Stacked porous tin phosphate nanodisk anodes

Abstract

Stacked porous octahedral tin phosphate Sn₂P₂O₇ nanodisks, with a thickness and a width of 20 nm and 200 nm, respectively, were prepared from quenching hydrothermally prepared (SnHPO₄)₂·H₂O at 600 °C. The first discharge capacity was 600 mA h g⁻¹ while the capacity retention, even after 220 cycles, was 93%.