid‐state cathode composites [67,71,90,91] …”

Section: Introductionmentioning

confidence: 99%

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Analysis of Charge Carrier Transport Toward Optimized Cathode Composites for All‐Solid‐State Li−S Batteries

Dewald

Ohno

Hering

et al. 2020

Batteries & Supercaps

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A high theoretical energy density makes lithium‐sulfur (Li−S) batteries promising candidates for energy storage systems of the post‐lithium‐ion generation. As the performance of Li−S cells with liquid electrolytes is impaired by the solubility of reaction intermediates, solid‐state cell concepts represent an auspicious approach for future electrochemical energy storage. However, the kinetics of Li−S solid‐state batteries and high charge/discharge rate still remain major challenges, and in‐depth knowledge of the charge carrier transport in solid‐state composite sulfur cathodes is still missing. In this work, the charge transport and cyclability of composite cathodes consisting of sulfur, Li6PS5Cl and carbon, with varying volume fractions of ion‐ and electron‐conducting phases is investigated. The limiting thresholds of charge transport are elucidated by comparing the battery performance with effective transport properties of the cathode composite. Although both the effective electronic and ionic conductivities indicate high tortuosity factors, ionic transport is identified as a critical bottleneck. This work underscores the importance of quantitative transport analysis as a tool for cathode optimization.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Charge Carrier Transport Toward Optimized Cathode Composites for All‐Solid‐State Li−S Batteries

Dewald

Ohno

Hering

et al. 2020

Batteries & Supercaps

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“…In particular, the materials developed for sulfide‐ASSLBs, such as high conductivity electrolytes, surface stabilized active materials, and high energy density cathodes, which yielded noticeable improvements, have been very impressive . However, several significant challenges, in terms of electrode design, electrolyte chemical stability to air, and fabrication process, have hindered the practical application of ASSLBs . Therefore, in order to understand the current status of ASSLB development and determine the future research direction, it is highly necessary to compare the present sulfide‐ASSLBs with the conventional LIB technologies.…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10] However, several significant challenges, in terms of electrode design, electrolyte chemical stability to air, and fabrication process, have hindered the practical application of ASSLBs. [11][12][13][14][15] Therefore, in order to understand the current status of ASSLB development and determine the future research direction, it is highly necessary to compare the present sulfide-ASSLBs with the conventional LIB technologies.…”

mentioning

confidence: 99%

Advances and Prospects of Sulfide All‐Solid‐State Lithium Batteries via One‐to‐One Comparison with Conventional Liquid Lithium Ion Batteries

et al. 2019

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Owing to the safety issue of lithium ion batteries (LIBs) under the harsh operating conditions of electric vehicles and mobile devices, all‐solid‐state lithium batteries (ASSLBs) that utilize inorganic solid electrolytes are regarded as a secure next‐generation battery system. Significant efforts are devoted to developing each component of ASSLBs, such as the solid electrolyte and the active materials, which have led to considerable improvements in their electrochemical properties. Among the various solid electrolytes such as sulfide, polymer, and oxide, the sulfide solid electrolyte is considered as the most promising candidate for commercialization because of its high lithium ion conductivity and mechanical properties. However, the disparity in energy and power density between the current sulfide ASSLBs and conventional LIBs is still wide, owing to a lack of understanding of the battery electrode system. Representative developments of ASSLBs in terms of the sulfide solid electrolyte, active materials, and electrode engineering are presented with emphasis on the current status of their electrochemical performances, compared to those of LIBs. As a rational method to realizing high energy sulfide ASSLBs, the requirements for the sulfide solid electrolytes and active materials are provided along through simple experimental demonstrations. Potential future research directions in the development of commercially viable sulfide ASSLBs are suggested.

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Electro–Chemo–Mechanical Issues at the Interfaces in Solid‐State Lithium Metal Batteries

Wang

Song

et al. 2019

Adv Funct Materials

143

105

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Effective solid‐state interfacial contact of both the cathode and lithium metal anode with the solid electrolyte (SE) are required to improve the performance of solid‐state lithium metal batteries (SSBs). Electro–chemo–mechanical coupling (ECMC) strongly affects the interfacial stability of SSBs. On one hand, mechanical stress strongly influences interfacial contact and causes side reactions. On the other hand, electrochemical reactions such as lithium deposition cause mechanical deformation and stress at electrode/SE interfaces. To solve the degradation/failure problems of interfaces and provide guidelines to construct high‐performance SSBs, the ECMC at electrode/SE interfaces should be comprehensively investigated. In this review, the problems associated with ECMC at electrode/SE interfaces are summarized. The interfacial degradation/failure mechanisms, including the contact and electrochemical stability of interfaces, are introduced. Mechanical factors affecting interfacial contact and lithium deposition are highlighted. Experimental observation and computational analysis methods for electrode/SE interfaces are then summarized. Strategies to construct stable electrode/SE interfaces, such as assembling stress and wetting layers to improve interfacial contact, 3D SE structure, and plating stress relief to suppress lithium dendrite formation, are reviewed. The remaining challenges to better understanding ECMC and related solutions to aid SSB development are discussed.

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The influence of void space on ion transport in a composite cathode for all-solid-state batteries

Cited by 85 publications

References 40 publications

Analysis of Charge Carrier Transport Toward Optimized Cathode Composites for All‐Solid‐State Li−S Batteries

Analysis of Charge Carrier Transport Toward Optimized Cathode Composites for All‐Solid‐State Li−S Batteries

Advances and Prospects of Sulfide All‐Solid‐State Lithium Batteries via One‐to‐One Comparison with Conventional Liquid Lithium Ion Batteries

Electro–Chemo–Mechanical Issues at the Interfaces in Solid‐State Lithium Metal Batteries

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