In a biomimetic iontronic electrochemical system, the interior ions can move accompanied by surrounding charges, and then facilitating the integral carrier transfer, yet their transfers are still restricted by concentration gradient and temperature. Here, an ordered porous bismuthene electrode is designed, composed by bismuthene, bismuthene-derived Bi2O3&BiOCl, and borophene materials, with supercapacitive 4.96 F g−1 attribute retaining 89.6 % after 29,600 cycles, and the dispersive bismuthene nanosheets are also embedded into regenerated silk fibroin as elastic electrolyte. The resultant symmetrical iontronic pressure sensor shows high sensitivity of 2.31 kPa−1 in a wide 0.2–10 kPa range, and 0.41 kPa−1 sensitivity ranging 10–48 kPa, fast response/recovery time of 60/50 ms, and low detection limit of 0.45 Pa. The simulation and mechanism analysis demonstrate that a field emission effect plays an important role in electrolyte, in which the ions around the ordered bismuthene as emitters are launched and moved along the inner bismuthene nanosheets, step by step, to enormously shorten the ions migration path and effectively accelerate ion-charge pair transfer. Compared to the device without bismuthene in electrolyte, the sensitivity of sensor is improved by 23.81 times with high reproducibility over 1000 cycles. Additionally, the poly (3, 4-ethylenedioxythiophene): poly (styrene sulfonate) in electrolyte effectively constrains the movements of polymer molecules, contributing to high temperature adaptability from −15 to 70 ℃. In practical application, a tiny pressure monitoring in hot/cold perception is demonstrated, revealing a promising application in wearable systems and intelligent robotics.

中文翻译：

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高热适应性超电容离子电子皮肤有序铋电极的电化学场发射效应


在仿生离子电子电化学系统中，内部离子可以伴随周围电荷移动，从而促进整体载流子转移，但它们的转移仍然受到浓度梯度和温度的限制。这里，设计了一种有序多孔铋电极，由铋、铋衍生的Bi2O3&BiOCl和硼烯材料组成，在29,600次循环后超电容4.96 F g−1属性保留89.6%，并且分散的铋纳米片也嵌入到再生丝素蛋白中作为弹性电解质。由此产生的对称离子电子压力传感器在 0.2–10 kPa 范围内表现出 2.31 kPa−1 的高灵敏度，在 10–48 kPa 范围内表现出 0.41 kPa−1 的灵敏度，60/50 ms 的快速响应/恢复时间和低检测限模拟和机理分析表明，场发射效应在电解质中发挥着重要作用，其中有序铋烯周围的离子作为发射体被发射并沿着内部铋烯纳米片逐步移动，从而极大地缩短了电解质的寿命。离子迁移路径并有效加速离子-电荷对转移。与电解液中不含铋的装置相比，传感器的灵敏度提高了23.81倍，且1000次循环以上的重复性很高。此外，电解液中的聚(3,4-乙撑二氧噻吩)：聚苯乙烯磺酸盐有效限制了聚合物分子的运动，有助于提高-15至70℃的高温适应性。在实际应用中，展示了热/冷感知中的微小压力监测，揭示了在可穿戴系统和智能机器人中的有前景的应用。