Perovskite strontium vanadate nanoparticle as an ideal fast charging anode material in lithium-ion batteries

摘要

Current lithium ion batteries (LIBs) are unable to fulfill electric vehicles' fast charging requirement due to the poor rate performance of commercial LIBs anode materials (graphite and Li4Ti5O12). Thus, developing novel anode materials in LIBs to address the issue of long charging time is highly desirable. In this work, perovskite strontium vanadate (SrVO3) has been investigated as an anode material for LIBs. SrVO3 nanoparticles (SVO NPs) are prepared by gel-sol method and their fast charging performances are studied in the first time. SVO NPs display a safe lithiation potential (similar to 0.4 V), a high capacity of 320.2 mAh g(-1) at 100 mA g(-1), a stable capacity of 171.8 mAh g(-1) at 10000 mA g(-1), and excellent long-term fast-charging performance (capacity of 214.6 mAh g(-1) at 5000 mA g(-1) after 1000 cycles with a high capacity retention of 93.2). This paper opens up a new opportunities to develop high fast charging LIBs.