0

Yarn-like Rechargeable Zinc Battery Could Power Smart Clothes and Wearables

MzA0MzIxOA

The zinc yarn battery works when knotted, stretched, cut, and washed, Via spectrum.ieee

Researchers have shaped a rechargeable zinc-ion battery into an elastic yarn that churns out power when bent, stretched, washed with water, and even cut.

The zinc yarn battery could be woven into washable sensor-laden smart clothes and integrated into commercial textiles to power wearable displays, electronics, and medical implants.

The yarn joins a line-up of innovative flexible energy-generating and -storing devices that can be integrated into power fabrics. The list includes solar cell ribbons that can be woven into fabrics, knittable supercapacitors, and power-generating yarns that harvest mechanical energy or the triboelectric effect to generate power.

Some researchers have tried to make flexible versions of the workhorse zinc-manganese alkaline battery because of its proven high capacity, low cost, and safety. But these flexible versions have had low capacities. Plus these primary batteries can’t be recharged. But researchers have recently come up with high-performance rechargeable zinc-ion batteries.

Chunyi Zhi of the City University of Hong Kong and his colleagues made their thread-like rechargeable zinc battery by twisting carbon nanotube fibers into yarn. They coat one piece of yarn with zinc to make an anode and another with manganese dioxide to serve as a cathode. Then they wind the two yarn pieces on an elastic fiber, soak it with a commonly used water-absorbing gel, and encase the device in elastic silicone and a water repellant.

The yarn battery, detailed in ACS Nano, has a energy density of 53.8 milliwatt-hours per cubic centimeter, which is around three times as much as commercial thin-film lithium-ion batteries. It retains over 98 percent of its capacity after 500 recharging cycles.

See more!


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 8,500+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — Rethink Robotics closes shop. Long live collaborative robots #makerbusiness

Wearables — Cleaning is key

Electronics — Serial overkill

Biohacking — Biohacking Resources – Books, Talks and Podcasts

Python for Microcontrollers — CircuitPython @ Hackaday SuperCon #ICYMI @circuitpython @micropython @ThePSF #Python

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.