Translated by
2017/09/18 07:43:33

Li-ion

Type  of the electrical accumulator which is widespread in modern  home electronic appliances  and finds the application as a power source in electric vehicles and drives of energy in power generating systems.

Content

2017: Development of water-based batteries

In September, 2017 it became known of development of new type of water-based accumulators. The main feature of such batteries states complete security as they do not explode.

It is about the li-ion cell which uses  water-salt solution as electrolyte. Innovation which works energized only 4 V was created by specialists of Research laboratory of U.S. Army (U.S. Army Research Laboratory, ARL) and  the University of Maryland.

Li-ion cell prototype with electrolyte on the basis of water-salt solution
Li-ion cell prototype with electrolyte on the basis of water-salt solution
«
This absolutely reliable and  flexible Li-ion battery has  the same power density, as  the latest Li-ion batteries  — the employee of ARL Kang Xu says. —  Batteries will be in  security  — neither  fire, nor  explosions  — even at operation in  extreme conditions.
»

The term of life of such accumulators remains a problem. By September, 2017 they maintain only 50-100 cycles charge/discharge while traditional Li-ion analogs are capable to work during 500-1000 cycles. If scientists manage to solve this problem, new generation of smartphones and other electronics will be absolutely safe that is relevant, considering the juicy scandal with a withdrawal of the explosive Samsung Galaxy Note 7 smartphones.

When using Li-ion it is difficult to exclude completely ignition because of composition of electrolytes which carry current during charging or operation of the battery when ions move between electrodes. Usually electrolytes make from flammable chemicals to provide accumulation of enough energy.

Water batteries should solve this problem. At due financing they will appear in the commercial market within five years, Kang Xu reported.[1]

Electric vehicles



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