The quest for cost‐effective and TWh‐scale stationary energy storage systems has caused a surge of research on novel post‐Li‐ion batteries that consist solely of abundant chemical elements. Nonaqueous Al batteries, inter alia, are appealing as an inexpensive electrochemical technology owing to the high natural abundance of aluminum. A critical assessment of the literature on Al batteries, however, points to numerous misconceptions in this field. The latter is primarily linked to the false assessment of the charge storage redox reactions occurring upon cycling of Al batteries. To ensure the constructive progress of Al batteries, in this essay, the current scientific understanding of the operational mechanisms of two commonly studied Al battery systems, Al‐ion and Al dual‐ion batteries are summarized. Furthermore, the main pitfalls in interpretation and reporting of the electrochemical performance of Al cathode materials and cell‐level energy densities of Al batteries are clarified along with core challenges currently limiting their development. Toward this end, the subject of the charge storage balancing of Al dual‐ion batteries is discussed.

中文翻译：

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铝离子和铝双离子电池非水电化学中的陷阱

对具有成本效益和TWh规模的固定式储能系统的需求引起了对新型后锂离子电池的研究热潮，这种新型锂离子电池仅由丰富的化学元素组成。由于铝的自然丰度高，因此非水Al电池作为便宜的电化学技术而吸引人。然而，对有关铝电池的文献的批评性评估指出了在该领域的许多误解。后者主要与对铝电池循环时发生的电荷存储氧化还原反应的错误评估有关。为了确保铝电池的建设性进展，在本文中，总结了对两个常用的铝电池系统Al-ion和Al双离子电池的运行机理的当前科学理解。此外，阐明和解释了铝阴极材料的电化学性能和铝电池的电池级能量密度方面的主要缺陷，以及目前限制其发展的核心挑战。为此，讨论了铝双离子电池电荷存储平衡的主题。