Textronics contribute a significant part of Internet‐of‐Things (IoT), which empowers added functionalities by connecting smart clothing in a secure way for diverse applications. For the development of flexible and stretchable textile‐based electronics, a conductive material (yarn, fabric, etc.) must be used, and fabrication techniques play a vital role that significantly influences electronic textiles’ properties. Textile‐based sensors, electrodes, and other devices seem to be the favorite choice for continuous wearable monitoring due to their low cost, flexibility, and ease of embedding. Integrating smart capabilities into textiles provides substantial benefits in the fields of healthcare, sports, automobile, and military. These developments have a profound influence on the Fourth Industrial Revolution (4IR). This Review presents an in‐depth study of the current state of the art in the area of textile‐based electronics. The design, development, and evaluation techniques are discussed. Certain limitations and research gaps are also addressed regarding this emerging field. Critically, this Review is more application focused and indicates how the recent developments in electronic textiles will soon impact our lives. As these areas have typically been neglected in previous reviews, additional knowledge to the existing literature is provided by bridging the gap between the academic research and commercialization of wearable Textronics.

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Some key requirements for a sensor to qualify as a wearable sensor include biocompatibility, aesthetics, comfort, reliable sensing, and signal reliability. The last three are essential factors for acquiring continuous and stable data from a human body. [5] Textile-based sensors are often developed through techniques [6,7] with certain limitations in creating free-form sensor designs because of their complex manufacturing processes. Machine stitching has recently been studied as a potentially scalable method to fabricate textile-based sensors. [8] Different stitch classes have been investigated to study the impact of loop-based stitch structures on the performance of sensors. [9] Also, the effect of stitching parameters on the sensing performance of piezoresistive sensors has been studied. [10] Developing a high-performance textile-based pressure sensor requires an electrically conductive textile medium (fibers, yarn, or fabric) with durability against external forces. [11] Conventional textiles are nonconductive materials and require some practical

Supercapacitors have surfaced as a promising technology to store electrical energy and bridge the gap between a conventional capacitor and a battery. This chapter reviews various fabrication practices deployed in the development of supercapacitor electrodes and devices. A broader insight is given on the numerous electrode fabrication techniques that include a detailed introduction, principles, pros and cons, and their specific applications to provide a holistic view. Key performance parameters of an energy storage device are explained in detail. A further discussion comprises several electrochemical measurement procedures that are used for the supercapacitor performance evaluation. The performance characterization section helps to determine the correct approach that should be utilized for supercapacitor device performance measurement and assessment.