Auricularia-like V2O5 anchored on NiTi alloy wire for quasi-solid-state fibrous zinc-ion batteries with shape memory function

With the continuous development of flexible wearable devices, the integration of zinc-ion batteries with shape memory function is of substantial importance for the next generation of wearable electronic devices. Herein, a novel quasi-solid-state fibrous shape memory zinc-ion battery (SMZIB) has been fabricated by using auricularialike V2O5 anchored on NiTi alloy wire as the cathode and zinc wire as the anode. It is worth noting that the SMZIB can be used as a flexible energy storage device with good shape memory ability, which can be restored to the initial design shape upon heating at approximately 50 degrees C after deformation. Furthermore, the SMZIB device retains 90.7% of its initial capacity after 200 shape-recovery cycles and has a capacity retention of 95.8% after 1000 charge-discharge cycles, demonstrating good cycling stability.