Chemical synthesized nano-Li3V2O5 anode for high-rate rechargeable Li-ion batteries at low temperature

Lithium-ion batteries (LIBs) are widely used and considered as an ideal power supply for different applications. However, severe power/energy loss and lithium dendrite growth at low temperatures are still major problems for the graphite-based LIBs. Here we develop a highly stable nano omega-Li3V2O5 anode (named n-LVO-H) with a suitable lithium embedding potential via a chemical method. Benefiting from a short Li+ transport path, the product n-LVO-H anode accelerates the diffusion of Li+ in the particles. In addition, a robust solid-electrolyte interface layer built on the n-LVO-H particles using 1,3-dioxolane (DOL) based electrolyte with low desolvation energy facili-tates Li+ transport at the interface. Such an unconventional combination of nano-size anode material with DOL electrolyte renders the n-LVO-H cell high C-rate capacity (207.1 mAh g(-1) at 10C), while enjoying cycling sta-bility (92.93 % retention at 10C after 1000 cycles) and low-temperature tolerance (248.1 mAh g(-1) at-20 degrees C and 0.2C) concurrently.

Automated summary

Researchers developed a highly stable nano omega-Li3V2O5 anode (n-LVO-H) with a suitable lithium embedding potential using a chemical method. They also built a robust solid-electrolyte interface layer on the n-LVO-H particles using a low desolvation energy electrolyte, facilitating Li+ transport at the interface. This unconventional combination of nano-size anode material with DOL electrolyte provides high C-rate capacity, cycling stability, and low-temperature tolerance.