What is a printable battery?
First, we need to understand what printable battery technology is. It is understood that printable battery technology actually belongs to functional printing, which uses printing technology to print raw materials (called functional ink) on the surface of substrate (substrate), so as to produce electronic components rapidly and at low cost, such as circuit boards, RFID tags, sensors, batteries, etc.
Compared with 3D printing, functional printing is not familiar to us at present, and it is in the key stage from laboratory to large-scale application.
The latest news is that recently, according to foreign media reports, scientists have developed an experimental chemical battery for flexible equipment, claiming that the energy density is 10 times that of current lithium ion. The technology will also make it easier to commercialize flexible batteries, which the researchers say can adjust to the design of the phone rather than accommodate the bottleneck.
The work, carried out by scientists at the University of California, San Diego, focused on a battery chemistry called silver zinc oxide. Due to higher energy density and safety considerations, silver zinc oxide has been a potential alternative solution. But it also has some problems that prevent widespread adoption - instability leads to limited cycle life.
In collaboration with the California company ZPower, the UC San Diego team solved the problem with a new anode material. The cathode uses lead oxide coating to improve the electrochemical stability and conductivity of the battery and reduce its impedance, which is the resistance of the battery to alternating current.
With this new cathode, the researchers began to do something they had never done before: screen printed silver oxide zinc batteries.
Although this chemical method is suitable for most commercial flexible batteries, they need to be assembled together in a vacuum under sterile conditions to resist chemical instability and high oxidation resistance, so the cost is still high.
Through experiments, the team has come up with an ink formula that they say can now print these batteries. The collector, zinc anode, new cathode and separator were screen printed on a chemically stable polymer film with a melting point of about 200 ° C (392 ° f).
So they managed to create a flexible, stretchable battery with a capacity of 50 Ma per square centimeter, which the team claims is 10 to 20 times larger than a typical lithium-ion battery.
Huachuang Securities pointed out that with the wide application of portable electronic products and wearable devices, the deformable lithium battery has the characteristics of paper like softness and folding, which makes it have broad prospects in the next generation of ultra-thin and easy to bend electronic devices. Once this research result can be improved and put into commercial application in the future, it may produce the design of electronic products in the future Revolutionary influence.