The Cover Feature demonstrates the importance of differentiation between several degradation phenomena that appear in lab‐scale accelerated stress tests for oxygen evolution reaction (OER) materials. The provided insights are essential for interpretation of electrochemical degradation results and eventually for identifying best catalysts. More information can be found in the Communication by Geiger et al. on page 4140 in Issue 21, 2017 (DOI: 10.1002/cssc.201701523).

中文翻译：

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封面人物：析氧反应的催化剂稳定性基准：加速老化研究中背电极材料的重要性和溶解性（ChemSusChem 21/2017）

封面功能展示了区分氧气降解反应（OER）材料的实验室规模加速应力测试中出现的几种降解现象的重要性。所提供的见解对于解释电化学降解结果以及最终确定最佳催化剂至关重要。有关更多信息，请参见Geiger等人的《通讯》。就在问题21，2017年4140页（：10.1002 / cssc.201701523 DOI）。