Highly Reversible Lithium Storage in Spheroidal Carbon‐Coated Silicon Nanocomposites as Anodes for Lithium‐Ion Batteries

Liquid-phase plasma synthesis of silicon quantum dots embedded in carbon matrix for lithium battery anodes

“…However, these peaks observed during charge process were blue shifted about 10 mV compared to the previous result reported by Cui et al [2], who observed two bell-shaped peaks at 100 and 250 mV during charge at second cycle using single crystalline Si nanowires as electrode [2]. This phenomenon is due to the different solid/electrolyte interface for both cases (namely, silicon/electrolyte and carbon/electrolyte, respectively) [1]. Therefore, the surface kinetics will be different and result in the shifted peaks observed in the differential capacity curves [12,31].…”

“…Rechargeable lithium ion batteries are the most useful energy storage devices due to their high energy density and very high efficiency [1,2]. Whereas, the limited specific charge storage capacity of lithium ion batteries lead to their performance still lying behind the demands of higher energy density, higher power density, and longer cycle life for future applications.…”

Hard X-ray Photoelectron Spectroscopy (HAXPES) Investigation of the Silicon Solid Electrolyte Interphase (SEI) in Lithium-Ion Batteries

“…The design of nano-structured silicon materials has improved the performance of silicon anodes by limiting the mechanical damage to the electrode particles. [4][5][6][7][8] Alternatively, the development of novel electrolytes can improve the performance of silicon anodes via the generation of a superior anode SEI. The SEI must have good lithium ion conduction, but be electrically insulating to prevent further reduction of the electrolyte by the lithiated silicon surface.…”

“…The structure of the silicon anode SEI has typically been modified by the incorporation of sacrificial electrolyte additives which react with the surface of the silicon to generate an SEI with greater mechanical stability. 5,[9][10][11][12][13][14][15][16] There have been several investigations of the SEI generated on silicon nanoparticle anodes. 12,[15][16][17][18] Most of these investigations support a similar composition to the SEI observed on graphite anodes.…”

Copper Phosphate as a Cathode Material for Rechargeable Li Batteries and Its Electrochemical Reaction Mechanism

“…Those important applications have driven the global search for novel electrode materials with higher specific capacities and energy densities [1][2][3][4][5] . Certain promising anode materials, such as Si and Sn, have shown a large capacity of up to 3000 mAh/g [6][7][8][9] . On the other hand, commercialized intercalation-type cathode materials exhibit much lower capacities, for example LiCoO 2 (theoretical capacity: ~274 mAh/g) and LiFePO 4 (theoretical capacity: ~170 mAh/g).Thus, cathode materials have become a technical "bottleneck" in the further development of Li-ion batteries with a high energy density.…”