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Thermal convection induced TiO2 microclews as superior electrode materials for lithium-ion batteries.
- Source :
- Journal of Materials Chemistry A; 7/7/2018, Vol. 6 Issue 25, p11688-11693, 6p
- Publication Year :
- 2018
-
Abstract
- One great challenge of lithium-ion battery (LIB) commercialization is to achieve high rate capacity at large mass loading density. Here, a thermal-convection hydrothermal method was newly designed and developed to synthesize TiO<subscript>2</subscript> microclews (TiO<subscript>2</subscript> MCs) for their use as LIB electrode materials. The unique MC architecture could be immobilized on a carbon cloth collector uniformly to form a 3D flexible conductive network (TiO<subscript>2</subscript> MCs@CC), which facilitates fast Li-ion and electron transport and promotes continuous lithiation reaction during the charge–discharge process. With these merits, TiO<subscript>2</subscript> MCs@CC with high loading density (up to 4 mg cm<superscript>−2</superscript>) exhibits ultra-high rate performance (75 mA h g<superscript>−1</superscript> at an extremely high current density of 4000 mA g<superscript>−1</superscript>), outstanding long-cycling life (74 mA h g<superscript>−1</superscript> over 1000 cycles at a specific current density of 2000 mA g<superscript>−1</superscript>) and a high initial coulombic efficiency (ICE) of 82%. The demonstrated advantages open up possibilities for fabricating ultrafast rechargeable LIBs with potential industrial applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 6
- Issue :
- 25
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 130363083
- Full Text :
- https://doi.org/10.1039/c8ta03616k