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Recently, a recent study by the University of Pennsylvania in the United States demonstrated a new method to manufacture and package micro-batteries to maximize their energy density in the smallest size
.
The key development of this research is a new type of current collector and cathode
.
It increases the proportion of energy storage materials and at the same time acts as a protective shell, which reduces the need for non-conductive packaging
The new method of fabricating electrodes also makes the electrodes thicker and able to transport ions quickly
.
The traditional cathode is composed of crushed particles compressed together, resulting in a large space between the electrodes and a random internal structure, which slows down the movement of ions in the battery
As wireless electronic devices become smaller and smaller, designers must allow batteries to store more energy in a smaller space
.
At the same time, as they are increasingly being used in mobile devices such as wearable devices and robots, batteries must be lighter and more able to withstand bumps and scratches
In the next step, the researchers will continue to study to further improve the battery performance, so that it can be used in wearable devices and micro robots
