Abstract Flexible aqueous zinc-ion batteries are promising to satisfy the booming wearable electronics. Herein, a facile, scalable, and cost-effective method (one-step electrodeposition) is developed to grow MnO2 nanoflakes onto carbon nanotube (CNT) film. The binder-free self-supporting CNT@MnO2 film can take advantages of highly conductive CNT scaffold and nanostructure of MnO2, thus leading to facilitated electrochemical kinetics. Based on the CNT@MnO2 film, a flexible quasi-solid-state Zn-MnO2 battery is assembled and achieves high reversible capacity of 292.7 mAh g−1 (corresponding to 16.5 mWh cm−3) at 0.2 mA cm−2, great rate capability (105.6 mAh g−1 at 3 mA cm−2), and excellent cycling stability (no capacity fading after 1000 cycles). The quasi-solid-state Zn-MnO2 battery also shows high tolerance to mechanical bending. With these merits, the CNT@MnO2 film holds great potential for Zn-MnO2 batteries to power wearable electronics.

中文翻译：

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MnO2 纳米薄片在碳纳米管薄膜上的电沉积制备高性能柔性准固态 Zn-MnO2 电池

摘要 柔性水性锌离子电池有望满足蓬勃发展的可穿戴电子产品的需求。在此，开发了一种简便、可扩展且具有成本效益的方法（一步电沉积），以在碳纳米管 (CNT) 膜上生长 MnO2 纳米薄片。无粘合剂的自支撑 CNT@MnO2 薄膜可以利用高导电性的 CNT 支架和 MnO2 的纳米结构，从而促进电化学动力学。基于CNT@MnO2薄膜，组装了柔性准固态Zn-MnO2电池，在0.2 mA cm-2下实现了292.7 mAh g-1（相当于16.5 mWh cm-3）的高可逆容量，高倍率容量（3 mA cm-2 时为 105.6 mAh g-1）和出色的循环稳定性（1000 次循环后容量无衰减）。准固态 Zn-MnO2 电池还显示出对机械弯曲的高耐受性。有了这些功劳，