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New battery storage capacity can reach 5 times the lithium battery

Release time:2017-06-20 15:46:00Click:


University of Cambridge scientists published a paper to <  Advanced Functional Materials> in the journal describes the design of lithium sulfur batteries in the near future. This battery is inspired by the human intestinal mucosa, 5 times the energy storage can reach the traditional lithium ion battery.


In the traditional lithium battery, charged lithium ion in anode movement between the electrolyte and cathode electrode. The crystal structure usually will determine how much battery energy capacity. The carbon electrode only lithium ion battery by carrying 6 lithium ion, thus limiting the energy storage capacity.


Lithium and sulfur reaction is different. Through the so-called "electronic transmission structure", theoretically, sulfur storage capacity is far higher than that of lithium ion batteries. However, with the discharge of lithium and sulfur reaction, sulfur will form polysulfide and into the electrolyte, resulting in the loss of the active material of the battery.


The new University of Cambridge researchers designed the growth of a layer of Zinc Oxide nanowires on carbon electrode appearance. The final structure and human intestinal villi are similar, can capture polysulfides. This will ensure that the electrochemical properties of materials, reuse.


But the battery also has its own limitations, such as charging times are not up to the level of the lithium battery. However, lithium sulfur battery with high energy density, each charge can be used for a longer time.


At present, this design is still in the proof of concept phase. If a commercial, it will bring a new generation of large capacity battery.


Professor at the University of Cambridge Department of materials science and metallurgy, the joint author Paul Coxon (Paul Coxon) said: "we are connected to their electronic equipment. Finally, we try to make these devices work better, make our life more beautiful".