Better Cycling Performances of Bulk Sb in Na-Ion Batteries Compared to Li-Ion Systems: An Unexpected Electrochemical Mechanism
Top Cited Papers
- 11 December 2012
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 134 (51), 20805-20811
- https://doi.org/10.1021/ja310347x
Abstract
International audiencePure micrometric antimony can be successfully used as negative electrode material in Na-ion batteries, sustaining a capacity close to 600 mAh g-1 at a high rate with a Coulombic efficiency of 99 over 160 cycles, an extremely high capacity compared to any other compound tested against both Li and Na. The reaction mechanism with Na does not simply go through the alloying mechanism observed for Li where the intermediate species are those expected from the phase diagram. In the case of Na, the intermediate phases are mostly amorphous and could not be precisely identified. Surprisingly, we evidenced that a competition takes place at the end of the discharge of the Sb/Na cell between the formation of the hexagonal and the cubic polymorphs of Na3Sb, the last being described in the literature as unstable at atmospheric pressure and only synthesized under high pressure (1-9 GPa). In addition, fluoroethylene carbonate added to the electrolyte combined with an appropriate electrode formulation based on carboxymethyl cellulose, carbon black, and vapor ground carbon fibers seems to be determinant in the excellent performances of this materialKeywords
This publication has 32 references indexed in Scilit:
- High capacity, reversible alloying reactions in SnSb/C nanocomposites for Na-ion battery applicationsChemical Communications, 2012
- Reversible Insertion of Sodium in TinJournal of the Electrochemical Society, 2012
- Fluorinated Ethylene Carbonate as Electrolyte Additive for Rechargeable Na BatteriesACS Applied Materials & Interfaces, 2011
- Reversible Sodium Ion Insertion in Single Crystalline Manganese Oxide Nanowires with Long Cycle LifeAdvanced Materials, 2011
- An Electrochemical Cell for Operando Study of Lithium Batteries Using Synchrotron RadiationJournal of the Electrochemical Society, 2010
- A new ternary Li4FeSb2 structure formed upon discharge of the FeSb2/Li cellJournal of Power Sources, 2009
- NiSb2 as negative electrode for Li-ion batteries: An original conversion reactionJournal of Power Sources, 2007
- Electrochemistry of InSb as a Li Insertion Host: Problems and ProspectsJournal of the Electrochemical Society, 2001
- Behavior of Some Binary Lithium Alloys as Negative Electrodes in Organic Solvent‐Based ElectrolytesJournal of the Electrochemical Society, 1986
- Structural classification and properties of the layered oxidesPhysica B+C, 1980