No abstract

No abstract

There are many studies about integrating supercapacitors to meet actual application needs, but challenges remain in assembling the device without a current collector and other additions.

No abstract

No abstract

No abstract

With the development of various gel‐based flexible sensors, novel gels with multiple integrated and efficient properties, particularly recyclability, have been developed. Herein, a starch‐based ADM (Amylopectin (AP)‐poly 3‐[Dimethyl‐[2‐(2‐methylprop‐2‐ enoyloxy)ethyl]azaniumyl]propane‐1‐sulfonate (PDMAPS)‐MXene) gel is prepared by a facile “cooking” strategy accompanying the gelatinization of AP and polymerization reaction of zwitterionic monomers. Reversible crosslinking in the gel occurs through hydrogen bonding and electrostatic interactions. The ADM gel exhibits high stretchability (∼2700%, after one month), swift self‐healing performance, self‐adhesive properties, favorable freezing resistance, and satisfactory moisturizing properties (≥30 d). Interestingly, ADM gel can be recycled and reused by a “kneading” method and “dissolution‐dialysis” process, respectively. Furthermore, the ADM gel can be assembled as a strain sensor with a broad working strain range (∼800%) and quick response time (response time 211 ms and recovery time 253 ms, under 10% strain) to detect various macro‐ and micro‐human motions, even under harsh conditions such as pronunciation and handwriting. The ADM gel can also be used as a humidity sensor to investigate humidity and human respiratory status, suggesting its practical application in personal health management. This study provides a novel strategy for the preparation of high‐performance recycled gels and flexible sensors.This article is protected by copyright. All rights reserved

Molybdenum disulfide (MoS 2 ) has been studied extensively for energy storage because of its excellent electrical properties and unique structure. In this work, the freestanding flexible composite films were prepared by reduced graphene oxide (RGO), polyaniline (PANI), and MoS 2 via a facile method. The all-solid-state flexible supercapacitor based on the ternary composite film shows good electrochemical properties. The special capacitance of supercapacitor is 643.3 mF/cm 2 (∼2144.3 F/cm 3 ). And the all-solid-state flexible supercapacitor presents no particularly obvious fading after bending 200 times. Furthermore, the ternary composite film electrode has certain waterproof effect due to the high content of MoS 2 . The ternary composite film remained high capacitance (614.9 mF/cm 2 ) after soaking in water for 8 h. This work not only develops a facile approach to prepare MoS 2 composite film with flexibility, but also provides a guideline for preparing functional supercapacitor by utilizing properties of MoS 2 such as photoelectric conversion, catalytic function and so on.