Hydrothermal Synthesis and Electrochemical Property of Self-Assembly K10[H2W12O42]⋅10H2O Nanorod

Abstract

Using KOH and WO3 as raw materials, K10[H2W12O42][Formula: see text][Formula: see text][Formula: see text]10H2O nanorod was successfully synthesized via controlling the pH value and the K/W mole ratio of hydrothermal system. The structure and morphology of the samples were characterized by XRD, SEM, TEM, HRTEM and selected area electron diffraction (SAED). The size of K10[H2W12O42][Formula: see text][Formula: see text][Formula: see text]10H2O nanorod was about 300[Formula: see text]nm in width and 3–10[Formula: see text][Formula: see text]m in length. The nanorod consisted of self-assembly nanowires with about 10[Formula: see text]nm in width. Moreover, the electrochemical performance of K10[H2W12O42][Formula: see text][Formula: see text][Formula: see text]10H2O as anode material was investigated, indicating that the as-prepared sample electrode possessed a certain ability of lithium ion insertion/extraction, and exhibited a high initial discharge capacity of 310[Formula: see text]mAh g[Formula: see text].