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ACS Appl Mater Interfaces. 2016 Nov 9;8(44):30264-30270. Epub 2016 Oct 31.

Ultrafast Lithium Storage Using Antimony-Doped Tin Oxide Nanoparticles Sandwiched between Carbon Nanofibers and a Carbon Skin.

Author information

1
Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials and ‡Department of Materials Science and Engineering, Seoul National University of Science and Technology , Seoul 139-743, Korea.

Abstract

Metal oxides as anode materials for Li-ion batteries (LIBs) are of significant interest to many potential technologies because of their high theoretical capacity value, low price, and environmentally friendly features. In spite of these considerable benefits and ongoing progress in the field, momentous challenges exist, related with structural disintegration due to volume expansion of electrode materials. This leads to rapid capacity decline and must be resolved in order to progress for realistic utilization of LIBs with ultrafast cycling stability. This article proposes a novel architecture of Sb-doped SnO2 nanoparticles sandwiched between carbon nanofiber and carbon skin (CNF/ATO/C) using electrospinning and hydrothermal methods. The CNF/ATO/C exhibits superb electrochemical behavior such as high specific capacity and outstanding cycling stability (705 mA h g-1 after 100 cycles), outstanding high-rate performance (411 mA h g-1 at 2000 mA g-1), and ultrafast cycling stability (347 mA h g-1 at 2000 mA g-1 after 100 cycles), which is high compared to any reported value using SnO2-based anode materials. Thus, this unique architecture furnishes profitable effects, including electroactive sites, structural stability, and electrical conductivity, which can potentially be realizes for ultrafast LIBs.

KEYWORDS:

Li-ion battery; anode; antimony-doped tin oxide; carbon skin; sandwich structure

PMID:
27759368
DOI:
10.1021/acsami.6b10868

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