As an emerging technology for energy storage, aqueous rechargeable batteries possess several advantages including intrinsic safety, low cost, high power density, environmental friendliness, and ease of manufacture. Consequently, they hold significant application value and promising prospects in the field of large-scale energy storage, garnering extensive attention and experiencing rapid development in recent years. However, the limited voltage window poses a significant challenge for further advancements of the aqueous rechargeable batteries. Substantial progress has been made in achieving wide voltage windows (>2.0 V) and large operating voltages for aqueous rechargeable batteries. This mini-review paper presents an overview of the theoretical mechanisms governing stabilized voltage windows, providing essential guidelines for expanding the voltage range of aqueous rechargeable batteries. The strategies for constructing high-voltage aqueous rechargeable batteries are subsequently summarized and categorized into anode selection, cathode engineering, and electrolyte optimization strategies. By discussing their current research status along with associated challenges and potential solutions, we also suggest a few research directions for high-voltage aqueous rechargeable batteries.

中文翻译：

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释放高压水系可充电电池的潜力：成就和前景

作为一种新兴的储能技术，水系可充电电池具有本质安全、成本低、功率密度高、环境友好、易于制造等优点。因此，它们在大规模储能领域具有重要的应用价值和广阔的前景，近年来受到广泛关注并得到快速发展。然而，有限的电压窗口对水系可充电电池的进一步发展提出了重大挑战。在实现水系可充电电池的宽电压窗口（>2.0 V）和大工作电压方面已经取得了实质性进展。这篇小型评论文章概述了控制稳定电压窗口的理论机制，为扩大水系可充电电池的电压范围提供了重要指导。随后总结了构建高压水系可充电电池的策略，并将其分为阳极选择、阴极工程和电解质优化策略。通过讨论当前的研究现状以及相关的挑战和潜在的解决方案，我们还提出了高压水系可充电电池的一些研究方向。