BaZrS3 block thermoelectric material with perovskite structure and preparation method thereof

Abstract

The invention is suitable for the field of thermoelectric materials, and provides a perovskite structure BaZrS3 block thermoelectric material and a preparation method thereof, and raw materials for preparing the BaZrS3 block thermoelectric material comprise BaCO3, ZrO2 and CS2. According to the method, rapid batch preparation of BaZrS3 blocks can be achieved, the synthesis efficiency is improved, the prepared BaZrS3 material is high in density, the density is close to the theoretical density, the thermoelectric performance is good, the thermoelectric performance is stable in the temperature range from the room temperature to 300 DEG C, and a good foundation is provided for further optimization of the subsequent thermoelectric performance. According to the invention, the variety of the existing thermoelectric material system is widened, and a new way is provided for realizing thermoelectric energy conversion.

Description

technical field [0001] The invention belongs to the field of thermoelectric materials, in particular to a perovskite structure BaZrS 3 Bulk thermoelectric material and preparation method thereof. Background technique [0002] At present, the problems of energy shortage and environmental pollution on a global scale are becoming increasingly prominent. Energy security has become an important basis for national security. The development of new energy and environmentally friendly energy conversion technologies has become a research topic that countries attach great importance to. Thermoelectric materials can directly realize the mutual conversion between thermal energy and electrical energy, and can be used in thermal power generation and solid-state refrigeration. They have the advantages of no wear, no vibration, no noise, no leakage, and no maintenance. It has important applications in the field of information. From the research status of thermoelectric materials, the tradi...

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Problems solved by technology

[0004]BaZrS3 is a perovskite material with high chemical stability, which has important applications in optoelectronic devices and can solve the current calcium Problems such as poor stability, toxicity, and unsuitable bandgap width of titanium ore thin films

At present, the research on BaZrS3 materials is mainly based on photoelectric thin films, and there is no research report on the thermoelectric properties of bulk materials.

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