Electrochemical behavior of a lithium-pre-doped carbon-coated silicon monoxide anode cell

Seong, Il Won; Kim, Ki Tae; Yoon, Woo Young

doi:10.1016/j.jpowsour.2008.11.029

Cited by 80 publications

(59 citation statements)

References 13 publications

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“…There are different methods to perform pre-lithiation with SLMP. One route is to spread out the particles on the electrode surface with a subsequent pressing in order to activate the SLMP as described above [33,45,73]. Another possibility is to prepare a SLMP/solvent (e.g., hexane) suspension, which is then dropped onto the surface of the electrode, again followed by a compression of the electrode after the solvent is evaporated [31,74].…”

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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“…Therefore, Li þ can be effectively doped into NiO owing to this similarity of ion size. In addition, Li doping during synthesis may be equivalent to the role of prelithiation, which have beneficial impact on the initial coulombic efficiency [58,59]. Therefore, it is reasonable to predict that Li doping is also favorable to improve the electrical conductivity of NiO powders and will contribute to better electrochemical performance of Li-doped NiO when used as anode materials for LIB batteries.…”

Section: Introductionmentioning

confidence: 99%

One-step synthesis of Li-doped NiO as high-performance anode material for lithium ion batteries

Wang

et al. 2016

Ceramics International

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“…7 As reported in Ref. 15 and 16, a Li pre-doping method improves the coulombic efficiency of a Si electrode for LIBs. Therefore, we tried using Na pre-doping to improve the coulombic efficiency.…”

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confidence: 77%

Sodium-Ion Insertion/Extraction Properties of Sn-Co Anodes and Na Pre-Doped Sn-Co Anodes

Yui

Ono

Hayashi

et al. 2015

J. Electrochem. Soc.

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The electrochemical properties of Sn-Co were investigated to show the correlation between the cycle performance and the binders of the electrode component materials. Sn-Co electrodes with polyacrylic acid (PAA) exhibited a better cycle property (about 300 mAh/g up to 30 cycles) than those with polyvinylidene difluoride (PVdF). This better cycle property with PAA was due to the slight change in the volume of the electrode that occurred during cycling as revealed by in-situ light microscopy. In addition, Na pre-doping in Sn-Co electrodes improved the average coulombic efficiency from 95.4% to 99.9% at 2-10 cycles. Lithium-ion batteries (LIBs) are used for power storage in electrical products and electric vehicles, and the demand for them is likely to increase. However, since lithium is not an abundant metal, it is expensive. On the other hand, because sodium is abundant and cheap; and interest in sodium-ion batteries (SIBs) has been growing.The materials that have been studied for use as SIB anodes include hard carbon 1-4 and tin. [5][6][7] Hard carbon can be cycled more than 100 times, but the capacity is only about 250 mAh/g. 1 In addition, the capacities of sodium cells with hard carbon electrodes are smaller than equivalent lithium cells. 4 On the other hand, the capacity of tin is about 500 mAh/g, but tin electrodes have the drawback of poor cycle performance (only several cycles) due to the large expansion and contraction of the volume of tin electrodes (about 5.3 times larger than hard carbon) 6 that accompanies Na-ion insertion (alloying) and extraction (dealloying). These alloying/dealloying processes of Sn with Na are similar to those of Sn with Li. Therefore, a key factor is that tin-based electrodes inhibit the change in volume during cycling. As reported in Ref. 6, the cycle properties of tin electrodes for SIBs can be improved by adopting a polyacrylic acid (PAA) binder. In that study, the capacity of Sn electrodes remained about 500 mAh/g after 20 cycles. Thus, a binder is one of the most important component materials in an electrode.LIBs using Sn-Co anodes were first commercialized by Sony Corporation.8 The Sn-Co anodes exhibit good cycle performance because cobalt does not alloy with lithium and cobalt buffer the change in volume of electrode during cycling. [9][10][11][12][13] This paper evaluates the electrochemical properties of Sn-Co electrodes for SIBs to reveal the correlation between cycle performance and binder.Sn-Co electrodes were prepared with polyvinylidene difluoride (PVdF) or PAA as binders. The electrochemical properties of Sn-Co electrodes with a PAA binder were examined by performing galvanostatic discharge-charge experiments, and the results were compared with those obtained with PVdF as the binder. Additionally, the change in volume of a Sn-Co electrode with PAA or PVdF during Na-ion insertion (alloying)/extraction (dealloying) was evaluated by in-situ light microscopy for the first time. The crystallographic structural change of Sn-Co during cycling was characterized by X-ray d...

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Electrochemical behavior of a lithium-pre-doped carbon-coated silicon monoxide anode cell

Cited by 80 publications

References 13 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

One-step synthesis of Li-doped NiO as high-performance anode material for lithium ion batteries

Sodium-Ion Insertion/Extraction Properties of Sn-Co Anodes and Na Pre-Doped Sn-Co Anodes

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