Researchers from Sungkyunkwan University in Seoul have developed a piezoelectric battery can be recharged using ambient sounds and voice of the user. For now, it takes about 100 dB to produce 50 mV. Filaments of zinc oxide are sandwiched between two electrodes. Membrane absorbs sound vibrations and cause zinc oxide to contract and relax.
This movement creates an electrical current that will be used to recharge the battery. 100 decibels is equivalent to the noise experienced at 10 meters of a road charge, or 25 meters of a TGV rolling at 300 km / h. Yields are not yet sufficient to power the battery of a phone, but the researchers hope to overcome this problem by working on the material of the fiber placed between two electrodes.
At this stage of development, it is nevertheless possible to consider small sensors installed in our cars or the human body. This is not the first time that we speak of a piezoelectric charger in our columns. Nokia has filed a patent last year describing a battery capable of drawing its energy from the user's movements (see "A piezoelectric battery by Nokia).
Scientists at the Georgia Institute of Technology had meanwhile developed a model powered by the heartbeat of the user. The problem is that the mass production of this type of tool is very difficult and yields are extremely low power, which limits their use to niche markets. However, research advances and it is expected that mobile devices that populate our stores in five to ten years will reap their energy sources around us or the movements of our body. 
This movement creates an electrical current that will be used to recharge the battery. 100 decibels is equivalent to the noise experienced at 10 meters of a road charge, or 25 meters of a TGV rolling at 300 km / h. Yields are not yet sufficient to power the battery of a phone, but the researchers hope to overcome this problem by working on the material of the fiber placed between two electrodes.
At this stage of development, it is nevertheless possible to consider small sensors installed in our cars or the human body. This is not the first time that we speak of a piezoelectric charger in our columns. Nokia has filed a patent last year describing a battery capable of drawing its energy from the user's movements (see "A piezoelectric battery by Nokia).
Scientists at the Georgia Institute of Technology had meanwhile developed a model powered by the heartbeat of the user. The problem is that the mass production of this type of tool is very difficult and yields are extremely low power, which limits their use to niche markets. However, research advances and it is expected that mobile devices that populate our stores in five to ten years will reap their energy sources around us or the movements of our body.
No comments:
Post a Comment