2 research outputs found
Polydopamine Wrapping Silicon Cross-linked with Polyacrylic Acid as High-Performance Anode for Lithium-Ion Batteries
A robust silicon electrode for lithium-ion
battery has been developed via prepolymerizing dopamine on silicon
particle surface and then chemical binding with polyÂ(acrylic acid)
(PAA). In this favorable electrode, silicon nanoparticles are covered
by a thin layer of polydopamine (PD) through firm hydrogen bonds between
phenolic hydroxyl and hydroxyl, while the elastic polymer layer reacts
with PAA binder to form three-dimensional cross-linked binding system.
The Si@PD/PAA electrode exhibits more stable cycle performance than
conventional electrodes. In the case of thick electrode, a capacity
of 3.69 mA h cm<sup>–2</sup> and fairly good rechargeability
for 80 cycles can be achieved