Siberia | Energy, utilities | Materials, extraction

Scientists bet on improved lithium-ion batteries

27 Mar '18
To step up Li-ion battery capacity and increase charging speed, Russian scientists are using a combination of graphene and a vanadium disulfide monolayer as a new anode material.

The new composite has a 2D structure with graphene and vanadium disulfide as two non-homogenous layers about one nanometer thick. We have shown that Li ions can be bonded both on the surface of such material and between the layers, which results in an increase in specific capacity, said Maksim Vysotin of the Krasnoyarsk-based Kirensky Institute of Physics in Siberia.

The scientists estimate the composites possible capacity at 569mAh per gram of the anode material, which is double that of graphite, a material widely used in todays Li-ion batteries. Computation has led the team to believe that using the vanadium disulfide / graphene heterostructure does not only improve electron transfer but also makes the material stronger mechanically.

On top of high capacity, another outstanding feature of the composite is high Li ion mobility inside. That makes it possible to charge the battery faster and/or use the battery to power high power devices. Also, increased ion mobility brings hope that a new such battery will perform well at low temperatures, said Zakhar Popov of a nanomaterial team at MISiS, a leading technology university in Moscow.
Publish in Twitter
Write to Facebook
Google Buzz
Write to LiveJournal
Show in MM
Share MK
Find Related Content


Tags: ion (4105) / capacity (13) / graphene (12) / monolayer (1) / vanadium disulfide (0) / Li ion batteries (0) /

Latest News: Siberia
4 Oct '18 | Technology & innovation
18 Sep '18 | Technology & innovation
23 Aug '18 | Technology & innovation
12 Apr '18 | Technology & innovation
27 Mar '18 | Energy, utilities | Materials, extraction

Feature stories

27 Aug '18
7 Jun '18
Russian scientists have come up with a new method of...
3 Apr '18
In regions most of European Russians will hardly ever...
Search (News archive - 21280)
Independent Software Developers Forum
Marchmont News

Latest News

15 Oct '18
InSize, a Russian company, has developed and is...
11 Oct '18
Russia is stepping up support for developers of IT...
10 Oct '18
Primer Capital, a Russian venture fund, has invested...

Most read stories from last week