Waterproof and Breathable Graphene‐Based Electronic Fabric for Wearable Sensors

Electronic skin (E‐skin) is widely used in bionic prosthesis, soft robotics, and wearable electronic devices. Waterproof and breathable membranes that provide a high level of protection and comfort are promising core materials for meeting the pressing demand for E‐skin. However, creating such materials exhibiting waterproofness, breathability, and ease of fabrication has proven to be a great challenge. In this paper, waterproof, breathable Modal‐based knitted fabric E‐skin is proposed by using a simple, low‐cost three‐step process including the graphene oxide (GO) loading, GO‐reducing, and polydimethylsiloxane loading. The prepared E‐skin is insensitive to common liquids in daily life including water, tea, milk, and coffee, showing superior waterproof capability. The breathability is also tested with a water vapor transmission rate of ≈13.6 mg cm−2 h−1. Besides, this E‐skin can achieve reliable human motion monitoring. The authors believe this E‐skin can provide a reliable principle for further design and development of waterproof and breathable electronic skin. Graphene‐based electronic fabric with excellent waterproofness and breathability is successfully fabricated. The fabric not only shows resistance to common liquids in daily life, but also demonstrates great breathability with water vapor transmission rate of ≈13.6 mg cm−2 h−1. It can be used as a waterproof and breathable E‐skin for reliable human motion monitoring.