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从电化学势和热力学第二定律的关系入手,导出了基于电化学势的电化学过程方向判据,即从热力学第二定律的高度对电化学势判据进行了再认识,避免了直接把热力学第二定律Gibbs判据中的化学势改为电化学势却仍然沿用相同的使用条件去说明问题的错误做法,澄清了电化学系统只有可逆过程而无平衡状态的错误概念,并在此基础上对相关的电化学问题进行了讨论,说明了电化学势概念在电化学基础理论中的重要性。
Starting from the relationship between the electrochemical potential and the second law of thermodynamics, the criterion of electrochemical process based on electrochemical potential is deduced, that is, the electrochemical potential criterion is re-recognized from the height of the second law of thermodynamics, The second law of thermodynamics The chemical potential in the Gibbs criterion is changed to the electrochemical potential but still uses the same conditions of use to illustrate the wrong way to solve the problem. It clarifies the erroneous concept that the electrochemical system has only a reversible process without equilibrium, The related electrochemical problems were discussed, illustrating the importance of the concept of electrochemical potential in the basic electrochemical theory.