In situ synchrotron wide-angle X-ray scattering study on rapid lithiation of graphite anode via direct contact method for Li-ion capacitors

Park, Hyunchul; Kim, Minho; Xu, Fan; Jung, Cheolsoo; Hong, Soon Man; Koo, Chong Min

doi:10.1016/j.jpowsour.2015.01.193

Cited by 41 publications

(39 citation statements)

References 33 publications

(9 reference statements)

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“…However, the measurement of cell voltage or impedance are only indirect methods, which means that the dissolution of Li metal and the formation of the corresponding lithiated active material cannot be monitored. For this reason, Park et al [83] applied in situ synchrotron wide-angle X-ray scattering in order to monitor the formation of the different lithiated graphite stages with time, during the pre-lithiation in direct contact with Li metal foil. They could demonstrate a rapid speed of pre-lithiation, leading to a fully lithiated negative electrode within less than 60 min.…”

Section: Pre-lithiation By Direct Contact To Lithium Metalmentioning

confidence: 99%

Pre-Lithiation Strategies for Rechargeable Energy Storage Technologies: Concepts, Promises and Challenges

et al. 2018

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Abstract:In order to meet the sophisticated demands for large-scale applications such as electro-mobility, next generation energy storage technologies require advanced electrode active materials with enhanced gravimetric and volumetric capacities to achieve increased gravimetric energy and volumetric energy densities. However, most of these materials suffer from high 1st cycle active lithium losses, e.g., caused by solid electrolyte interphase (SEI) formation, which in turn hinder their broad commercial use so far. In general, the loss of active lithium permanently decreases the available energy by the consumption of lithium from the positive electrode material. Pre-lithiation is considered as a highly appealing technique to compensate for active lithium losses and, therefore, to increase the practical energy density. Various pre-lithiation techniques have been evaluated so far, including electrochemical and chemical pre-lithiation, pre-lithiation with the help of additives or the pre-lithiation by direct contact to lithium metal. In this review article, we will give a comprehensive overview about the various concepts for pre lithiation and controversially discuss their advantages and challenges. Furthermore, we will critically discuss possible effects on the cell performance and stability and assess the techniques with regard to their possible commercial exploration.

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Section: Pre-lithiation By Direct Contact To Lithium Metalmentioning

confidence: 99%

Pre-Lithiation Strategies for Rechargeable Energy Storage Technologies: Concepts, Promises and Challenges

et al. 2018

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“…The experimental procedure to fabricate GIC was inspired by the work done by Kim et al [31] and Park et al [32]. Sodium ingot was flattened using a roller in order to use it as a foil.…”

Section: Fabrication Of Gicmentioning

confidence: 99%

Synthesis of Graphene Nanosheets through Spontaneous Sodiation Process

Thomas

Kavak

Hashemi

et al. 2018

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Abstract:Graphene is one of the emerging materials in the nanotechnology industry due to its potential applications in diverse areas. We report the fabrication of graphene nanosheets by spontaneous electrochemical reaction using solvated ion intercalation into graphite. The current literature focuses on the fabrication of graphene using lithium metal. Our procedure uses sodium metal, which results in a reduction of costs. Using various characterization techniques, we confirmed the fabrication of graphene nanosheets. We obtained an intensity ratio (I D /I G ) of 0.32 using Raman spectroscopy, interlayer spacing of 0.39 nm and our XPS results indicate that our fabricated compound is relatively oxidation free.

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“…In the past decades, various electrochemical energy storage and conversion devices have been extensively explored, such as fuel cells, lithium-ion batteries, supercapacitors, and hybrid devices [4][5][6][7] . Among them, lithium ion capacitors (LICs) are developed as the optimal candidate, and are able to deliver battery-level energy density, while maintaining capacitor-level power density [5,[8][9][10][11][12] . However, owing to the high price and limited natural reserves of lithium sources [13][14][15][16] , sodium ion batteries (SIBs) and also sodium ion capacitors (SICs) have attracted more attention and intensive investigations in recent years [17,18] .…”

Section: Introductionmentioning

confidence: 99%

Fabricating high-performance sodium ion capacitors with P2-Na0.67Co0.5Mn0.5O2 and MOF-derived carbon

Gu¹,

Kong²,

Cui³

et al. 2019

Journal of Energy Chemistry

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In situ synchrotron wide-angle X-ray scattering study on rapid lithiation of graphite anode via direct contact method for Li-ion capacitors

Cited by 41 publications

References 33 publications

Pre-Lithiation Strategies for Rechargeable Energy Storage Technologies: Concepts, Promises and Challenges

Pre-Lithiation Strategies for Rechargeable Energy Storage Technologies: Concepts, Promises and Challenges

Synthesis of Graphene Nanosheets through Spontaneous Sodiation Process

Fabricating high-performance sodium ion capacitors with P2-Na0.67Co0.5Mn0.5O2 and MOF-derived carbon

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