A high yield preparation method for prussian blue (PB) by using perchlorate precursors was explored. The influence of compositions of the precursor solution, preparation temperature, sodium salt addition and impurities in the final products on the electrochemical properties of final PB products were investigated. The results showed that the existence of impurities lead to a slight decrease of specific capacity. For PB material prepared using FeCl2 precursor, electrochemical performance of the unwashed sample was obvious inferior to that of the washed sample due to the existence of NaCl impurity. On the other hand, for the PB material prepared by using Fe(ClO4)2 precursor, initial discharge capacity of PB product without being clean washed was slightly lower than being washed but showed better cycling stability due to the existence of small amount of NaClO4 impurity. The unwash synthesis route leads to a high yield of PB product.
Liqi SUN Xiaomin YAN Wan TANG Yushi HE Zifeng MA Xiaozhen LIAO
. High yield synthesis process and performance of prussian blue cathode materials for sodium ion batteries[J]. The Chinese Journal of Process Engineering, 2018
, 18(4)
: 809
-814
.
DOI: 10.12034/j.issn.1009-606X.217403
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