Pseudo‐Zero‐Gap Flow‐Type Aqueous Zn‐CO2 Batteries.
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| Title: | Pseudo‐Zero‐Gap Flow‐Type Aqueous Zn‐CO |
|---|---|
| Authors: | Li, Weiliang1 (AUTHOR), Xu, Guoliang1 (AUTHOR), Huang, Qi2 (AUTHOR), Lu, Tengda1 (AUTHOR), Chen, Sheng2 (AUTHOR), Li, Qiang1 (AUTHOR) liqiang@mail.njust.edu.cn, Duan, Jingjing1 (AUTHOR) jingjing.duan@njust.edu.cn |
| Source: | Advanced Energy Materials. 5/20/2026, Vol. 16 Issue 19, p1-12. 12p. |
| Subject Terms: | *Cathodes, *Electrosynthesis, *Storage batteries, *Martian atmosphere, *Flow batteries |
| Abstract: | Aqueous Zn‐CO2 batteries (AZCBs) generate electricity and convert CO2 into valuable products simultaneously, while their development is limited due to poor mass transport, low reactivity, etc. Therefore, we develop AZCBs featuring flowing CO2 gases and electrolytes, gas‐diffusion cathodes, and especially a pseudo‐zero interelectrode distance. By employing carbon‐coated bismuth oxides (Bi2O3/C) as the cathode in a pseudo‐zero‐gap AZCB, a record‐high peak power density of 67.0 mW cm−2 @current density of 117.5 mA cm−2 is achieved, together with excellent cycling performance over 600 cycles. Specifically, the near‐zero distance greatly promotes hydroxide ion transport and CO2 diffusion by establishing an enhanced concentration gradient at the reaction interface of CO2 electroreduction. Theoretical simulations further indicate preferred formate production is due to the lower energy barrier compared to the CO pathway, because of the favorable *O@Bi adsorption via the *OCHO intermediate. Significantly, the developed AZCBs operate efficiently and stably in a simulated Martian atmosphere, which is promising for future Human exploration of Mars, providing a potential solution for simultaneous energy generation and feedstock production in the challenging environment. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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