Remark : 10x faster for short time energy storage is impressive for control energy (Regelenergie)!
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Korean researcher team
led by Prof. Ho Seok Park in Chemical Engineering Dept. at
Sungkyunkwan University have developed a super capacitor battery with
twice as large capacity and ten times faster speed than conventional
batteries controlling two dimensional nanomaterial structure and
composition. The technology is widely expected to facilitate the
development of an ultra super capacitor material utilized in next
generation energy industry such as electric vehicles and smart grids.
The electric double
layer capacitors (EDLC) boasts high power output, faster recharge and
discharge, and semi-permanent battery life. However, low energy density can
restrict the application. EDLC is a type of super capacitor that stores or
discharges energy within seconds by absorbing ion electrically pulled from
the electrode surface.
A series of research
has been conducted in advanced countries including the US to enhance the
energy density by developing a super capacitor electrode material. The
research team found secondary nanosheet by chemically exfoliating the bulk
layered compound made of transitional metal and sulfur as they would to
retrieve graphene shedding off a layer of graphite before they build the
two dimensional nanosheet into a three dimensional structure.
The result was
published in the science magazine ‘Nano Letters’ on March 3, titled as
‘Unveiling Surface Redox Charge Storage of Interacting Two-Dimensional
Heteronanosheets in Hierarchical Architectures.’
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