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科技日报上海1月10日电(记者王春)由中科院上海硅酸盐研究所、武汉理工大学组成的团队,围绕电热输运协同调控、热电材料的多尺度微结构设计和高性能热电材料开展研发,项目成果今天获得2013年度国家自然科学二等奖。科研团队发现了笼状结构方钴矿晶格孔洞填充机理,首次提出填充原子与基体元素形成的第二相与填充方钴矿相(IyCoSb3)的竞争决定填充量极限;建立了预测杂质原子填充量极限的模型,揭示了杂质原子填充量与它的化学价态及电负性等元素本征性质间的定量关系,发现了填充原子与Sb元素之间的电负性差必须大于0.8的填充方钴矿稳定存在的电负性选择规则,解释了已发现和报道的填充方钴
Science and Technology Daily Shanghai, January 10 (Reporter Wang Chun) A team of scientists from Shanghai Institute of Ceramics, Chinese Academy of Sciences and Wuhan University of Technology conducted a multi-scale micro-structure design and high-performance thermoelectric materials for thermoelectric materials around the coordinated control of electric heat transfer Research and development, project achievements today won the 2013 National Natural Science Award. The research team found that the cage-like cubic cobaltite lattice cavity filling mechanism, for the first time put forward by the filling atoms and matrix elements of the second phase and filled side cobaltite phase (IyCoSb3) competitive decision fill limit; established predictive impurity atomic filling The quantitative model reveals the quantitative relationship between the atomic charge of impurities and the intrinsic valence of its chemical valence and electronegativity. It is found that the difference of the electronegativity between the filled atom and the Sb element must be greater than 0.8 The electronegativity selection rule for the stable presence of cobalt ore explains what has been reported and reported as filling cobalt