Weavable yarn-shaped supercapacitor in sweat-activated self-charging power textile for wireless sweat biosensing

A hierarchical layered double hydroxide electrode with surface porous microstructured fibers for flexible and wearable energy storage

“…The as-fabricated ASC device deliveries a high energy density of 22.52 μW h cm −2 at the power density of 0.37 mW cm −2 and still holds 12.06 μW h cm −2 at the maximum power density of 7.43 mW cm −2 , indicating superior electrochemical energy storage performance. Compared with recently reported fiber/yarn based supercapacitors and other all-solid-state supercapacitors in terms of areal energy density, our device showed a prominent performance in energy storage, including textile-based rGO/PPy@PET (11 μW h cm −2 at 0.03 mW cm −2 ), 48 RGO/CNT@carboxymethyl cellulose (CMC) coaxial wet-spun yarn (3.84 μW h cm −2 at 0.02 mW cm −2 ), 49 PET/Au/Ni-MOF@carbon yarn (5.41 μW h cm −2 at 0.034 mW cm −2 ), 50 RGO/conducting polymer composite fiber (6.8 μW h cm −2 at 0.17 mW cm −2 ), 23 PPy/PEDOT:PSS yarn (22.7 μW h cm −2 at 2 mW cm −2 ), 51 PEDOT:PSS hydrogel (15.73 μW h cm −2 at 0.40 mW cm −2 ), 52 PEDOT:PSS@cloth (1.63 μW h cm −2 at 0.4 mW cm −2 ), 53 MXene ink/polymer gel (0.32 μW h cm −2 at 0.11 mW cm −2 ), 54 PEDOT:PSS/Ag nanofibers/NOA 63 (0.09 μW h cm −2 at 0.93 mW cm −2 ), 55 and carbon fiber/cellulose hydrogel (0.017 μW h cm −2 at 5.33 mW cm −2 ). 56 Table S1† compares the detailed electrode and energy/power density obtained in this work with other wearable SCs reported in the literature.…”

Enzymatic biofuel cell: A potential power source for self-sustained smart textiles

“…Yarns as an intermediate type of fabric between fibers and textiles, can be easily fabricated from fibers or be woven to textiles. 61 Yarns have the similar dimension as fibers, thus can be also applicated in implantation. Kim’s group explored a series of work toward CNT yarn based EBFCs.…”

Advances in Fiber-Based Wearable Sensors for Personal Digital Health Monitoring

“…The high ion content of sweat allows it to be used as a natural electrolyte for preparing biocompatible energy sources. Xiao et al developed a sweat-driven yarn-based biosupercapacitor with a symmetrical dual-electrode structure (Figure 7e) [31]. Stainless steel fiber-based yarn, conductive polymer, and sweat were used as the current collector, active material, and electrolyte, respectively.…”

“…Products incorporating fiber-based sensors not only allow people to move freely but also ensure that signals from human body deformation can be accurately collected in real time for personal digital health. Such devices are capable of monitoring various types of personal digital health signals, such as biomechanical signals [21][22][23][24][25][26], biotemperature [27][28][29][30], biofluids, as well as respiratory gas [31][32][33][34]. Based on these brilliant advantages and diverse applications, fiber-based sensors show great potential in the fabrication of compact, lightweight, cost-effective, and efficient personal digital health monitoring devices.s…”