Aqueous full cell based on non-metal NH₄⁺ ions redox reactions has been reported recently owing to NH₄⁺ ions as charge carriers with advantages of abundant resources, light weight, eco-friendly and fast diffusion capability. However, the exploration of NH₄-ions full cell is still in its infancy. Despite the aforementioned unique properties of the aqueous NH₄-ions full cell, there is almost no reported about the flexible NH₄-ions full cell so far. Developing novel electrodes with highly reversible NH₄-ions accommodation capability underlies the construction of high-performance full cells. Here, we first demonstrate a novel flexible aqueous ammonium-ion full cell with high rate capability and long cycle life consisted of urchin-like NH₄V₄O₁₀ coated on carbon fiber cathodes and polyaniline nanorods grown on carbon fiber anodes in (NH₄)₂SO₄ aqueous solution. A high specific capacity up to 167 mA h g⁻¹ at a current density of 0.1 A g⁻¹, excellent rate capability with a specific capacity of 54 mA h g⁻¹ at 1 A g⁻¹ and an ultralong cycle life with a high capacity retention are achieved. Meanwhile, the NH₄-ion full cell shows good flexibility with well-maintained electrochemical performances at different deformation states. This work may shed a light to develop flexible aqueous NH₄-ion cells.

基于NH ₄ ⁺离子作为电荷载体，具有资源丰富，重量轻，生态友好和扩散能力强的优点，最近已经报道了基于非金属NH ₄ ⁺离子氧化还原反应的水性全电池。然而，对NH ₄离子全细胞的探索仍处于起步阶段。尽管水性NH _4-离子全电池具有上述独特的性能，但到目前为止，几乎没有关于柔性NH _4-离子全电池的报道。开发具有高度可逆NH _4的新型电极离子容纳能力是高性能全电池构建的基础。在这里，我们首先展示一种新型的柔性铵水溶液，具有高倍率能力和长循环寿命，它由涂覆在碳纤维阴极上的类顽固型NH ₄ V ₄ O ₁₀和在（NH ₄）₂ SO ₄水溶液。在电流密度为0.1 A g ^-1时具有高达167 mA hg ^-1的高比容量，在1 A g ^-1时具有54 mA hg ^-1的比容量的优异倍率能力并实现了超长循环寿命和高容量保持率。同时，NH ₄离子全电池在不同的变形状态下具有良好的柔韧性和良好的电化学性能。这项工作可能会为开发柔性NH ₄离子水性电池提供启示。