Fiber-shaped supercapacitors are a desirable
high-performance energy storage technology for wearable
electronics. The traditional method for device fabrication is based
on a multistep approach to construct energy devices, which can
present challenges during fabrication, scalability and durability.
To overcome these restrictions, Jingxin Zhao and a team of
scientists in physics, electrochemical energy, nanoscience,
materials, and chemical engineering in China, the U.S., and
Singapore, developed an all-in-one coaxial fiber-shaped asymmetric
supercapacitor (FASC) device. The team used direct coherent
multi-ink writing, three-dimensional (3-D) printing technology by
designing the internal structure of the coaxial needles and
regulating the rheological property and feed rates of the
multi-ink. The device delivered a superior areal energy and power
density with outstanding mechanical stability. The team integrated
the fiber-shaped asymmetric supercapacitor (FASC) with mechanical
units and pressure sensors to realize high performance and
self-powered mechanical devices to monitor systems. The work is now
published on Science Advances.
