School of Physics & Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, 430074, P. R. China.
Adv Mater. 2022 Oct;34(40):e2205369. doi: 10.1002/adma.202205369. Epub 2022 Sep 1.
Accurate and continuous pressure signal detection without external power supply is a key technology to realize the miniaturization of wearable electronic equipment, the internet of things, and artificial intelligence. However, it is difficult to be achieved by using current sensor technologies. Here, a new one-body strategy, i.e., zinc-ion battery pressure (ZIB-P) sensor technology, which designs the rechargeable solid-state ZIB itself as a flexible pressure sensor is reported. In the device, an isolation layer is introduced into the sandwich configuration solid-state battery to realize the change of device internal resistance by pressure during the transformation of the mechanical signal to the electrical signal. This battery pressure sensor possesses good flexibility, fast response/recovery time (76.0/88.0 ms), stable long-term response, excellent cycle stability (100 000 times), and wide pressure detection range (2.0 to 3.68 × 10 Pa). Especially, the excellent charge-discharge performance in the ZIB-P sensor endows it with the real-time detection ability of human vital signs (pulse, limb movement, etc.) and ultrahigh stability without degradation even under 100 000 times pressure stimulation. The ZIB-P sensor strategy provides a new solution for the future development of miniaturized wearable electronic devices.
准确且连续的压力信号检测而无需外部电源是实现可穿戴电子设备、物联网和人工智能的小型化的关键技术。然而，这很难通过使用当前的传感器技术来实现。在这里，报告了一种新的整体策略，即锌离子电池压力（ZIB-P）传感器技术，该技术将可充电的固态 ZIB 本身设计为柔性压力传感器。在该器件中，在夹层结构的固态电池中引入了隔离层，以在机械信号转换为电信号的过程中通过压力实现器件内阻的变化。这种电池压力传感器具有良好的柔韧性、快速的响应/恢复时间（76.0/88.0 ms）、稳定的长期响应、优异的循环稳定性（100000 次）和较宽的压力检测范围（2.0 至 3.68×10 Pa）。特别是，ZIB-P 传感器中的出色的充放电性能使其具有实时检测人体生命体征（脉搏、肢体运动等）的能力，并且即使在 100000 次压力刺激下也具有超高的稳定性，不会出现降解。ZIB-P 传感器策略为未来小型化可穿戴电子设备的发展提供了新的解决方案。
