Engineering (Ni, Co, Mn) Se nanoarrays with 3D-Printed wave-structure carbon-rich lattice towards ultrahigh-capacity, complex-stress and all-climate energy storage

Energy storage capacity and environmental adaptability as the two important elements of energy storage devices towards an intelligent Internet of things era, the two often do not co-existence. The continuous exploration of advanced multifunctional electrodes is of great significance to achieve balance between superior capacity and complex service environment adaptability. Notably, it still remains a great challenge to realize high capacity under extreme complex stress and climate environments. Herein, coralline-like (Ni, Co, Mn) Se nanoarrays were synthesized on highly-conductive 3D-printed wave-structure carbon-rich periodic lattices as multitasking free-standing, binder and current collector-free electrodes towards editable ultrahigh-capacity, complex-stress and all-climate energy storage. As expected, the as-prepared wave-structure electrodes exhibit a combination of editable ultrahigh capacitive performance (5.6–7.8 F cm⁻² at 1 mA cm⁻²), superb mechanical resistance (up to 260 MPa) and wide climate compliance (temperature: from −20 to 85 °C; humidity: from 20 to 85% RH). More impressively, such a multipurpose device also demonstrates a record-high areal energy density of 260 μWh cm⁻², and an ultralong lifespan even under extreme conditions of 85 °C & 85% RH & 3 MPa. This strategy opens up novel avenues to explore various bespoke multifunctional integrated devices and multiscale structural materials for future smart life.