期刊
MRS COMMUNICATIONS
卷 3, 期 3, 页码 129-133出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1557/mrc.2013.26
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资金
- Revolutionary Materials for Solid State Energy Conversion, an Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001054]
Tetrahedrite-structure compounds, of general composition Cu12-xZnxSb4S13, are an earth-abundant alternative to PbTe for thermoelectric power generation applications in the intermediate high-temperature range (300-400 degrees C). Tetrahedrites can be synthesized in the laboratory using a multi-step process involving long annealing times. However, this compound also exists in natural mineral form, and, in fact, is one of the most abundant copper-bearing minerals in the world. We show here that by simply mixing natural mineral tetrahedrite with pure elements through high-energy ball milling without any further heat treatment, we can successfully obtain material with figure of merit near unity at 723 K.
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