Supercharged Flexible Batteries: A New Multidimensional Mix

In the world of flexible electronics, planar microsupercapacitors (MSCs) are superstars. They store energy and deliver power, making them ideal for wearable devices. But creating high-performance MSCs is tricky. You need materials that let ions move quickly and offer lots of active sites. Scientists have come up with a clever solution: a mix of tiny dots, tubes, and sheets called dot-tube-sheet multidimensional heterostructure films (MHFs). These MHFs are made using a simple mask-assisted strategy. They combine 0D carbon dots (CDs), 1D carboxyl-carbon nanotubes (c-CNTs), and 2D Ti3C2 MXene nanosheets. This combo offers high electrical conductivity, plenty of space between layers, lots of tiny channels, and strong mechanical strength.

When tested, these CDs/c-CNTs/Ti3C2 MHF electrodes showed impressive results. They had an areal capacitance of 1162. 6 mF cm-2 at 0. 8 mA cm-2 and kept 107. 1% of their capacity after 10, 000 cycles in a 1 M H2SO4 electrolyte. That's pretty amazing! The solid-state MSCs made with these MHFs also performed well. They had a high energy density (11. 1 mWh cm-2) and kept 102. 1% of their capacity after 8000 cycles. This is better than many other MSCs out there. Imagine powering your wearable devices with these MSCs. They can be connected in parallel or series to meet different power needs. This shows their potential for real-world use.

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