Graphite microspheres decorated with Si particles derived from waste solid of organosilane industry as high capacity anodes for Li-ion batteries

A Green and Facile Way to Prepare Granadilla‐Like Silicon‐Based Anode Materials for Li‐Ion Batteries

“…27-1402), respectively. [ 8 ] Besides the Si phase, the peak at about 25.0° can be assigned to the (002) plane of carbon (JCPDS No. 65-6212).…”

“…[1][2][3][4][5][6] However, the dramatic volume change (>300%) during lithiation and delithiation processes leads to severe pulverization and continual formation of solid electrolyte interphase (SEI) on the newly formed silicon surfaces, resulting in a large capacity loss. [7][8][9][10][11] Therefore, the cycling performance of silicon-based anodes is still far from satisfactory from a commercial point of view. [ 12 ] Silicon nanoparticles (Si NPs) have been found to tolerate extreme changes in volume with cycling.…”

“…[ 12 ] Silicon nanoparticles (Si NPs) have been found to tolerate extreme changes in volume with cycling. [ 13 ] Hence, great efforts have been made to improve the cycling stability and electrical conductivity by using various Si-based nanostructures, including Si nanowires, [ 3,14,15 ] porous Si, [16][17][18][19] and conductive agent coated Si such as carbon, [ 18,20,21 ] Ag, [ 22,23 ] and conducting polymer. [ 24 ] Among them, a yolkshell-structured carbon@void@silicon (CVS) composite [ 25,26 ] is quite promising for practical applications, because the void space between the outer carbon shell and the inside Si NP allows the room for volume changes of Si NP without deforming the carbon shell and SEI fi lm, which in turn allows for the growth of a stable SEI on the surface of the outer carbon shell.…”

Electrochemical properties of the ternary alloy Li5AlSi2 synthesized by reacting LiH, Al and Si as an anodic material for lithium-ion batteries

“…In other words, the main active lithium storage species was converted to the amorphous LieSi and LieAl alloys after 1 Li-extraction/ insertion cycle. It is well known that Si-based [6,8,27] and Albased [34] anodic materials suffer from huge volume change during Li insertion/extraction, which is responsible for the pulverization of alloy particles and subsequent electrical disconnection from current collectors. This should be the most important reason for the fast capacity fading.…”

One-step synthesis of a silicon/hematite@carbon hybrid nanosheet/silicon sandwich-like composite as an anode material for Li-ion batteries

“…3,[6][7][8][9][10][11][12][13][14] Despite of all these advantages, the full utilization of silicon or α-Fe 2 O 3 -based batteries to date has been hindered by a series of obstacles, including the poor cycle life and rate performance, resulted from its large volumetric expansion during the cycling and low ionic/electronic conductivity. [15][16][17][18][19] Hence, great efforts have been made to further improve their electrochemical performance by using various silicon-containing (silicon nanowires, 10,[20][21] silicon nanotubes, 22 porous structures silicon, 23 and carbon coated silicon [24][25] …”