China’s record-breaking EV supercapacitor retains 81% power after 10,000 cycles

A Chinese research team has developed a breakthrough hybrid electrolyte for supercapacitors, addressing limitations of conventional aqueous designs. The new ternary electrolyte combines water, an ionic liquid, and a potassium salt, enabling operation at higher voltages and extreme temperatures. The supercapacitor demonstrated exceptional performance, retaining 81.8% capacity after 10,000 charge cycles at high temperatures. This innovation could significantly improve the practical applications of supercapacitors in vehicles, power supplies, and electronic devices.