Главная – Журналы – Химия в интересах устойчивого развития 36 номер 2

M₃H(SO₄)₂ (M = Na, K, Rb) crystals, which are known to undergo superprotonic phase transition in the case of M = K and Rb, were prepared via mechanochemical process from equimolar M₂SO₄ and MHSO₄. The phase transitions of M₃H(SO₄)₂ prepared by mechanical milling using a high energy ball mill apparatus were confirmed from DTA-TG and conductivity measurements, although the phase transition temperatures were slightly lower than that of M₃H(SO₄)₂ prepared via solution process. The Rb₃H(SO₄)₂ prepared by mechanical milling showed reproducible ionic conductivity of 1×10^-3 S/cm at 230 ^oC under dry N₂ atmosphere.