Relevant fundamentals of the electrochemical double layer and supercapacitors utilizing the interfacial capacitance as well as superficial redox processes at the electrode/solution interface are briefly reviewed. Experimental methods for the determination of the capacity of electrochemical double layers, of charge storage electrode materials for supercapacitors, and of supercapacitors are discussed and compared. Intrinsic limitations and pitfalls are indicated; popular errors, misconceptions, and mistakes are evaluated. The suitability of available methods is discussed, and practical recommendations are provided.

中文翻译：

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如何测量和报告电化学双层，超级电容器及其电极材料的容量

简要回顾了电化学双层和超级电容器在电极/溶液界面处利用界面电容以及表面氧化还原过程的相关基础知识。讨论并比较了测定电化学双层容量，超级电容器的电荷存储电极材料和超级电容器的实验方法。指出了固有的局限性和陷阱；评估常见的错误，误解和错误。讨论了可用方法的适用性，并提供了实用建议。