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Jianyu Huang's blog

Electrolyte Stability Determines Scaling Limits for Solid-State 3D Li Ion Batteries

Nano Lett., 2012, 12 (1), pp 505–511

 

Rechargeable, all-solid-state Li ion batteries (LIBs) with high specific
capacity and small footprint are highly desirable to power an emerging
class of miniature, autonomous microsystems that operate without a
hardwire for power or communications. A variety of three-dimensional
(3D) LIB architectures that maximize areal energy density has been
proposed to address this need. The success of all of these designs
depends on an ultrathin, conformal electrolyte layer to electrically

Multiple-Stripe Lithiation Mechanism of Individual SnO2 Nanowires in a Flooding Geometry

PRL 106, 248302 (2011)     The atomic scale lithiation mechanism of individual SnO2 nanowires in a flooding geometry was revealed by in situ transmission electron microscopy. The lithiation was initiated by the formation of multiple stripes with a width of a few nanometers parallel to the (020) plane traversing the entire wires, serving as multiple reaction fronts for later stages of lithiation.

Surface mediated plasticity in sub-10-nm-sized gold crystals

Nature Communications 1, Article number:144 | DOI:10.1038/ncomms1149

Although deformation processes in submicron-sized metallic crystals are
well documented, the direct observation of deformation mechanisms in
crystals with dimensions below the sub-10-nm range is currently lacking.
Here, through in situ high-resolution transmission electron
microscopy (HRTEM) observations, we show that (1) in sharp contrast to
what happens in bulk materials, in which plasticity is mediated by
dislocation emission from Frank-Read sources and multiplication, partial
dislocations emitted from free surfaces dominate the deformation of

Real time observation of battery charging/discharing at atomic resolution

Huang et al, Science 330, 1515-1520 (2010) (download pdf , or online version);Read a perspective written by Prof. Yet-Ming Chiang, Science 330, 1485 (2010);

Dislocation migration in carbon onions

Phys. Rev. Lett. 105, 106102 (2010) 

What does a dislocation look like in a spherical geometry, and how does it migrate in such a structure? We report here the counterintuitive motion of the 1/2⟨0001⟩ edge dislocation in carbon onions from the outer surface to the inner core, i.e. from a low pressure surface to a high pressure core, rather than from the core to the surface as expected due to a surface image force. Maybe you can help us to explain this peculiar phenomenon.

Cold welding of ultrathin gold nanowires

Nature Nanotechnology, Feb. 14, 2010. DOI: 10.1038/NNANO.2010.4, Yang Lu, Jian Yu Huang, Chao Wang, Shouheng Sun and Jun Lou

TEM Postdoc Position at Sandia National Lab.

TEM Postdoc Position Available at Sandia National Lab.

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