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Title: Mesoscale elucidation of laser-assisted chemical deposition of Sn nanostructured electrodes

Nanostructured tin (Sn) is a promising high-capacity electrode for improved performance in lithium-ion batteries for electric vehicles. In this work, Sn nanoisland growth for nanostructured electrodes assisted by the pulse laser irradiation has been investigated based on a mesoscale modeling formalism. The influence of pertinent processing conditions, such as pulse duration, heating/cooling rates, and atom flux, on the Sn nanostructure formation is specifically considered. The interaction between the adsorbed atom and the substrate, represented by the adatom diffusion barrier, is carefully studied. It is found that the diffusion barrier predominantly affects the distribution of Sn atoms. For both α-Sn and β-Sn, the averaged coordination number is larger than 3 when the diffusion barrier equals to 0.15 eV. The averaged coordination number decreases as the diffusion barrier increases. The substrate temperature, which is determined by heating/cooling rates and pulse duration, can also affect the formation of Sn nanoislands. For α-Sn, when applied low heating/cooling rates, nanoislands cannot form if the diffusion barrier is larger than 0.35 eV.
Authors:
;  [1] ; ;  [2] ;  [3]
  1. Department of Mechanical Engineering, Texas A and M University, College Station, Texas 77843 (United States)
  2. School of Industrial Engineering, Purdue University, West Lafayette, Indiana 47906 (United States)
  3. Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha 410082 (China)
Publication Date:
OSTI Identifier:
22412873
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 21; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; COOLING; COORDINATION NUMBER; DEPOSITION; DIFFUSION BARRIERS; ELECTRODES; EV RANGE; HEATING; LASER RADIATION; LITHIUM ION BATTERIES; LITHIUM IONS; NANOSTRUCTURES; SUBSTRATES; TIN