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Ultra-high Areal Capacity Realized in Three-Dimensional Holey Graphene/SnO2 Composite Anodes
Ultra-high Areal Capacity Realized in Three-Dimensional Holey Graphene/SnO2 Composite Anodes
- Source :
- iScience, Vol 19, Iss, Pp 728-736 (2019)
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Summary: Nanostructured alloy-type electrode materials and its composites have shown extraordinary promise for lithium-ion batteries (LIBs) with exceptional gravimetric capacity. However, studies to date are usually limited to laboratory cells with too low mass loading (and thus too low areal capacity) to exert significant practical impact. Herein, by impregnating micrometer-sized SnO2/graphene composites into 3D holey graphene frameworks (HGF), we show that a well-designed 3D-HGF/SnO2 composite anode with a high mass loading of 12 mg cm−2 can deliver an ultra-high areal capacity up to 14.5 mAh cm−2 under current density of 0.2 mA cm−2 and stable areal capacity of 9.5 mAh cm−2 under current density of 2.4 mA cm−2, considerably outperforming those in the state-of-art research devices or commercial devices. This robust realization of high areal capacity defines a critical step to capturing the full potential of high-capacity alloy-type electrode materials in practical LIBs. : Energy Storage; Nanomaterials; Energy Materials Subject Areas: Energy Storage, Nanomaterials, Energy Materials
- Subjects :
- 0301 basic medicine
Multidisciplinary
Materials science
Graphene
Composite number
Nanotechnology
02 engineering and technology
Energy Storage
021001 nanoscience & nanotechnology
7. Clean energy
Energy Materials
Energy storage
Anode
Areal capacity
Nanomaterials
law.invention
03 medical and health sciences
030104 developmental biology
law
Gravimetric analysis
lcsh:Q
lcsh:Science
0210 nano-technology
Current density
Subjects
Details
- ISSN :
- 25890042
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- iScience
- Accession number :
- edsair.doi.dedup.....ba8888e2531785f297291b1109ad682e
- Full Text :
- https://doi.org/10.1016/j.isci.2019.08.025