A Biocompatible Supercapacitor Diode with Enhanced Rectification Capability toward Ion/Electron-Coupling Logic Operations,Advanced Materials

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A Biocompatible Supercapacitor Diode with Enhanced Rectification Capability toward Ion/Electron-Coupling Logic Operations
Advanced Materials ( IF 27.4 ) Pub Date : 2023-03-20 , DOI: 10.1002/adma.202301218
Hongyun Ma ₁ , Jie Liang ₁ , Jian Qiu ₂ , Li Jiang ₂ , Lingxiao Ma ₁ , Hongwei Sheng ₁ , Mingjiao Shao ₁ , Qi Wang ₁ , Fengfeng Li ₁ , Yujun Fu ₃ , Jing Wang ₄ , Erqing Xie ₁ , Yang Chai ₅ , Wei Lan ₁

Affiliation

The main challenge faced by the forthcoming human–computer interaction is that biological systems and electronic devices adopt two different information carriers, i.e., ions and electrons, respectively. To bridge the gap between these two systems, developing ion/electron-coupling devices for logic operation is a feasible and effective approach. Accordingly, herein a supercapacitor-based ionic diode (CAPode) that takes electrochemically amorphized molybdenum oxide as the working electrode is developed. Benefiting from its unique size and charge dual ion-sieving effects, the molybdenum oxide electrode exhibits a record-high rectification ratio of 136, which is over 10 times higher than those of reported systems. It also delivers an ultrahigh specific capacitance of 448 F g⁻¹ and an excellent cycling stability of up to 20 000 cycles, greatly outperforming those of previous works. These excellent rectification capability and electrochemical performances allow the as-built CAPode to work well in AND and OR logic gates, validating great potential in ion/electron-coupling logic operations. More attractively, the superior biocompatibilities of molybdenum oxide and relevant constituent materials enable the constructed CAPode to be applied as bioelectronics without regard to biosafety, paving a new way toward forthcoming human–computer interaction.

中文翻译：

一种具有增强离子/电子耦合逻辑操作整流能力的生物相容性超级电容二极管

即将到来的人机交互面临的主要挑战是生物系统和电子设备分别采用两种不同的信息载体，即离子和电子。为了弥补这两个系统之间的差距，开发用于逻辑运算的离子/电子耦合器件是一种可行且有效的方法。因此，本文开发了一种以电化学非晶化氧化钼作为工作电极的基于超级电容器的离子二极管（CAPode）。得益于其独特的尺寸和电荷双离子筛分效应，氧化钼电极表现出创纪录的高整流比136，比报道的系统高10倍以上。它还具有 448 F g⁻ ^{1的超高比电容}高达20000次循环的优异循环稳定性，大大优于之前的作品。这些出色的整流能力和电化学性能使内置的 CAPode 能够在 AND 和 OR 逻辑门中良好工作，从而验证了离子/电子耦合逻辑运算的巨大潜力。更有吸引力的是，氧化钼和相关组成材料优异的生物相容性使得所构建的CAPode能够在不考虑生物安全的情况下作为生物电子学应用，为即将到来的人机交互开辟了新的途径。

更新日期：2023-03-20

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