热力学能量校正

  • 气相分子自由能校正:vaspkit输出
    1. Zero-point energy $ε_{ZPE}$;
    2. Thermal correction to U(T), = $\varepsilon{\mathrm{ZPE}}++\Delta U{0 \rightarrow T}$
    3. Thermal correction to H(T), = $\varepsilon{\mathrm{ZPE}}++\Delta U{0 \rightarrow T}+PV=+PV=\varepsilon{\mathrm{ZPE}}++\Delta H{0 \rightarrow T}$
    4. Thermal correction to G(T), = $\varepsilon{\mathrm{ZPE}}++\Delta U{0 \rightarrow T}+PV+TS=+PV+TS=\varepsilon{\mathrm{ZPE}}++\Delta G{0 \rightarrow T}$
  • 以$\ce{O2}$分子为例:
    • 做频率计算,核算虚频
    • 相同文件夹,运行vaspkit 502 输入温度与压力和自旋多重度
  • 吸附分子自由能校正:vaspkit输出
    1. Zero-point energy $ε_{ZPE}$;
    2. Thermal correction to U(T) = H(T) = $\varepsilon{\mathrm{ZPE}}++\Delta U{0 \rightarrow T}$
    3. Thermal correction to G(T) = $\varepsilon{\mathrm{ZPE}}++\Delta U{0 \rightarrow T}+TS=+TS=\varepsilon{\mathrm{ZPE}}++\Delta G{0 \rightarrow T}$
  • 以Au(111)面上吸附的O为例:
    • 固定所有slab原子,做频率计算,grep cm OUTCAR
    • 相同文件夹运行501,输入温度

results matching ""

    No results matching ""