Design of High Capacity Dissoluble Electrodes for All Transient Batteries
Design of High Capacity Dissoluble Electrodes for All Transient Batteries
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DOI：
10.1002/adfm.201605724
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发表时间：
2017-03-17
影响因子：
19
通讯作者：
Hu, Liangbing
中科院分区：
文献类型：
--
作者：
Wang, Zhengyang;Fu, Kun (Kelvin);Hu, Liangbing
瞬态电子学是一个新兴的工程领域，它要求材料、器件和系统设计在常规操作中具有优异和稳定的性能，但是一旦被外部刺激触发，就以受控的速率在规定的时间内物理和化学地消失，不留下或留下最少的残留物。本文设计了一种基于掺锡钒氧化物（V2 O 5）的高能量密度可充电池。制备了具有12 mg cm（-2）的高质量负载的Sn掺杂的V2 O 5纳米纤维，并且不添加导电添加剂或粘合剂来制造全电池。该瞬态电池在高于2.0V的工作电压下表现出2 mAh cm（-2）的面积容量，并且在高达17.76mA cm（-2）的电流下提供0.27mAh cm（-2）的容量。一旦被氢氧化钾（KOH）水溶液触发，全电池可以在几分钟内完全溶解到溶液中，以实现高瞬态能力。该工作为实现瞬态电子应用中的高面积容量全瞬态锂电池提供了一种新方法。
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.