Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 534, Issue -, Pages 47-54Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.09.004
Keywords
Si nanoparticle; Mesoporous shell carbon; Li ion battery; Anode; High capacity
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Funding
- Global Frontier R&D Program on Centre for Multiscale Energy System - Ministry of Education, Science and Technology [NRF-2011-0031571]
- 2016 DGIST-GIST cooperation fund
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An innovative and simple synthesis strategy of silicon nanoparticle (Si NP) core covered by mesoporous shell carbon (MSC) structure is demonstrated. The Si core@MSC (SCMSC) composite is developed for addressing the issues for Si anode material in lithium ion batteries (LIBs) such as high volume expansion and low electrical conductivity. Significant improvement in the electrochemical performance for the SCMSC anode is observed compared with bare Si anode. The SCMSC composite delivers an initial specific capacity of 2450 mAh g(-1) at 0.166 A g(-1) with Coulombic efficiency of 99.2% for 100 cycles. Compared to bare Si anode, the SCMSC anode exhibits much higher Li storage capacity, superior cyclability, and good rate capability, highlighting the advantages of hierarchical MSC in the SCMSC structure. (C) 2018 Elsevier Inc. All rights reserved.
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