A kind of nano-rod vanadium tetrasulfide powder and its preparation method and application

Abstract

The invention discloses a preparation method of nanorod-shaped vanadium tetrasulfide powder, which comprises the following steps: (1) dissolving thioacetamide into absolute ethanol and stirring until completely dissolved to obtain mixture A; (2) dissolving vanadium tetrasulfide Add ammonium acid to mixture A, stir until completely dissolved to obtain mixture B; (3) drop dilute hydrochloric acid into mixture B under stirring conditions to form a transparent solution to obtain mixture C; (4) transfer mixture C to hydrothermal In the reaction kettle, conduct hydrothermal reaction for 24-25 hours; (5) naturally cool after the reaction, centrifuge and wash several times, and vacuum-dry to obtain nanorod-shaped vanadium tetrasulfide powder. The nanorod vanadium tetrasulfide prepared by the invention has high specific capacity, excellent cycle stability, long service life and high conductivity.

Description

technical field

[0001] The invention relates to the field of battery materials, in particular to a nano-rod-shaped vanadium tetrasulfide powder and a preparation method and application thereof. Background technique

[0002] At present, the main problem faced by ion batteries is still the exploration and design of high-performance anode materials.

[0003] Graphite is widely used as anode material in ion batteries, but the actual specific capacity of graphite anode material is relatively low, which is difficult to meet people's growing demand for energy storage.

[0004] In order to find suitable anode materials for ion batteries, related researchers have extensively explored a number of compounds. Among these anode materials, researchers generally believe that metal sulfides with high theoretical capacity are a very promising class of candidates, and tuning their nanostructures is a very important way to further improve their electrochemical performance. Strategy. [0005...

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