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Digital photos of (a) a flexible solid-state zinc–air battery (ZAB) with three modules in series; (b–f) 75 red LEDs with “SCNU” shape powered by the ZAB of the panel (a) under bending angles of 180°, 135°, 90°, 45°, and 0°, respectively; (g–l) ZAB under bending angles of 0° powering a 3V LED breastpiece, ZAB as a wearable bracelet, ZAB powering a 3V LED breastpiece at different bending radii of 4, 3, and 2.5 cm, respectively. Reproduced from reference [96] under CC BY 4.0 license.
