Cycling behaviour of electrodeposited zinc alloy electrode for secondary lithium batteries

Fujieda, Takuya; Takahashi, S; Higuchi, Shunichi

doi:10.1016/0378-7753(92)80016-5

Cited by 43 publications

(37 citation statements)

References 9 publications

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“…Noticeably, excluded the Cu 11 Zn 89 which rapidly fades, all samples can sustain impressively high current loads up to 10 A g −1 , which correspond, depending on the composition of the alloys, to C rates ranging from 27C to 30C. The initial capacity is also fully recovered after the rate capability test, i.e., when the current load is decreased back to 0.1 A g −1 .…”

Section: Dependence Of Electrochemical Performance On Cu-zn Compositionmentioning

confidence: 70%

“…Interestingly, as displayed in Figure 5b, the dramatic capacity loss of pure Zn after few cycles is already avoided by the introduction of the smallest amount of copper. In fact, Cu 11 Zn 89 delivers capacity values comparable to pure Zn (in the order of 400 mAh g −1 in the second cycle), which are better retained over the first 10 cycles. Although the sudden failure is avoided, the capacity fading is still pronounced, and accompanied by a rather poor coulombic efficiency (see Figure 5c).…”

Section: Dependence Of Electrochemical Performance On Cu-zn Compositionmentioning

confidence: 86%

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3D Porous Cu–Zn Alloys as Alternative Anode Materials for Li‐Ion Batteries with Superior Low T Performance

Varzi

Mattarozzi

Cattarin

et al. 2017

Advanced Energy Materials

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Zinc is recently gaining interest in the battery community as potential alternative anode material, because of its large natural abundance and potentially larger volumetric density than graphite. Nevertheless, pure Zn anodes have shown so far very poor cycling performance. Here, the electrochemical performance of Zn‐rich porous Cu–Zn alloys electrodeposited by an environmentally friendly (aqueous) dynamic hydrogen bubble template method is reported. The lithiation/delithiation mechanism is studied in detail by both in situ and ex situ X‐ray diffraction, indicating the reversible displacement of Zn from the Cu–Zn alloy upon reaction with Li. The influence of the alloy composition on the performance of carbon‐ and binder‐free electrodes is also investigated. The optimal Cu:Zn atomic ratio is found to be 18:82, which provides impressive rate capability up to 10 A g−1 (≈30C), and promising capacity retention upon more than 500 cycles. The high electronic conductivity provided by Cu, and the porous electrode morphology also enable superior lithium storage capability at low temperature. Cu18Zn82 can indeed steadily deliver ≈200 mAh g−1 at −20 °C, whereas an analogous commercial graphite electrode rapidly fades to only 12 mAh g−1.

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Section: Dependence Of Electrochemical Performance On Cu-zn Compositionmentioning

confidence: 70%

Section: Dependence Of Electrochemical Performance On Cu-zn Compositionmentioning

confidence: 86%

3D Porous Cu–Zn Alloys as Alternative Anode Materials for Li‐Ion Batteries with Superior Low T Performance

Varzi

Mattarozzi

Cattarin

et al. 2017

Advanced Energy Materials

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“…Zn 0.98 Fe 0.02 O, the sample with the lower Fe content, shows the characteristic features of pure ZnO at low potentials (D), i.e., the stepwise de-alloying of LiZn. 11,43,44 Differently, Zn 0.88 Fe 0.12 O reveals only a very broad peak in region (D), similarly to Co-doped ZnO. 11 For both samples, feature (D) is followed by a broad peak (E) between 1.32 and 1.51 V. The slightly higher current in case of Zn 0.88 Fe 0.12 O at higher potentials is in good agreement with the previously reported comparison of pure ZnO and Zn 0.9 Co 0.1 O.…”

Section: Resultsmentioning

confidence: 99%

Iron-Doped ZnO for Lithium-Ion Anodes: Impact of the Dopant Ratio and Carbon Coating Content

Mueller

Gutsche

Nirschl

et al. 2016

J. Electrochem. Soc.

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Herein, an investigation of the impact of the dopant and carbon content in iron-doped zinc oxide/carbon composites is presented. For this purpose, a comprehensive morphological, structural, and electrochemical characterization of a series of different compounds is reported, including techniques like X-ray diffraction (XRD), transmission electron microscopy (TEM), inductively coupled plasma optical emission spectroscopy (ICP-OES), thermogravimetric analysis (TGA), specific surface area using the Brunauer-EmmettTeller (BET) algorithm, pycnometry, small-angle X-ray scattering (SAXS), cyclic voltammetry (CV), and galvanostatic cycling. The obtained results reveal an impact of the iron-dopant content on the crystallite and particle size as well as the detailed de-/lithiation mechanism. The effect on the cycling stability, however, appears to be rather minor. The carbon coating content, on the contrary, has a significant influence on the cycling stability and rate capability. According to these results, a carbon content of about 10 wt% is sufficient to achieve stable cycling at lower current densities, while a carbon content of 15-20 wt% allows for specific capacities of 425-500 mAh g −1 , when applying a specific current of 1 A g −1 , for instance. Despite the tremendous commercial success of lithium-ion batteries for a wide variety of applications -ranging from small-scale portable electronics to electric bikes and scooters and, recently, electric vehicles -further enhanced energy and power densities are needed for the realization of a fully electrified public and private transport. [1][2][3][4] While optimized cell designs and battery engineering have a great impact on such improvement, the next great leap forward will require the implementation of new battery chemistries. With regard to the anode side, most research activities within the past years have focused on replacing graphite by alloying or conversion materials, which commonly allow for substantially higher specific capacities. [5][6][7] However, both material classes suffer intrinsic challenges like dramatic volume variations upon de-/lithiation (particularly in case of alloying materials) and relatively wide lithium reaction potentials, accompanied by a substantial voltage hysteresis between charge and discharge (especially in case of conversion materials), resulting in rapid capacity fading of the corresponding electrodes, comparably lower specific energies, and improvable energy storage efficiencies, respectively. [5][6][7] In an attempt to overcome these challenges, we have recently reported a new class of materials -transition metal-doped metal oxides -for which the reduced transition metal (i.e., upon lithiation) enables the reversible formation of Li 2 O, i.e., the conversion reaction. Additionally, the metal itself can form a lithium alloy. [8][9][10][11][12] Within this materials' class a particular focus was, so far, set on Fedoped ZnO with a Zn:Fe ratio of 9:1, providing a theoretical specific capacity of 966 mAh g -1 . 8,9,12 While the nanopart...

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“…Each reacts electrochemically with one equivalent of Li, corresponding to volumetric capacities of 1478 Ah/L and 1411 Ah/L, respectively. The cycle life of crystalline Zn and Al is poor because of 2-phase regions encountered during their lithiation [2]. Despite their similarities, Al-based alloys have been studied extensively as negative electrodes, while Zn containing alloy materials have not been well explored.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies on Zn negative electrodes for Li-ion batteries have reported poor cycle life for pure Zn electrodes [2][3][4]. Hwa et al performed ex-situ X-ray diffraction studies on Zn electrodes and reported that lithiation and delithiation of a Zn electrode at room temperature follow different mechanisms [3]:…”

Section: Introductionmentioning

confidence: 99%

Li-ion battery negative electrodes based on the FexZn1−x alloy system

MacEachern

Dunlap

Obrovac

2015

Journal of Non-Crystalline Solids

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Cycling behaviour of electrodeposited zinc alloy electrode for secondary lithium batteries

Cited by 43 publications

References 9 publications

3D Porous Cu–Zn Alloys as Alternative Anode Materials for Li‐Ion Batteries with Superior Low T Performance

3D Porous Cu–Zn Alloys as Alternative Anode Materials for Li‐Ion Batteries with Superior Low T Performance

Iron-Doped ZnO for Lithium-Ion Anodes: Impact of the Dopant Ratio and Carbon Coating Content

Li-ion battery negative electrodes based on the FexZn1−x alloy system

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