Graphite–Silicon Diffusion‐Dependent Electrode with Short Effective Diffusion Length for High‐Performance All‐Solid‐State Batteries

Silicon (Si)‐based solid‐state batteries (Si‐SSBs) are attracting tremendous attention because of their high energy density and unprecedented safety, making them become promising candidates for next‐generation energy storage systems. Nevertheless, the commercialization of Si‐SSBs is significantly impeded by enormous challenges including large volume variation, severe interfacial problems, elusive fundamental mechanisms, and unsatisfied electrochemical performance. Besides, some unknown electrochemical processes in Si‐based anode, solid‐state electrolytes (SSEs), and Si‐based anode/SSE interfaces are still needed to be explored, while an in‐depth understanding of solid–solid interfacial chemistry is insufficient in Si‐SSBs. This review aims to summarize the current scientific and technological advances and insights into tackling challenges to promote the deployment of Si‐SSBs. First, the differences between various conventional liquid electrolyte‐dominated Si‐based lithium‐ion batteries (LIBs) with Si‐SSBs are discussed. Subsequently, the interfacial mechanical contact model, chemical reaction properties, and charge transfer kinetics (mechanical–chemical kinetics) between Si‐based anode and three different SSEs (inorganic (oxides) SSEs, organic–inorganic composite SSEs, and inorganic (sulfides) SSEs) are systemically reviewed, respectively. Moreover, the progress for promising inorganic (sulfides) SSE‐based Si‐SSBs on the aspects of electrode constitution, three‐dimensional structured electrodes, and external stack pressure is highlighted, respectively. Finally, future research directions and prospects in the development of Si‐SSBs are proposed.

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Section: Inorganic (Sulfides) Sse‐based Si‐ssbsmentioning

confidence: 99%

Building better solid‐state batteries with silicon‐based anodes

Sun

Yin

Chen

et al. 2023

Interdisciplinary Materials

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“…To solve the problems of electrolyte decomposition and low energy density while maintaining stability, studies have been conducted to improve the performance by modifying the cell configuration as well as carbon‐based‐material modification 39,59,70,71 . In addition, collaboration with Si anode has also been proposed to satisfy high diffusion rate which enhance the volumetric capacity by reducing diffusion length during charging/discharging 74 …”

Section: Anode Materials For Assbsmentioning

confidence: 99%

Advances of sulfide‐type solid‐state batteries with negative electrodes: Progress and perspectives

Jeong

Sim

et al. 2023

EcoMat

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All-solid-state battery (ASSB) technology is the focus of considerable interest owing to their safety and the fact that their high energy density meets the requirements of emerging battery applications, such as electric vehicles and energy storage systems (ESSs). In light of this, current research on high-energy ASSBs harnesses the benefits of solid-state battery systems by employing anode materials with high energy densities. Owing to the excellent physical safety of solid electrolytes, it is possible to build a battery with high energy density by using high-energy negative electrode materials and decreasing the amount of electrolyte in the battery system. Sulfide-based ASSBs with high ionic conductivity and low physical contact resistance is recently receiving considerable attention. This review provides a summary on various anode materials for ASSBs operating under electrochemically reducing conditions from the perspective of electrochemical and physical safety. The electrochemical and physical properties of sulfide electrolytes used for lithium (Li) metal and particle-type anode materials are presented, as well as strategies for mitigating interfacial failures in solid-state cells through interlayer and electrode design.

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“…The development of battery technology in the future needs to address safety issues associated with state-of-the-art LIBs. Much effort has been devoted to facilitating the application of all-solid-state lithium batteries (ASSLBs) in electric vehicles through replacing the conventional liquid electrolyte with a solid electrolyte (SE). − However, the interface contact between the electrode and solid-state electrolyte (SSE) is deemed to be the critical challenge for its practical application . X-ray imaging techniques can be used to link electrochemical performance research with the electrolyte microstructure, which is conducive to understanding operation mechanisms and prompting systematic searches for a more compatible electrolyte material.…”

Section: X-ray Imaging Studies On Batteriesmentioning

confidence: 99%

Leveraging Advanced X-ray Imaging for Sustainable Battery Design

Yu¹,

Shan

Zhong

et al. 2022

ACS Energy Lett.

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With the growing demand for sustainable battery technologies, state-of-the-art characterization techniques become more and more critical for optimizing battery materials and uncovering their operation mechanisms. In this Review, we mainly focus on X-ray imaging techniques and the associated applications in obtaining insights into the physicochemical properties and quantitative changes of battery materials. Given the high-energy nature of X-rays, operando/in situ imaging studies have emerged as a unique method to enable researchers to investigate a variety of battery chemistries during battery cycling. Such a cutting-edge characterization tool is expected to advance the understanding of electrochemically driven heterogeneous reactions, involving the structure, chemistry, and morphology, as well as the interface. Mechanistic explanations are comprehensively provided to understand the close relationship between battery failure and electro-chemo-mechanical degradation in the electrode. We expect that the use of large-scale X-ray facilities can lead to major developments in sustainable batteries and benefit the whole materials science community.

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Graphite–Silicon Diffusion‐Dependent Electrode with Short Effective Diffusion Length for High‐Performance All‐Solid‐State Batteries

Cited by 40 publications

References 70 publications

Building better solid‐state batteries with silicon‐based anodes

Building better solid‐state batteries with silicon‐based anodes

Advances of sulfide‐type solid‐state batteries with negative electrodes: Progress and perspectives

Leveraging Advanced X-ray Imaging for Sustainable Battery Design

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