Aqueous zinc-ion batteries are appealing owing to their high safety and low cost; however, the low energy density hinders their wide applications. Recently in Nature Communications, Liang and coworkers reported a Zn-I₂ battery that enables a reversible four-electron I⁻/I₂/I⁺ conversion, which exhibits high voltage and capacity, high energy density, and excellent cycling performance.

中文翻译：

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扩展碘化学：走向高能量密度的水性锌离子电池

水系锌离子电池因其安全性高、成本低而备受青睐；然而，低能量密度阻碍了它们的广泛应用。最近在Nature Communications 上，Liang 及其同事报道了一种 Zn-I ₂电池，该电池能够实现可逆的四电子 I ^- /I ₂ /I ⁺转换，具有高电压和容量、高能量密度和优异的循环性能。