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Alkali Transition Metal Phosphites as Potential Cathode Materials Grown from Molten Boric Acid
Author(s) -
Huang HuiLin,
Huang ShuHao,
Lai ChunWei,
Wu JiaRong,
Lii KwangHwa,
Wang SueLein
Publication year - 2013
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201200600
Subject(s) - chemistry , boric acid , alkali metal , cathode , transition metal , inorganic chemistry , metal , valence (chemistry) , sulfur , organic chemistry , catalysis
This is the first study on developing six alkali transition metal phosphites as potential candidates of cathode materials grown from molten boric acid, a simple, low energy costing method compared with conventional solid‐state reactions. Li 2 [Mn(HPO 3 ) 2 ] ( 1 ) and Li[V(HPO 3 ) 2 ] ( 2 ) are featured with high theoretical capacitance values up to 117 and 123 mAh/g, respectively. With the replacement of Li + by Na + or K + , four new compounds with strongly related layer topology Na 2 [Co 4 (HPO 3 ) 5 ] ( 3 ), K 2 [Co 3 (HPO 3 ) 4 ] ( 4 ), K 2 [Mn 2 (HPO 3 ) 3 ] ( 5 ), and K[V(HPO 3 ) 2 ] ( 6 ) were prepared. The synthesis mediated by molten boric acid automatically provides reductive atmosphere and helps maintain low valence in metal centers.