Nano-Sn embedded in expanded graphite as anode for lithium ion batteries with improved low temperature electrochemical performance

Yan, Yonggao; Ben, Liubin; Zhan, Yuanjie; Huang, Xuejie

doi:10.1016/j.electacta.2015.11.015

Cited by 94 publications

(48 citation statements)

References 34 publications

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“…This feature makes the technique suitable for a large range of applications. This explains why it has been widely used in electrochemical related fields as fuel cells [6][7][8][9][10][11][12], batteries [13][14][15][16][17][18], corrosion [19][20][21][22][23], coatings [24][25][26], electrochemical sensors [27][28] and supercapacitors [29][30][31][32]. This electrochemical technique has also been used in fields that are not traditionally related to electrochemistry as biochemical assays [33][34][35][36], oncology [37][38][39] and immunology [40][41], amongst others.…”

Section: Introductionmentioning

confidence: 99%

Harmonic analysis based method for linearity assessment and noise quantification in electrochemical impedance spectroscopy measurements: Theoretical formulation and experimental validation for Tafelian systems

Giner-Sanz

Ortega

Pérez-Herranz

2016

Electrochimica Acta

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ElsevierGiner-Sanz, JJ.; Ortega Navarro, EM.; Pérez-Herranz, V. (2016). Harmonic analysis based method for linearity assessment and noise quantification in electrochemical impedance spectroscopy measurements: Theoretical formulation and experimental validation for Tafelian systems. Abstract:Electrochemical Impedance Spectroscopy (EIS) is an electrochemical measurement technique that has been applied to a broad range of applications. Three conditions must be fulfilled in order to obtain valid EIS measurements: causality, linearity and stationarity. The non fulfilment of any of these conditions may lead to distorted and biased EIS spectra. Consequently, the verification of the four fundamental conditions is mandatory before accepting any results extracted from an EIS spectrum. In this work, a harmonic analysis based method for linearity assessment and noise quantification in EIS measurements is presented, and validated both from an experimental point of view and from a theoretical point of view, for Tafelian systems. It was shown that the presented method was able to quantitatively assess the nonlinearity of the system; and to quantify and characterize the noise. Moreover, the presented method is able to determine the threshold frequency of the system above which the system does not present significant nonlinear effects even for very large perturbation amplitudes.

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Section: Introductionmentioning

confidence: 99%

Harmonic analysis based method for linearity assessment and noise quantification in electrochemical impedance spectroscopy measurements: Theoretical formulation and experimental validation for Tafelian systems

Giner-Sanz

Ortega

Pérez-Herranz

2016

Electrochimica Acta

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“…The main reason for the difference in the first discharge curve of Co 3 O 4 and Co 3 O 4 @G based batteries may be caused by the different electron conductivity on the surface and interior of Co 3 O 4 nanoparticles derived from the introduction of graphene. Figure 6b shows that the Co 3 O 4 @G composite can retain superior low temperature capacity retentions compared with the pure Co 3 O 4 and the other reported low temperature anode materials [27,44–51] . The reversible capacity of Co 3 O 4 @G in the first cycle is 920.4 mAh g −1 at an operating temperature of 30 °C with 0.2 A g −1 current density, while the capacity retention ratios at 0, −10, −20 and −30 °C are 86.8%, 79.4%, 64.5% and 58.4%, respectively.…”

Section: Resultsmentioning

confidence: 94%

“…In addition, graphite anodes only retain ∼12% of their room temperature capacity when the graphite‐based LIBs is operated at −20 °C [26] . Although the compositing of graphite with metals or metal oxides and optimizing its morphology and crystallography have shown certain improvements in the electrochemical behavior at subzero temperatures, [18,19,27] the issue of Li plating has not been resolved completely due to its inherent low lithiation potential and the inevitable potential polarization. Similarly, the phenomenon of capacity loss and Li plating at subzero temperature also occur in alloying‐type Si‐based materials, which also possess a low operation potential of 0.2–0.4 V [28] .…”

Section: Introductionmentioning

confidence: 99%

Stable Lithium Storage at Subzero Temperatures for High‐capacity Co₃O₄@graphene Composite Anodes

et al. 2020

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Achieving high energy density and long‐term stability at subzero temperatures remains one of the main challenges for the development of lithium‐ion batteries. Shortcomings in energy density and stability mainly highlight on the increase in internal resistance and electrode polarization at subzero temperatures, which greatly affect the reversible capacities of lithium‐ion batteries. In this work, a conversion type Co3O4@graphene (Co3O4@G) composite is prepared via a simple hydrothermal method and first evaluated at subzero temperatures. Benefitting from the especially suitable lithiation/delithiation potentials of Co3O4, ingenious nanostructure and high conductivity of graphene, the Co3O4@G anode exhibits much higher capacity retentions than intercalation‐ and alloying‐type anodes at subzero temperatures, with 58.4% of room‐temperature capacity retention at −30 °C for initial cycle and a highly stable reversible capacity of 605.0 mAh g−1 (0.5 A g−1) for 600 cycles at −10 °C. Furthermore, very high capacities of ∼920.4 mAh g−1 (0.2 A g−1) can be maintained at 30 °C, and ∼450.2 mAh g−1 (0.5 A g−1) can be remained at −20 °C during alternating cycling. This work demonstrates that conversion‐type Co3O4@G composites have superior extreme temperature lithium storage capabilities and can be viable Li‐ion anode materials with fast and highly efficient ion/electron transport capacity at subzero operating temperatures.

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“…This low‐cost and simple modification strategy for graphite developed in this study may also be extended to graphite‐based composites (silicon/graphite, metal/graphite, oxide/graphite, etc. ), mesocarbon microbeads, carbon black, and some other carbon materials with graphite‐like polycyclic aromatic structures.…”

Section: Discussionmentioning

confidence: 99%

Surface‐Functionalized Graphite as Long Cycle Life Anode Materials for Lithium‐Ion Batteries

et al. 2020

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Graphite is the major anode material of commercial lithium‐ion batteries (LIBs), and thus improving its cycling stability is an effective approach to extend battery life. In this study, succinic anhydride group, methoxyethanol, and methoxypolyethylene glycol segments are chemically bonded to the surfaces of graphite particles by the Diels‐Alder and the subsequent esterification reactions. The synthesized functionalized graphites are excellent in water dispersibility. The electrochemical results indicate that the functionalization slightly reduces the initial coulombic efficiencies of the graphite anodes, but significantly changes the cycling stability and high C‐rate performance of the corresponding lithium‐ion cells. In particular, the cell based on the graphite functionalized by long‐chain polyethylene glycol exhibits an improvement of 24.1 % in cycle life compared with the pristine graphite. Further analysis shows that these trace organic groups change the properties of the solid‐electrolyte interface (SEI) layer depositing on the graphite surfaces, and therefore influence the performance of the cells.

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Nano-Sn embedded in expanded graphite as anode for lithium ion batteries with improved low temperature electrochemical performance

Cited by 94 publications

References 34 publications

Harmonic analysis based method for linearity assessment and noise quantification in electrochemical impedance spectroscopy measurements: Theoretical formulation and experimental validation for Tafelian systems

Harmonic analysis based method for linearity assessment and noise quantification in electrochemical impedance spectroscopy measurements: Theoretical formulation and experimental validation for Tafelian systems

Stable Lithium Storage at Subzero Temperatures for High‐capacity Co₃O₄@graphene Composite Anodes

Surface‐Functionalized Graphite as Long Cycle Life Anode Materials for Lithium‐Ion Batteries

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Nano-Sn embedded in expanded graphite as anode for lithium ion batteries with improved low temperature electrochemical performance

Cited by 94 publications

References 34 publications

Harmonic analysis based method for linearity assessment and noise quantification in electrochemical impedance spectroscopy measurements: Theoretical formulation and experimental validation for Tafelian systems

Harmonic analysis based method for linearity assessment and noise quantification in electrochemical impedance spectroscopy measurements: Theoretical formulation and experimental validation for Tafelian systems

Stable Lithium Storage at Subzero Temperatures for High‐capacity Co3O4@graphene Composite Anodes

Surface‐Functionalized Graphite as Long Cycle Life Anode Materials for Lithium‐Ion Batteries

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Stable Lithium Storage at Subzero Temperatures for High‐capacity Co₃O₄@graphene Composite Anodes