2 research outputs found
Protective Oxide Coating for Ionic Conductive Solid Electrolyte Interphase
To
employ Li-based batteries to their full potential in a wide range
of energy-storage applications, their capacity and performance stability
must be improved. Si is a viable anode material for Li-based batteries
in electric vehicles due to its high theoretical capacity and good
economic feasibility. However, it suffers from physical and chemical
degradation, leading to unstable electrochemical performance and preventing
its incorporation in new Li-based battery systems. Herein, we applied
a polyÂ(vinyl alcohol)-PO<sub>4</sub> protective coating for Si-graphite
anodes and confirmed an improvement in the electrochemical performance.
The experimental results revealed that the polymer acts as a binder
to alleviate the pulverization of the electrode. Furthermore, the
oxide coating reduces the loss of Li<sub>2</sub>O, which has high
ionic conductivity, during operation, resulting in the formation of
a stable solid electrolyte interphase. Our findings suggest that a
stable and ion-conducting anode/interphase can be developed by applying
an oxide and polymer coating in combined approach. Therefore, this
study is expected to provide a basis for the further development and
design of high-performance Li-based battery systems
Full Surface Embedding of Gold Clusters on Silicon Nanowires for Efficient Capture and Photothermal Therapy of Circulating Tumor Cells
We report on rapid thermal chemical vapor deposition
growth of silicon nanowires (Si NWs) that contain a high density of
gold nanoclusters (Au NCs) with a uniform coverage over the entire
length of the nanowire sidewalls. The Au NC-coated Si NWs with an
antibody-coated surface obtain the unique capability to capture breast
cancer cells at twice the highest efficiency currently achievable
(∼88% at 40 min cell incubation time) from a nanostructured
substrate. We also found that irradiation of breast cancer cells captured
on Au NC-coated Si NWs with a near-infrared light resulted in a high
mortality rate of these cancer cells, raising a fine prospect for
simultaneous capture and plasmonic photothermal therapy for circulating
tumor cells