Understanding materials challenges for rechargeable ion batteries with in situ transmission electron microscopy

Yuan, Yifei; Amine, Khalil; Lü, Jun; Shahbazian‐Yassar, Reza

doi:10.1038/ncomms15806

Cited by 345 publications

(236 citation statements)

References 118 publications

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“…[1] Alloy materials MM' (M = Li, Na, K; M' = Sn, Si, Sb, Ge, P, etc.) [6][7][8][9] The repeated expansion/contraction results in the pulverization of the alloy materials, leading to the loss of electrical contact between the alloy particles and the current collector and further severe capacity degradation. [2][3][4][5] The primary challenge to implement these alloy anodes in commercial batteries is their large volume change during the discharge-charge processes.…”

Section: Introductionmentioning

confidence: 99%

Boosting Superior Lithium Storage Performance of Alloy‐Based Anode Materials via Ultraconformal Sb Coating–Derived Favorable Solid‐Electrolyte Interphase

Xiong

Zhou

et al. 2019

Advanced Energy Materials

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Alloy materials such as Si and Ge are attractive as high‐capacity anodes for rechargeable batteries, but such anodes undergo severe capacity degradation during discharge–charge processes. Compared to the over‐emphasized efforts on the electrode structure design to mitigate the volume changes, understanding and engineering of the solid‐electrolyte interphase (SEI) are significantly lacking. This work demonstrates that modifying the surface of alloy‐based anode materials by building an ultraconformal layer of Sb can significantly enhance their structural and interfacial stability during cycling. Combined experimental and theoretical studies consistently reveal that the ultraconformal Sb layer is dynamically converted to Li3Sb during cycling, which can selectively adsorb and catalytically decompose electrolyte additives to form a robust, thin, and dense LiF‐dominated SEI, and simultaneously restrain the decomposition of electrolyte solvents. Hence, the Sb‐coated porous Ge electrode delivers much higher initial Coulombic efficiency of 85% and higher reversible capacity of 1046 mAh g−1 after 200 cycles at 500 mA g−1, compared to only 72% and 170 mAh g−1 for bare porous Ge. The present finding has indicated that tailoring surface structures of electrode materials is an appealing approach to construct a robust SEI and achieve long‐term cycling stability for alloy‐based anode materials.

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Section: Introductionmentioning

confidence: 99%

Boosting Superior Lithium Storage Performance of Alloy‐Based Anode Materials via Ultraconformal Sb Coating–Derived Favorable Solid‐Electrolyte Interphase

Xiong

Zhou

et al. 2019

Advanced Energy Materials

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“…In the past decades, various state‐of‐the‐art ex situ and in situ characterization techniques have been developed to obtain accurate information about interfacial evolution in batteries . It is generally accepted that atomic force microscopy (AFM) is a useful and powerful technique to characterize surfaces of electrodes by monitoring and analyzing the tip–surface interaction .…”

Section: Introductionmentioning

confidence: 99%

Advances in Understanding Materials for Rechargeable Lithium Batteries by Atomic Force Microscopy

Wang

Liu

Zhao

et al. 2018

Energy & Environ Materials

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The development of advanced lithium batteries represents a major technological challenge for the new century. Understanding the fundamental electrode degradation mechanisms is important for battery performance improvements. The complex electrochemical processes inside a working battery are being explored to a limited extent. Various advanced material characterization techniques have been used to monitor dynamic conditions for optimizing battery materials. State‐of‐the‐art atomic force microscopy methods have been applied to energy storage systems, specifically lithium‐ion batteries. Atomic force microscopy is an ideal tool to provide localized morphological, chemical, and physical information at nanoscale for the in‐depth understanding of the electrochemical processes, reaction mechanisms, and degradation of battery materials. Here, we review recent progress in the development and application of atomic force microscopy for high‐performance lithium‐ion batteries. We discuss atomic force microscopy as an analytical tool to help researchers understand graphite, silicon, layered metal oxides, and other representative electrode materials. We summarize the importance of atomic force microscopy technique in studying the next‐generation Li–S and Li–O2 batteries. We also highlight some of the remaining challenges and possible solutions for future development.

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“…The use of liquid‐cell transmission electron microscopy (LCTEM) has been reported providing the basis of atomically resolved observations in liquid, and with various applications including materials synthesis/processing/corrosion, mineralogy and geochemistry, batteries, polymers, catalytic reactions, and biology . It allows in situ microscopy in the liquid phase with both high spatial and temporal resolution .…”

Section: Methodsmentioning

confidence: 99%

A Universal Nano‐capillary Based Method of Catalyst Immobilization for Liquid‐Cell Transmission Electron Microscopy

et al. 2020

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A universal nano‐capillary based method for sample deposition on the silicon nitride membrane of liquid‐cell transmission electron microscopy (LCTEM) chips is demonstrated. It is applicable to all substances which can be dispersed in a solvent and are suitable for drop casting, including catalysts, biological samples, and polymers. Most importantly, this method overcomes limitations concerning sample immobilization due to the fragility of the ultra‐thin silicon nitride membrane required for electron transmission. Thus, a straightforward way is presented to widen the research area of LCTEM to encompass any sample which can be externally deposited beforehand. Using this method, NixB nanoparticles are deposited on the μm‐scale working electrode of the LCTEM chip and in situ observation of single catalyst particles during ethanol oxidation is for the first time successfully monitored by means of TEM movies.

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Understanding materials challenges for rechargeable ion batteries with in situ transmission electron microscopy

Cited by 345 publications

References 118 publications

Boosting Superior Lithium Storage Performance of Alloy‐Based Anode Materials via Ultraconformal Sb Coating–Derived Favorable Solid‐Electrolyte Interphase

Boosting Superior Lithium Storage Performance of Alloy‐Based Anode Materials via Ultraconformal Sb Coating–Derived Favorable Solid‐Electrolyte Interphase

Advances in Understanding Materials for Rechargeable Lithium Batteries by Atomic Force Microscopy

A Universal Nano‐capillary Based Method of Catalyst Immobilization for Liquid‐Cell Transmission Electron Microscopy

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