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High-Energy Density Li metal Dual-Ion Battery with a Lithium Nitrate-Modified Carbonate-Based Electrolyte.
- Source :
-
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2019 May 22; Vol. 11 (20), pp. 18504-18510. Date of Electronic Publication: 2019 May 07. - Publication Year :
- 2019
-
Abstract
- Lithium (Li) metal is a favorable anode for most energy storage equipment, thanks to its higher theoretical specific capacity. However, nonuniform Li nucleation/growth results in large-sized and irregular dendrites generated from the Li anode, which causes rapid capacity fade and serious safety hazard, hindering its widespread practical applications. In this paper, with the aid of a lithium nitrate (LiNO <subscript>3</subscript> ) additive in a carbonate-based electrolyte, the Li anode shows low hysteresis for in excess of 1000 h at a current density of 0.5 mA cm <superscript>-2</superscript> . At the same time, a Li-graphite dual-ion battery exhibits an outstanding cycling stability at 5C; after 1000 cycles, 81% of the capacity is retained. After calculation, the Li-graphite dual-ion battery shows a competitive specific energy density of 243 Wh kg <superscript>-1</superscript> at a power density of 234 W kg <superscript>-1</superscript> . Moreover, the linear sweep voltammetry test was first performed to analyze the Li nucleation/growth mechanism and explain the effect of the LiNO <subscript>3</subscript> additive. The superior electrochemical properties of the Li-graphite dual-ion battery are ascribed to the formation of smooth Li composed of Li nanoparticles and a steady solid electrolyte interface film.
Details
- Language :
- English
- ISSN :
- 1944-8252
- Volume :
- 11
- Issue :
- 20
- Database :
- MEDLINE
- Journal :
- ACS applied materials & interfaces
- Publication Type :
- Academic Journal
- Accession number :
- 31033271
- Full Text :
- https://doi.org/10.1021/acsami.9b05053