Coating materials and processes for cathodes in sulfide-based all solid-state batteries

Morchhale, Ayush; Tang, Zhenghuan; Yu, Chanyeop; Farahati, Rashid; Kim, Jung Hyun

doi:10.1016/j.coelec.2023.101251

Cited by 5 publications

(4 citation statements)

References 75 publications

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“…These reactions must be seen in the context of the low stability window of sulfide electrolytes, which makes these materials unstable towards both the anode and the cathode in the charged state [136]. Strategies to circumvent these instabilities include coating or interlayer approaches [137], which can increase the cycling stability. However, the interaction of a solid with a solution is a very different process, since dissolved ions, such as PS 4 3− , can approach the surface of an electrode material in a different way.…”

Section: Sulfide-based Ssbsmentioning

confidence: 99%

“…Currently, it fulfills the goal of stabilizing interfaces, e.g. between the active cathode material and the electrolyte material in order to increase the cycling stability of the system by avoiding reactions between them [137] (which is an important step towards long lifetime products, and definitely helps to minimize recovery frequency). However, one could also imagine a functional coating in such a way that it reduces additional chemical reactions between the different components, which would become relevant within a recycling process (e.g.…”

Section: Future Perspectivesmentioning

confidence: 99%

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Recycling of solid-state batteries—challenge and opportunity for a circular economy?

Jacob,

Wissel,

Clemens

2024

Mater. Futures

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The tremendous efforts made in the research field of solid-state Li-ion batteries has led to considerable advancement of this technology and first market-ready systems can be expected in the near future. The research community is currently investigating different solid-state electrolyte classes (e.g., oxides, sulfides, halides and polymers) with a focus on further optimizing the synthesis and electrochemical performance. However, so far, the development of sustainable recycling strategies allowing for an efficient backflow of critical elements contained in these batteries into the economic cycle and thus a transition from a linear to a circular economy lags behind.In this contribution, resource aspects with respect to the chemical value of crucial materials, which are used for the synthesis of solid-state electrolytes are being discussed. Furthermore, an overview of possible approaches in relation to their challenges and opportunities for the recycling of solid-state batteries with respect to different solid-state electrolyte classes by means of pyrometallurgy, hydrometallurgy and direct recycling/dissolution-based separation processes is given. Based these considerations and with reference to previous research, it will be shown that different solid-state electrolytes will require individually adapted recycling processes to be suitably designed for a circular economy, and that further improvements and investigations will be required.

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Section: Sulfide-based Ssbsmentioning

confidence: 99%

Section: Future Perspectivesmentioning

confidence: 99%

Recycling of solid-state batteries—challenge and opportunity for a circular economy?

Jacob,

Wissel,

Clemens

2024

Mater. Futures

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“…Composite cathode materials are designed by integrating various components to leverage their complementary properties. This approach combines the advantages of multiple materials to address the challenges associated with low conductivity and structural instability in SSB cathodes [46,47]. One notable example is the development of composite cathodes using conductive polymers.…”

Section: Composite Approachesmentioning

confidence: 99%

“…The structural optimization of SSB cathodes aims to mitigate two fundamental challenges: low electrical conductivity and structural instability. Various strategies, including those discussed above, are employed to address these issues [40][41][42][43][44][45][46][47]. For example, doping cathode materials with elements like niobium (Nb) or aluminum (Al) can enhance the electronic conductivity while maintaining structural integrity [38,40,44].…”

Section: Addressing Issues Like Low Conductivity and Structural Insta...mentioning

confidence: 99%

The Next Frontier in Energy Storage: A Game-Changing Guide to Advances in Solid-State Battery Cathodes

Machín,

Márquez

2023

Batteries

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As global energy priorities shift toward sustainable alternatives, the need for innovative energy storage solutions becomes increasingly crucial. In this landscape, solid-state batteries (SSBs) emerge as a leading contender, offering a significant upgrade over conventional lithium-ion batteries in terms of energy density, safety, and lifespan. This review provides a thorough exploration of SSBs, with a focus on both traditional and emerging cathode materials like lithium cobalt oxide (LiCoO2), lithium manganese oxide (LiMn2O4), lithium iron phosphate (LiFePO4), as well as novel sulfides and oxides. The compatibility of these materials with solid electrolytes and their respective benefits and limitations are extensively discussed. The review delves into the structural optimization of cathode materials, covering strategies such as nanostructuring, surface coatings, and composite formulations. These are critical in addressing issues like conductivity limitations and structural vulnerabilities. We also scrutinize the essential roles of electrical and thermal properties in maintaining battery safety and performance. To conclude, our analysis highlights the revolutionary role of SSBs in the future of energy storage. While substantial advancements have been made, the path forward presents numerous challenges and research opportunities. This review not only acknowledges these challenges, but also points out the need for scalable manufacturing approaches and a deeper understanding of electrode–electrolyte interactions. It aims to steer the scientific community toward addressing these challenges and advancing the field of SSBs, thereby contributing significantly to the development of environmentally friendly energy solutions.

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Progress and Challenges in Buffer Layers Between Cathode Materials and Sulfide Solid Electrolytes in All‐Solid‐State Batteries

Byeon,

Kim,

Han

et al. 2024

Adv Energy and Sustain Res

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All‐solid‐state batteries (ASSBs), configured with solid electrolytes, have received considerable attention as a future energy solution across diverse sectors of modern society. Unlike conventional liquid electrolytes in particular, sulfide solid electrolytes have various advantages, such as high ionic conductivity (>10−3 S cm−1), good ductile properties, and thermal stability. Despite these advantages, the practical application of sulfide solid electrolytes in ASSBs is still limited due to their interfacial instability with commercial cathode materials. Unfortunately, the spontaneous formation of a space charge layer (SCL) at the interface between the cathode material and the solid electrolyte leads to heightened interfacial resistance, obstructing Li+ transport. To address this issue, proper interfacial engineering is still required to facilitate smooth Li+ migration across the interfaces. In this respect, various functional materials have been under exploration as buffer layers, which are intended to suppress the formation of the SCL at these interfaces. Herein, focus is given on the critical significance of these buffer layers between cathode materials and sulfide solid electrolytes in the development of ASSBs. Considering the present limitations, future research directions for next‐generation ASSBs are discussed. These insights are poised to offer valuable guidance for the strategic design and development of highly reliable ASSBs.

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Coating materials and processes for cathodes in sulfide-based all solid-state batteries

Cited by 5 publications

References 75 publications

Recycling of solid-state batteries—challenge and opportunity for a circular economy?

Recycling of solid-state batteries—challenge and opportunity for a circular economy?

The Next Frontier in Energy Storage: A Game-Changing Guide to Advances in Solid-State Battery Cathodes

Progress and Challenges in Buffer Layers Between Cathode Materials and Sulfide Solid Electrolytes in All‐Solid‐State Batteries

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