Mechanically Strong, Freeze‐Resistant, and Ionically Conductive Organohydrogels for Flexible Strain Sensors and Batteries

Abstract Conductive hydrogels as promising material candidates for soft electronics have been rapidly developed in recent years. However, the low ionic conductivity, limited mechanical properties, and insufficient freeze‐resistance greatly limit their applications for flexible and wearable electronics. Herein, aramid nanofiber (ANF)‐reinforced poly(vinyl alcohol) (PVA) organohydrogels containing dimethyl sulfoxide (DMSO)/H 2 O mixed solvents with outstanding freeze‐resistance are fabricated through solution casting and 3D printing methods. The organohydrogels show both high tensile strength and toughness due to the synergistic effect of ANFs and DMSO in the system, which promotes PVA crystallization and…

• NN
  National Natural Science Foundation of China

  Award: 51903046
• SA
  Science and Technology Commission of Shanghai Municipality

  Awards: 20511107200, 20JC1414901, 20JC1414900, 22511103900
• FR
  Fundamental Research Funds for the Central Universities

  Awards: 2232021A‐06, 2232021A-06