 This research has developed a new type of single-atom catalyst based on iron called FeNCC, which can be used to convert carbon dioxide into carbon monoxide. The catalyst has been shown to have excellent electro-catalytic performance, allowing it to operate at much lower voltages than other similar catalysts. Additionally, this catalyst has been incorporated into a zinc carbon dioxide battery, which allows for the efficient conversion of carbon dioxide into useful energy. This article was authored by Changxing Chao, Xinhua Zhou, Xiaoweizhua, and others.