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Synthesis of Novel Organic-Ligand-Doped Sodium Bis(Oxalate)-Borate Complexes with Tailored Thermal Stability and Enhanced Ion Conductivity for Sodium Ion Batteries
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Synthesis of Novel Organic-Ligand-Doped Sodium Bis(Oxalate)-Borate Complexes with Tailored Thermal Stability and Enhanced Ion Conductivity for Sodium Ion Batteries
Posted:2016-03-18 17:04    Column:2014
C. Ge, L. Wang, L. Xue, Z.-S. Wu, H. Li, Z. Gong, X.-D. Zhang*,
Journal of Power Sources 2014, 248: 77-82. 
DOI: 10.1016/j.jpowsour.2013.09.044  [PDF]

Abstract
A series of novel organic-ligand-doped sodium bis(oxalate)-borate complexes, including sodium bis[salicylato(2-)]-borate (NBSB), sodium[salicylato benzenediol]borate (NBDSB), sodium bis[oxalate]-borate (NBOB) and its derivatives NBOB(C2H2O4)0.2, NBOB(C7H4O3)0.2, NBOB(C7H4O3)0.6, NBOB(C6H6O2)0.15 and NBOB(C6H6O2)0.3fabricated by solid-state reaction are firstly developed as new-type electrolytes for sodium ion batteries. These resulting sodium boron salts possess good solubility in an abroad range of organic solvents (such as PC, AN, DMF, PC+AN, PC+DMF), tailored thermal stability from 300 to 353 C, improved ion conductivity (>1×10−3Scm−1), environmental friendliness and low cost. Therefore, we believe that these new-type sodium boron salts show great potential as a new class of electrolyte for high-performance sodium ion batteries.

Dalian Institute of Chemical Physics, CAS
457 Zhongshan Road Dalian, China 116023
E-mail: wuzs@dicp.ac.cn
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