International Team Develops Lavender Waste-Based Sodium-Ion Batteries with Enhanced Stability
An international research team has identified electrochemical presodiation as the best method for stabilizing sodium-ion batteries (SIBs) made from lavender flower waste. This advancement addresses the sodium reservoir shortage impacting bio-based battery performance.
Lavender waste, approximately 1,000-1,500 tons annually, has been converted into hard carbon for use as a high-performance anode. The anode paired with a P2-type cathode (Na0.67Mn0.9Ni0.1O2) showed improved electronic conductivity and structural stability due to the incorporation of nickel.
Electrochemical tests revealed a cathode capacity of 200 mAh/g with 42% retention after 100 cycles, while the anode capacity was 360 mAh/g with 67.4% retention. The study concluded that electrochemical presodiation offered optimal energy density and cycling stability for commercial energy storage applications.
