Abstract
Hierarchical copper oxide nanostructures with caterpillar-like morphologies were facilely integrated onto a highly flexible conductive woven textile substrate by a drop-casting approach.
Highlights
Recent advances in the development of exible, lightweight and wearable energy storage devices are widely anticipated to bring about a new class of portable electronics.[1,2,3,4]
Enhancement of energy density without sacri cing power density is important for SCs.[20]
The re ned crystal structure shows the rectangular parallelogram around Cu atom formed by four coplanar O atoms, and a polyhedron around the O atom formed by four Cu atoms at the corners of a distorted tetrahedron
Summary
Recent advances in the development of exible, lightweight and wearable energy storage devices are widely anticipated to bring about a new class of portable electronics.[1,2,3,4] Various electronic devices, such as smartphones, digital cameras, pressure sensors, ash equipment, and memory backup systems, have been largely reliant on lithium (Li)-ion batteries and supercapacitors as energy storage devices.[5,6,7,8,9] Much attention has been focused on designing exible and textile-based energy storage devices for E-textiles/wearable electronics.[10,11,12] Supercapacitors (SCs) are expected to overcome the limitations of Li-ion batteries.[13,14] SCs have advantages of faster charge/discharge time, safer operation, and greater power enhancement, with longer cyclic life span and higher energy storage than conventional capacitors.[15,16,17] SC energy density is still less satisfactory than that of rechargeable batteries, which has further restricted applications in several elds.[18,19] enhancement of energy density without sacri cing power density is important for SCs.[20].
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