Design of High Capacity Dissoluble Electrodes for All Transient Batteries

作者：Wang Zhengyang; Fu Kun; Liu Zhen; Yao Yonggang; Dai Jiaqi; Wang Yibo; Liu Boyang; Hu Liangbing^*

来源：Advanced Functional Materials, 2017, 27(11): 1605724.

DOI：10.1002/adfm.201605724

Transient electronics is an emerging engineering realm that requires materials, devices, and systematic designs with excellent and stable performance in regular operations, but to physically and chemically disappear at a prescribed time with controlled rates once being triggered by external stimulus, leaving no or minimum remnants. In this article, a high energy density rechargeable battery with a fully transient cathode based on tin (Sn)-doped vanadium oxide (V2O5) is designed. Sn-doped V2O5 nanofibers with a high mass loading of 12 mg cm(-2) are prepared and no conducting additive or binder is added to fabricate full cells. The transient battery exhibits an areal capacity of 2 mAh cm(-2) with a working voltage above 2.0 V and provides 0.27 mAh cm(-2) capacity at a current as high as 17.76 mA cm(-2). Once triggered by potassium hydroxide (KOH) aqueous solution, the full cell can be completely dissolved into the solution within a few minutes to achieve highly transient capability. This work provides a new approach to achieve an all-transient lithium battery with high areal capacity for transient electronics applications.

• 出版日期2017-3-17