Monodisperse CoSn and NiSn nanoparticles supported on commercial carbon as anode for lithium- and potassium-ion batteries
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Document typeArticle
Defense date2020-01-07
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Abstract
Monodisperse CoSn and NiSn nanoparticles were prepared in solution and supported on commercial carbon black. The obtained nanocomposites were applied as anodes for Li- and K-ion batteries. CoSn@C delivered stable average capacities of 850, 650, and 500 mAh g–1 at 0.2, 1.0, and 2.0 A g–1, respectively, well above those of commercial graphite anodes. The capacity of NiSn@C retained up to 575 mAh g–1 at a current of 1.0 A g–1 over 200 continuous cycles. Up to 74.5 and 69.7% pseudocapacitance contributions for Li-ion batteries were measured for CoSn@C and NiSn@C, respectively, at 1.0 mV s–1. CoSn@C was further tested in full-cell lithium-ion batteries with a LiFePO4 cathode to yield a stable capacity of 350 mAh g–1 at a rate of 0.2 A g–1. As electrode in K-ion batteries, CoSn@C composites presented a stable capacity of around 200 mAh g–1 at 0.2 A g–1 over 400 continuous cycles, and NiSn@C delivered a lower capacity of around 100 mAh g–1 over 300 cycles.
CitationLi, J. [et al.]. Monodisperse CoSn and NiSn nanoparticles supported on commercial carbon as anode for lithium- and potassium-ion batteries. "ACS Applied materials and interfaces", 7 Gener 2020, vol. 12, núm. 4, p. 4414-4422.
ISSN1944-8252
Publisher versionhttps://pubs.acs.org/doi/10.1021/acsami.9b16418
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