Addressing voltage hysteresis in Li-rich cathode materials <i>via</i> gas–solid interface modification

Zhao, Qing; Zhang, Mengke; Ye, Zhengcheng; Li, Yao; Qiu, Lang; Zheng, Zhuo; Liu, Yang; Zhong, Benhe; Song, Yang; Guo, Xiaodong

doi:10.1039/d2nr05936c

Cited by 9 publications

(3 citation statements)

References 57 publications

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“…The changes of compressive stress in differently disproportionated SiO samples observed by Raman spectroscopy could have an influence on their electrochemical behaviors. Since the lithiation process of Si-based anode materials is accompanied by intrinsic volume expansion while forming the Li x Si alloy, the greater compressive stress could make it difficult for the Li ion to enter the SiO anode and hinder its expansion, which would reduce the reversible capacity. − …”

Section: Resultsmentioning

confidence: 99%

Understanding the Relationship Between Stress Change and Electrochemical Performance of a Heated SiO Anode Through In Situ Raman Spectrum

Li,

Wang

et al. 2023

J. Phys. Chem. C

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Silicon monoxide (SiO) has drawn researchers' attention and been widely studied due to its high capacity and excellent cyclability. Compared with pure Si anode, SiO anode exhibits lower specific capacity but better cycling stability due to its unique microstructure formed by Si and O atoms. The disproportionation reaction of SiO can be caused by heating, which can change the distribution of Si and O atoms and is commonly used as pretreatment. The electrochemical properties of SiO with different disproportionation degrees vary a lot. However, the mechanism how disproportionation affects the electrochemical properties of SiO still remains unclear. Also, crystallization takes place during heat treatment at the same time. In this study, different disproportionated SiO materials were obtained by heating raw SiO at various temperatures. The stress change caused by crystallization could hinder the lithiation process of SiO particles, and it was measured by in situ and ex situ Raman spectroscopy to propose a new perspective to illustrate the impact of disproportionation on electrochemical properties. A crystallization phenomenon of Si domains in SiO materials caused by short-wavelength laser was firstly found through ex situ Raman spectroscopy tests.

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Section: Resultsmentioning

confidence: 99%

Understanding the Relationship Between Stress Change and Electrochemical Performance of a Heated SiO Anode Through In Situ Raman Spectrum

Li,

Wang

et al. 2023

J. Phys. Chem. C

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“…10 Thus, a modest and reasonable cathode material for SIBs, which is considered to be harmless to the ecosystem, can indeed address the aforementioned issues, which is a key task for society's practical development and use of the resulting battery systems. 11 Over the past few years, a huge number of new cathode materials have been introduced. These include nanostructured materials, which have more limited particle dispersion distances, a huge surface area, and better stress relief.…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, a lot of examination has been committed to the examination of promising cathode materials for SIBs . Thus, a modest and reasonable cathode material for SIBs, which is considered to be harmless to the ecosystem, can indeed address the aforementioned issues, which is a key task for society’s practical development and use of the resulting battery systems . Over the past few years, a huge number of new cathode materials have been introduced.…”

Section: Introductionmentioning

confidence: 99%

Low-Cost, the Key for the Commercialization of the Na₃V₂(PO₄)₃ Cathode

Xiong,

Li,

et al. 2024

Ind. Eng. Chem. Res.

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During recent years, emerging electrochemical energy storage systems beyond lithium-ion batteries have attracted extensive interest, in which large amounts of studies have focused on the investigation of various electrode materials and where vanadium-based materials have received great attention particularly. In this review, in order to systematically understand the upstream and downstream relationships of vanadium, an overview of the recent research on vanadium resources and extraction is presented. Vanadium extraction techniques are classified into three main groups: direct roasting, sodium salt roasting, and calcification roasting. The existing phase of vanadium slag and its change during roasting are summarized. Since vanadium-based polyanionic compounds have remarkable characteristics for sodium-ion batteries, the structure, electrochemical properties, and modification strategies of Na 3 V 2 (PO 4 ) 3 are focused on. Finally, perspectives about future directions of vanadium-based materials for sodium-ion batteries are proposed, inspiring further research interest in composition design. We believe that this review will serve as a motivation for further development of vanadium resources and expose their potential applications in energy storage.

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From Liquid to Solid‐State Batteries: Li‐Rich Mn‐Based Layered Oxides as Emerging Cathodes with High Energy Density

Kong,

Zhao,

Sun

et al. 2023

Advanced Materials

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Li‐rich Mn‐based (LRMO) cathode materials have attracted widespread attention due to their high specific capacity, energy density, and cost‐effectiveness. However, challenges such as poor cycling stability, voltage deca,y and oxygen escape limit their commercial application in liquid Li‐ion batteries. Consequently, there is a growing interest in the development of safe and resilient all‐solid‐state batteries (ASSBs), driven by their remarkable safety features and superior energy density. ASSBs based on LRMO cathodes offer distinct advantages over conventional liquid Li‐ion batteries, including long‐term cycle stability, thermal and wider electrochemical windows stability, as well as the prevention of transition metal dissolution. This review aims to recapitulate the challenges and fundamental understanding associated with the application of LRMO cathodes in ASSBs. Additionally, it proposes the mechanisms of interfacial mechanical and chemical instability, introduces noteworthy strategies to enhance oxygen redox reversibility, enhances high‐voltage interfacial stability, and optimizes Li+ transfer kinetics. Furthermore, it suggests potential research approaches to facilitate the large‐scale implementation of LRMO cathodes in ASSBs.

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Addressing voltage hysteresis in Li-rich cathode materials via gas–solid interface modification

Abstract: Li-rich layered materials have attracted a host of attention for their large capacity (> 250 mA h g-1) stemming from anion redox at high voltage. However, the inherent problems, such...

Cited by 9 publications

References 57 publications

Understanding the Relationship Between Stress Change and Electrochemical Performance of a Heated SiO Anode Through In Situ Raman Spectrum

Understanding the Relationship Between Stress Change and Electrochemical Performance of a Heated SiO Anode Through In Situ Raman Spectrum

Low-Cost, the Key for the Commercialization of the Na₃V₂(PO₄)₃ Cathode

From Liquid to Solid‐State Batteries: Li‐Rich Mn‐Based Layered Oxides as Emerging Cathodes with High Energy Density

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Addressing voltage hysteresis in Li-rich cathode materials via gas–solid interface modification

Abstract: Li-rich layered materials have attracted a host of attention for their large capacity (> 250 mA h g-1) stemming from anion redox at high voltage. However, the inherent problems, such...

Cited by 9 publications

References 57 publications

Understanding the Relationship Between Stress Change and Electrochemical Performance of a Heated SiO Anode Through In Situ Raman Spectrum

Understanding the Relationship Between Stress Change and Electrochemical Performance of a Heated SiO Anode Through In Situ Raman Spectrum

Low-Cost, the Key for the Commercialization of the Na3V2(PO4)3 Cathode

From Liquid to Solid‐State Batteries: Li‐Rich Mn‐Based Layered Oxides as Emerging Cathodes with High Energy Density

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Product

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Low-Cost, the Key for the Commercialization of the Na₃V₂(PO₄)₃ Cathode