Document Detail


Porous Doped Silicon Nanowires for Lithium Ion Battery Anode with Long Cycle Life.
MedLine Citation:
PMID:  22486769     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Porous silicon nanowires have been well studied for various applications; however, there are only very limited reports on porous silicon nanowires used for energy storage. Here, we report both experimental and theoretical study of porous doped silicon nanowires synthesized by direct etching of boron-doped silicon wafers. When using alginate as binder, porous silicon nanowires exhibited superior electrochemical performance and long cycle life as anode material in lithium ion battery. Even after 250 cycles, capacity remains stable above 2000, 1600 and 1100 mAh/g at current rates of 2 A/g, 4 A/g and18 A/g, respectively, demonstrating high structure stability due to the high porosity and electron conductivity of the porous silicon nanowires. A mathematic model coupling the lithium ion diffusion and the strain induced by lithium intercalation was employed to study the effect of porosity and pore size on the structure stability. Simulation shows silicon with high porosity and large pore size help to stabilize the structure during charge/discharge cycles.
Authors:
Mingyuan Ge; Jiepeng Rong; Xin Fang; Chongwu Zhou
Related Documents :
23234309 - Theory of plasmon-enhanced metal photoluminescence.
22304049 - Perturbation calculation of thermodynamic density of states.
16702289 - Genetic relationship between first-lactation body energy and later-life udder health in...
22570919 - Dosimetric response of a rem-500 in low energy neutron fields typical of nuclear power ...
24344739 - Surfactant assisted porphyrin based hierarchical nano/micro assemblies and their effici...
2637329 - Cellulose fibers from endodontic paper points as an etiological factor in postendodonti...
6430349 - Spectral properties of a mixture of fluorescent pigments produced by pseudomonas aerugi...
24367759 - Energy transfer in complexes of water-soluble quantum dots and chlorin e6 molecules in ...
18642809 - Near-edge x-ray absorption fine structure spectroscopy of diamondoid thiol monolayers o...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-9
Journal Detail:
Title:  Nano letters     Volume:  -     ISSN:  1530-6992     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088070     Medline TA:  Nano Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Component-resolved in vitro diagnosis of carrot allergy in three different regions of Europe.
Next Document:  Endometrial Phospholipase A2 Activity During the Oestrous Cycle and Early Pregnancy in Mares.