Wu, Chia-LingChia-LingWuNi, I-ChihI-ChihNiI-CHUN CHENGCHIH-I WUCHIEN-FU CHENJIAN-ZHANG CHEN2026-01-162026-01-162023-09-01https://www.scopus.com/pages/publications/85184518326?origin=resultslisthttps://scholars.lib.ntu.edu.tw/handle/123456789/735457We use screen printing to deposit LiCl + Ni(NO3)2·6H2O pastes on a flexible carbon cloth substrate and then calcine it using a nitrogen atmospheric-pressure-plasma jet (APPJ). Through the high-temperature treatment by APPJ, pastes can be rapidly converted into Li-Ni oxides (LNOs). The LNOs on carbon cloth are then used as the electrodes of flexible gel-electrolyte Li-ion hybrid supercapacitors (Li-ion HSCs). The best areal capacity of 21.076 mC cm−2, as measured by cyclic voltammetry, is achieved by APPJ treatment at 620 °C for 480 s. To demonstrate the flexibility of the Li-ion HSCs, the Li-ion HSCs were bent at different curvatures to measure its performance. After bending test, the capacity remains >93% under bending with a curvature of up to 2 cm−1truejournal article10.1149/2754-2734/ace4dd2-s2.0-85184518326