Before revision: A small amount, 0.2 - 0.8 V of electricity is used, the original article reports an overall energy efficiency of 288%DIF < can be achieved (this is computed relative to the amount of electricity used, waste heat lowers the overall efficiency).
After revision: A small amount, 0.2 – 0.8 V of electricity is used, the original article reports an overall energy efficiency of 288%DIF < can be achieved (this is computed relative to the amount of electricity used, waste heat lowers the overall efficiency).