A series of chitosan (CS)-konjac glucomannan (KGM) foams with excellent thermal insulation property has been prepared using a directional freezing method, which exhibit high strain recovery, excellent piezoelectric generation and sensing properties. Layered lamellar or honeycomb morphologies in CS-KGM foams attributes a low thermal conductivity coefficient of ca. 0.03 W/(m·K). Bridge-like structure that mainly observed in CS-KGM foams from horizontal freezing endows them with excellent compression recovery performance even after 200 compression cycles. This along with piezoelectricity of CS contributes a long-lasting piezoelectric generation performance, ranging from 0.809 to 2.460 V during compression cycle process. Piezoelectric signals generated from pressing with certain strain and rate, finger taping and hand grasping can be sensed profoundly by CS-KGM. As thus, fully renewable source-based CS-KGM foams with outstanding thermal insulation and piezoelectric performance shows great potential in application as wearable thermal insulation and piezoelectric devices.

采用定向冷冻法制备了一系列具有优异隔热性能的壳聚糖（CS）-魔芋葡甘聚糖（KGM）泡沫，具有高应变恢复、优异的压电发电和传感性能。CS-KGM 泡沫属性中的层状层状或蜂窝状形态s低导热系数约。0.03 W/(m·K)。主要在水平冷冻的 CS-KGM 泡沫中观察到的桥状结构使它们即使在 200 次压缩循环后仍具有出色的压缩恢复性能。这与 CS 的压电性一起提供了持久的压电发电性能，在压缩循环过程中的电压范围为 0.809 至 2.460 V。CS-KGM可以深刻地感知以一定的应变和速率按压、手指敲击和手抓产生的压电信号。因此，基于完全可再生资源的 CS-KGM 泡沫具有出色的隔热和压电性能，在可穿戴隔热和压电设备的应用中显示出巨大的潜力。