2007
DOI: 10.1002/adma.200700621
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Nest‐like Silicon Nanospheres for High‐Capacity Lithium Storage

Abstract: Rechargeable lithium-ion batteries are considered intriguing power sources for a wide variety of applications because of their high energy density, lightweight design and environmental friendliness.[1] With respect to the anode of Li-ion batteries, silicon-based materials have attracted tremendous interest owing to their extremely high theoretical capacity of about 4200 mAh g -1 (with the formation of Li 4.2 Si alloy), [2] which is much higher than that of commercialized graphitic carbon (372 mAh g -1 for comp… Show more

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Cited by 469 publications
(331 citation statements)
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“…The core-shell nanowire design enables a very fast cycle, about seven minutes, and can provide a very large amount of power. These results are good as those for nest-like Si nanospheres made by a modified solvothermal method, 8 which exhibited large specific capacity of 3628, 3291, and 3052 mAh/g at the current density of 400 (0.1 C), 800 (0.2 C) and 2000 mA/g (0.5 C), respectively. After cycling for up to 48 cycles at 2000 mA/g, the electrode made of the nest-like Si nanospheres retained 1095 mAh/g.…”
Section: Si-carbon Composite Anode Materialssupporting
confidence: 66%
“…The core-shell nanowire design enables a very fast cycle, about seven minutes, and can provide a very large amount of power. These results are good as those for nest-like Si nanospheres made by a modified solvothermal method, 8 which exhibited large specific capacity of 3628, 3291, and 3052 mAh/g at the current density of 400 (0.1 C), 800 (0.2 C) and 2000 mA/g (0.5 C), respectively. After cycling for up to 48 cycles at 2000 mA/g, the electrode made of the nest-like Si nanospheres retained 1095 mAh/g.…”
Section: Si-carbon Composite Anode Materialssupporting
confidence: 66%
“…Nanostructured Si materials afford promising opportunities to address all of these challenges because of their ability to relax strain. In addition, chemically synthesized Si nanostructures, including nanowires, 3,24 nanocrystals, 25 core−shell nanofibers, 26,27 nanotubes, 6,28 nanospheres, 29,30 nanoporous materials, 31,32 and Si/carbon nanocomposites, 5,33 have demonstrated superior performance compared to bulk Si. Moreover, the Si nanostructures have addressed the issue of separation from the current collector, resulting in significant improvements of electrochemical cycling up to hundreds of cycles.…”
mentioning
confidence: 99%
“…[3,5,11] For example, if the SnO 2 anode comprises hollow and/or porous nanostructures, the local empty space in the structures can partially accommodate the large volume change, delaying capacity fading. [12][13][14][15][16][17][18][19][20] Another commonly used approach is to use nanocomposite materials (e.g., the inactive/ active concept). [1] In particular, nanopainting with carbon has recently been found effective for improving cyclability, where carbon functions as a physical buffering layer for the large volume change (cushion effect).…”
mentioning
confidence: 99%