Work

Nanostructured oxide materials and modules for high-temperature power generation from waste heat

Year: 2013

Type: article

Abstract: A large amount of thermal energy emitted from many industrial processes is available as waste heat. Thermoelectric (TE) power generators that convert heat directly into electricity can offer a very promising means of waste heat recovery. However, the requirements for this task place in the materials are not easily satisfied by conventional TE materials. Not only must they possess a sufficient TE performance, but they should also be stable at high temperatures, nontoxic and have low-cost comprising elements, and must be also able to be processed and shaped cheaply. Oxides are among the strongest candidate materials for this purpose. In this review, the progress in the development of two representative p- and n-type novel oxide materials based on Ca 3 Co 4 O 9 and doped-ZnO is presented. TE modules built up from these oxides were fabricated, tested at high temperatures, and compared with other similar oxide modules reported in the literature. A maximum power density of 45.3 mW cm −2 was obtained for an oxide module comprising eight p–n couples at a temperature difference of 496 K, an encouraging result in the context of the present high-temperature oxide modules.

Source: Advances in Natural Sciences Nanoscience and Nanotechnology

DOI: 10.1088/2043-6262/4/2/023002

Authors: Nong Ngo Van, Nini Pryds

Institution: Technical University of Denmark

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $1,875