Solid-state reactions between iridium thin films and silicon carbide in the 700 °C to 1000 °C temperature range

Njoroge, E.G.; Hlatshwayo, Thulani Thokozani; Mokgadi, T.; Thabethe, Thabsile Theodora; Skuratov, V.A.

doi:10.1016/j.mtcomm.2023.106631

Materials Today Communications

2023

DOI: 10.1016/j.mtcomm.2023.106631

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Solid-state reactions between iridium thin films and silicon carbide in the 700 °C to 1000 °C temperature range

E.G. Njoroge

Thulani Thokozani Hlatshwayo

T. Mokgadi

et al.

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2024

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Exploring silicon nanoparticles and nanographite-based anodes for lithium-ion batteries

Thombare,

Patil,

Humane

et al. 2024

J Mater Sci: Mater Electron

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This study investigates the performance of silicon nanoparticles (Si NPs) and silicon nanographite (SiNG) composite-based anodes for lithium-ion batteries (LiBs). Si offers a promising alternative to traditional graphite anodes due to its higher theoretical capacity, despite encountering challenges such as volume expansion, pulverization, and the formation of a solid electrolyte interface (SEI) during lithiation. SiNPs anode exhibited initial specific capacities of 1568.9 mAh/g, decreasing to 1137.6 mAh/g after 100th cycles, with stable Li–Si alloy phases and high Coulombic efficiency (100.48%). It also showed good rate capability, retaining 1191.3 mAh/g at 8400 mA g−1 (2.82C), attributed to its carbon matrix structure. EIS indicated charge transfer with RB of 3.9 Ω/cm−2 and RCT of 11.4 Ω/cm−2. Contrastingly, SiNG composite anode had an initial capacity of 1780.7 mAh/g, decreasing to 1297.5 mAh/g after 100 cycles. Its composite structure provided cycling stability, with relatively stable capacities after 50 cycles. It exhibited good rate capability (1191.3 mAh/g at 8399.9 mA g−1), attributed to its carbon matrix structure. Electrochemical impedance spectroscopy showed higher resistances for RB of 4.2 Ω/cm−2 and RCT of 15.6 Ω/cm−2 compared to SiNPs anode. These findings suggest avenues for improving energy storage devices by selecting and designing suitable anode materials.

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Exploring silicon nanoparticles and nanographite-based anodes for lithium-ion batteries

Thombare,

Patil,

Humane

et al. 2024

J Mater Sci: Mater Electron

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show abstract

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Solid-state reactions between iridium thin films and silicon carbide in the 700 °C to 1000 °C temperature range

Cited by 1 publication

References 35 publications

Exploring silicon nanoparticles and nanographite-based anodes for lithium-ion batteries

Exploring silicon nanoparticles and nanographite-based anodes for lithium-ion batteries

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