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6. For the design of battery materials, the temperature-dependent macroscopic properties (such as transport coefficient) can be connected with the configurational degrees of freedom associated with all possible ways of distributing alkali ions (e.g. Li ions) and vacancies over the interstitial sites of the host material. Suggest a method, citing the key equation to develop such relationships. Write the expression for Helmholtz free energy. 6. For the design of battery materials, the temperature-dependent macroscopic properties (such as transport coefficient) can be connected with the configurational degrees of freedom associated with all possible ways of distributing alkali ions (e.g. Li ions) and vacancies over the interstitial sites of the host material. Suggest a method, citing the key equation to develop such relationships. Write the expression for Helmholtz free energy