A5063914159- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Semiconductor materials and devices
- Semiconductor materials and interfaces
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Advancements in Semiconductor Devices and Circuit Design
- Nanowire Synthesis and Applications
- Supercapacitor Materials and Fabrication
- MXene and MAX Phase Materials
University of Limerick
2021-2022
Binder and conductive additive-free Si nanowires (NWs) grown directly on the current collector have shown great potential as next generation Li-ion battery anodes. However, low active material mass loadings consequentially areal capacities remained a challenge in their development. Herein, we report high-density growth of NWs carbon cloth (CC) for use The NW reactions were carried out using modified, glassware-based solvent vapor (SVG) process. Optimized conditions applied to CC substrates...
Abstract High loading (>1.6 mg cm −2 ) of Si nanowires (NWs) is achieved by seeding the growth from a dense array Cu 15 4 NWs using tin seeds. A one‐pot synthetic approach involves direct CuSi on foil that acts as textured surface for Sn adhesion and NW nucleation. The high achievable enabled area bolstered secondary branches both stems, forming active layer, interconnected with an electrically conducting (denoted Si/CuSi). When employed Li‐ion battery anodes, Si/CuSi nest structure...
Lithium (Li) metal batteries (LMBs) provide superior energy densities far beyond current Li-ion (LIBs) but practical applications are hindered by uncontrolled dendrite formation and the build-up of dead Li in "hostless" anodes. To circumvent these issues, we created a 3D framework carbon paper (CP) substrate decorated with lithiophilic nanowires (silicon (Si), germanium (Ge), SiGe alloy NWs) that provides robust host for efficient stripping/plating metal. The Li22 Si5 , (Si0.5 Ge0.5 )5, Ge5...
Abstract A scalable and cost‐effective process is used to electroplate metallic Zn seeds on stainless steel substrates. Si Ge nanowires (NWs) are subsequently grown by placing the electroplated substrates in solution phase of a refluxing organic solvent at temperatures >430 °C injecting respective liquid precursors. The native oxide layer formed reactive metals such as can obstruct NW growth removed situ reducing agent LiBH 4 . findings show that use catalyst produces defect‐rich NWs be...
The electrochemical performance of Ge, an alloying anode in the form directly grown nanowires (NWs), Li-ion full cells (vs LiCoO2) was analyzed over a wide temperature range (−40 to 40 °C). LiCoO2||Ge standard electrolyte exhibited specific capacities 30× and 50× those LiCoO2||C at −20 −40 °C, respectively. We further show that propylene carbonate addition improved low-temperature cells, achieving capacity 1091 mA h g–1 after 400 cycles when charged/discharged °C. At additive mixture ethyl...
The incorporation of Ge into Si x 1− alloy NWs with their amorphization boosted performance in Na-ion batteries as compared to parent a-Si and a-Ge NWs.
Herein, we demonstrate the ability of Zn to catalyze growth Si nanowires via reaction temperature determined, vapour-liquid-solid (VLS) or vapour-solid-solid (VSS) mechanisms. This is first reported use a type B catalyst grow VSS mechanism our knowledge whereby highly faceted seeds resulted in an increased NW diameter. was used induce diameter variations along axial length individual by transitioning between VLS and growth.