1 research outputs found
Facile and Scalable Synthesis of Zn<sub>3</sub>V<sub>2</sub>O<sub>7</sub>(OH)<sub>2</sub>·2H<sub>2</sub>O Microflowers as a High-Performance Anode for Lithium-Ion Batteries
The employment of
nanomaterials and nanotechnologies has been widely acknowledged as
an effective strategy to enhance the electrochemical performance of
lithium-ion batteries (LIBs). However, how to produce nanomaterials
effectively on a large scale remains a challenge. Here, the highly
crystallized Zn<sub>3</sub>ÂV<sub>2</sub>O<sub>7</sub>Â(OH)<sub>2</sub>·​2H<sub>2</sub>O is synthesized through a simple
liquid phase method at room temperature in a large scale, which is
easily realized in industry. Through suppressing the reaction dynamics
with ethylene glycol, a uniform morphology of microflowers is obtained.
Owing to the multiple reaction mechanisms (insertion, conversion,
and alloying) during Li insertion/​extraction, the prepared
electrode delivers a remarkable specific capacity of 1287 mA h g<sup>–1</sup> at 0.2 A g<sup>–1</sup> after 120 cycles.
In addition, a high capacity of 298 mA h g<sup>–1</sup> can
be obtained at 5 A g<sup>–1</sup> after 1400 cycles. The excellent
electrochemical performance can be attributed to the high crystallinity
and large specific surface area of active materials. The smaller particles
after cycling could facilitate the lithium-ion transport and provide
more reaction sites. The facile and scalable synthesis process and
excellent electrochemical performance make this material a highly
promising anode for the commercial LIBs