Despite intensive research in the development of lithium-metal batteries, combining high energy density and long cycle life is still a great challenge. Now, a deeper understanding of the degradation mechanisms at play in realistic cells may pave the way for practical applications of these batteries.

中文翻译：

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找到正确的平衡点

尽管对锂金属电池的开发进行了深入研究，但将高能量密度和长循环寿命结合起来仍然是一个巨大的挑战。现在，更深入地了解实际电池中的降解机制可能为这些电池的实际应用铺平道路。