• Alternating positively and negatively charged surface controlled by pH expedites and homogenizes Zn²⁺ flux, endowing the Zn- silk fibroin (SF) anode with low polarization voltage and stable stripping/plating.

• Experimental analyses with theoretical calculations suggest that SF coating facilitates the desolvation of [Zn(H₂O)₆]²⁺ and provides nucleation sites for uniform deposition.

• Symmetric battery of Zn–SF anodes delivers high-rate performance (up to 20 mA cm⁻²) and excellent stability (1500 h at 1 mA cm⁻²; 500 h at 10 mA cm⁻²) with cumulative capacity of 2.5 Ah cm⁻².

中文翻译：

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两性带电蛋白质基涂层调节界面可逆电场，实现高倍率和坚固的锌阳极

• 由 pH 值控制的交替带正电荷和负电荷的表面可加速和均化 Zn ²⁺通量，赋予锌丝素蛋白 (SF) 阳极低极化电压和稳定的剥离/电镀。

• 理论计算的实验分析表明，SF 涂层促进了 [Zn(H ₂ O) ₆ ] ²⁺的去溶剂化，并为均匀沉积提供了成核位点。

• Zn-SF 阳极的对称电池具有高倍率性能（高达 20 mA cm ^-2）和出色的稳定性（1 mA cm ^{-2时 1500 小时；10 mA cm -2}时 500 小时），累积容量为 2.5 Ah cm ^-2。