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Abstract Smart textiles are currently being pursued for actuation and sensing for their potential to directly incorporate “intelligence” into the fabric, in contrast to wearable technologies. In smart textiles, smart materials (e.g., piezoelectric) are formed into yarns that are woven into fabrics for clothing. One immediate requirement for such textiles is their stability during washing cycles, as expected of any clothing items, which has been largely lacking so far. Here, we investigate the washing stability of nanofibrous piezoelectric textiles. Our results reveal that electrospun textiles exhibit remarkable structural stability from the fiber microstructure to the textile level. Overall fiber crystalline composition and electroactive phase remain stable within 1% of ~47% and ~85%, respectively. Mechanically, the textile displays sustained performance, with only negligible changes observed. The yield strain and stress only show a ~8% and 9% differences, respectively. Moreover, piezoelectric stability is confirmed through phase preservation and slight variation in voltage output of ~6%. These results prove the candidacy that the processing of electrospun polyvinylidene fluoride (PVDF) fibers to woven textiles is applicable to the demands of smart textiles, which is expected to accelerate the commercialization of such textiles for wearable robotics and health monitoring. 

Advances in vat photopolymerization 3D printing have the potential to significantly improve the production of ceramic materials for electrochemical energy devices. Solid oxide fuel cells (SOFCs) and solid oxide electrolysis cells (SOECs) necessitate high‐resolution ceramic manufacturing methods, as well as precisely controlled porosity (≈20–40%) for optimal gas transport. Achieving a balance between this porosity and mechanical integrity, especially under thermal stress, remains a challenge. Herein, the successful fabrication of porous yttria‐stabilized zirconia (YSZ) ceramics using vat photopolymerization 3D printing is demonstrated, achieving porosities ranging from 6% to 40% and corresponding grain sizes of ≈80–550 nm. It is found that 3D‐printed YSZ with ≈33% porosity exhibited a Weibull modulus ofm = 5.3 and a characteristic strength of over 36 MPa. In the investigation, it is further revealed that these ceramics can withstand thermal shock up to 500 °C, retaining over 70% of their flexural strength. This remarkable performance suggests significant potential for 3D‐printed porous YSZ in SOFCs and SOECs, paving the way for potential improved efficiency, reduced fabrication costs, and innovative designs in these next‐generation clean energy technologies.