Solution‐Processable Design of Fiber‐Shaped Wearable Zn//Ni(OH)2 Battery. Issue 12 (24th October 2018) - Chen, Ruyi
Abstract: The rising of flexible and potable electronics urgently calls for matchable and miniaturized energy storage system as power supply. Herein, we develop a solution‐processable method to fabricate Ni@Ni(OH)2 fiber to design an all‐solid‐state fiber‐shaped Zn//Ni(OH)2 battery. This battery exhibits a high open circuit voltage of 1.75 V which is close to the theoretical value, considerable discharge capacity of 704 μAh cm −3 at current density of 0.5 A g −1, good rate capability with 75 % capacity retention when the discharge current increases from 0.5 A g −1 to 5 A g −1 and good cycling stability (92 % capacity retention after 2000 charge‐discharge cycles). Furthermore, the device performance remains unchanged under bending conditions, showing good flexibility and stability. It is believed that our design provides a promising strategy to fabricate long fiber‐shaped Zn//Ni(OH)2 battery as power supply for wearable electronics in future practical applications. Abstract : A novel all‐solid‐state fiber‐shaped Zn//Ni(OH)2 battery has been fabricated by a solution‐processable method. This battery exhibits considerable discharge capacity, good rate capability and outstanding cycling stability. Furthermore, the device performance almost remains unchanged under different bending conditions, illustrating good flexibility. Our design provides a promising strategy for wearable electronics in future practical applications.