Nanostructured Sn30Co30C40 alloys for lithium-ion battery negative electrodes prepared by horizontal roller milling

Ferguson, P.; Le, Dinh-Ba; Todd, A. D. W.; Martine, Milena; Trussler, S.; Obrovac, M. N.; Dahn, J. R.

doi:10.1016/j.jallcom.2014.01.159

Cited by 15 publications

(14 citation statements)

References 11 publications

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“…Even more startling is that it was previously believed that the synthesis of amorphous SnCoC alloys was not achievable by SPEX milling, especially when Sn, Co, and C precursors were employed. 6,12 It is clear that the optimized SPEX milling conditions developed here are far superior to those used in previous investigations. Further information about Sn 30 Co 30 C 40 alloy microstructure can be obtained from its electrochemical performance in Li half cells.…”

Section: -8mentioning

confidence: 73%

“…> 1 week). 12 Traditional methods of making these alloys (a few large milling balls in each SPEX vial) using Sn, Co and C powder precursors cannot produce fully amorphous alloys. Instead, only nanocrystalline alloys with grain sizes of about 14 nm are 119 Sn Mössbauer effect spectra of Sn 30 Co 30 C 40 prepared by milling Sn, Co, C powders in a SPEX mill for four hours with the optimum SPEX milling conditions described here.…”

Section: B Optimized Spex Milling Of Sncoc Alloysmentioning

confidence: 99%

“…The XRD pattern is similar to that obtained by Ferguson et al after 284 hours of low energy milling. 12 A Mössbauer spectrum of the Sn 30 Co 30 C 40 alloy is also shown in Figure 6, with fitting results shown in Table II. The spectrum is composed of a doublet with a center shift and quadrupole splitting that are characteristic of amorphous CoSn grains in a carbon matrix and a small singlet at 0 mm/s corresponding to the presence of a small SnO 2 impurity.…”

Section: -8mentioning

confidence: 99%

“…6,8 Recently it has been shown that low energy milling can result in the formation of alloys that are more amorphous than SPEX milled alloys. 12 In contrast to SPEX milling in which products can reach a steady state in hours/days, steady state conditions are typically achieved only after weeks of roller milling. [12][13][14] It occurred to us that the low energy milling regime was not fully explored for the SPEX milling method because it is generally believed that only high energy impacts contribute to alloying, as discussed above.…”

Section: Introductionmentioning

confidence: 99%

“…12 In contrast to SPEX milling in which products can reach a steady state in hours/days, steady state conditions are typically achieved only after weeks of roller milling. [12][13][14] It occurred to us that the low energy milling regime was not fully explored for the SPEX milling method because it is generally believed that only high energy impacts contribute to alloying, as discussed above. By making the ball size substantially smaller than what is typically used, the impact energy in a SPEX mill could be greatly reduced.…”

Section: Introductionmentioning

confidence: 99%

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Rapid mechanochemical synthesis of amorphous alloys

2017

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A rapid method for preparing amorphous alloys has been developed utilizing a SPEX high energy ball mill. Parameters such as ball size, mass of balls and milling time, were systematically optimized to prepare amorphous alloys quickly. Amorphous alloys previously not thought possible to synthesize by means of SPEX milling were made amorphous by the new method. When applied to the preparation of Sn-Co-C and Si-Fe alloys, the method was found to produce fully amorphous alloys in a matter of hours instead of days or weeks of milling by traditional techniques. Electrochemical performance of the alloys produced by the rapid milling technique in Li cells was found to be the same or superior to alloys produced by the more time consuming methods, confirming their amorphous microstructure.

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Section: -8mentioning

confidence: 73%

Section: B Optimized Spex Milling Of Sncoc Alloysmentioning

confidence: 99%

Section: -8mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rapid mechanochemical synthesis of amorphous alloys

2017

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Alloying and Nanotechnology for Sn‐based Anode Materials: Paving the Way to the Future of Lithium‐Ion Batteries

Ding,

Zhang,

et al. 2023

Batteries & Supercaps

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The development of lithium‐ion batteries (LIBs) with high energy density is of utmost importance to meet the growing demand for 3C devices and electric automobiles worldwide. Over the past three decades, there has been significant interest in Sn‐based anode materials for LIBs, owing to their high specific capacity and low charge/discharge plateau. Two primary strategies, namely alloying and nanotechnology, have been extensively investigated to enhance the electrochemical performance of Sn‐based anodes. However, the complete understanding and recognition of the full potential of these strategies, both in the past and future, remains incomplete. This review aims to provide a comprehensive discussion on the development of Sn‐based anodes prepared using the aforementioned strategies. Furthermore, it emphasizes the practical potential of Sn‐based anodes and the associated preparation technologies for large‐scale production. Establishing a strong connection between these technologies and high‐performance Sn‐based composites is crucial, and this objective will be achieved through an extensive comparison and detailed introduction of relevant concepts. By addressing these aspects, this review will contribute to the advancement of Sn‐based anodes research and its application in high‐performance LIBs, ultimately driving progress in the field of energy storage.

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