In view of the problems of complicated process, high cost, poor integration with textiles existing in the preparation of flexible electrical circuits in smart textiles, a method of micro-jet printing primary cell replacing deposit fabric-based electrical circuits is proposed. Based on the use of the piezoelectric micro-droplet ejection system, the effects of the concentration and mass of silver nitrate and ascorbic acid and the selection of anode substrate on morphology and square resistance for the formed circuits were studied. The results show that under stable ejection conditions, the fabric-based electrical circuits can be prepared using the proposed method. When the mass concentration of silver nitrate solution is 0. 5 g/mL and that of ascorbic acid is 0. 3 g/mL, the number of silver nitrate printing layers is 4, and the mass ratio of fabric to ascorbic acid solution is 1∶2, the obtained square resistance and standard deviation of the formed silver circuits are 0. 047 8Ω/□and 0. 009 138Ω/□, respectively. When copper was applied for the base board, the silver layers on the surface of fabric substrate are uniform and dense with large silver particle size, and the average square resistance and variance of the obtained silver circuits became smaller.
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