This Minireview examines the operational lifetime of light-emitting electrochemical cells (LECs). Under continuous operation, both polymer-based LECs (PLECs) and ionic transition-metal complex (iTMC)-based LECs (iTMC-LECs) now exhibit a luminance half-life exceeding 1000 h. This improved performance was accomplished with several effective strategies aimed at optimizing the operating scheme, the material composition, and the device architecture. These strategies are presented in detail with PLECs as an example. iTMC-LECs are also highlighted owing to their excellent stress stability with regards to both luminance and operating voltage. The survey of literature data points to clear trends, as well as some unexpected results in LECs stressed for an extended period. Major challenges still exist, but long-lasting LECs are possible when the proven strategies are combined with innovative materials and device design.

中文翻译：

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长寿命发光电化学电池的策略。

该Minireview考察了发光电化学电池（LEC）的使用寿命。在连续运行下，基于聚合物的LEC（PLEC）和基于离子过渡金属络合物（iTMC）的LEC（iTMC-LEC）现在都显示出超过1000小时的亮度半衰期。通过几种旨在优化操作方案，材料成分和器件架构的有效策略，可以实现性能的提高。以PLEC为例详细介绍了这些策略。由于iTMC-LEC在亮度和工作电压方面都具有出色的应力稳定性，因此也得到了强调。对文献数据的调查指出了趋势的明显变化，以及长期处于紧张状态的LEC的一些意外结果。主要挑战仍然存在，