本計劃主軸議題在探討新型能源材料中能源參數間的互動關係，了解物理特性後，開發應用設計所應著重之處，利用中子散射、中子繞射、X光繞射、磁化率、磁矩、電阻率、比熱等量測，探究材料中磁與電的互動關係，對系統作完整的探討。本計畫擬探討三個議題，各主題均已有初步成果，顯示系統及實驗方法可行，並值得深入探討：（1）熱電材料SnSe的特異聲子能譜與低熱導率(thermal conductivity)的關係，此議題與中研院合作，主要採用中子非彈性散射探討結構項轉變溫區及高溫Cmcm項，聲子能譜色散(energy dispersion)、聲子壽命(lifetime)、聲子傳遞長度(propagation length)；（2）第二類多鐵材料Co3TeO6中磁與電的互動，此議題與中山大學合作，延續已完成的磁與電項轉變探討後，本計畫開始探討磁子 (magnon)，將聚焦在反鐵電有序後，對對磁子色散的影響，採用中子非彈性散射配合比熱及磁矩實驗；（3）奈米化新穎二次納電池材料開發及充放電行為探討，此議題與佛羅里達大學合作，繼續發展奈米化核殼多層普魯士藍NaCu[Co(CN)6]為陰極材料，新穎主題聚焦在開發奈米磁粒子對保存電池電力的可行性。 ;n this proposal we focus on investigate the interplay between magnetic and electric parameters in the new energy materials. The physical properties will be studied by inelastic neutron scattering, neutron diffraction, x-ray diffraction, resistivity, magnetic susceptibility, specific heat measurements. Special attention will be focus on the interplay between the electric polarization and magnetic polarization. Topics proposed to be studied include (1) thermoelectric material SnSe: by measuring the phonon dispersion, lifetime, paragation length for the origion of low thermal conductivity; (2) type-II multiferroic materials Co3TeO6: effects of development of antiferroelectricity on the magnon dispersion; (3) nano-sized Prussian Blue Analogue (PBA): development of Li+-PBA and Na+-PBA secondary battery and enhancing the electric cycleability by the proximity of magnetic Ni nanoparticles by PBA nanoparticles.
