Rechargeable Al-CO2 Batteries for Reversible Utilization of CO2

Wenqing Ma; Xizheng Liu; Chao Li; Huiming Yin; Wei Xi; Ruirui Liu; Guang He; Xian Zhao; Jun Luo; Yi Ding

doi:10.1002/adma.201801152

Rechargeable Al-CO₂ Batteries for Reversible Utilization of CO₂

Adv Mater. 2018 Jul;30(28):e1801152. doi: 10.1002/adma.201801152. Epub 2018 May 21.

Authors

Wenqing Ma^{1

2}, Xizheng Liu², Chao Li², Huiming Yin², Wei Xi², Ruirui Liu², Guang He², Xian Zhao³, Jun Luo^{1

2}, Yi Ding^{1

2}

Affiliations

¹ School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China.
² Tianjin Key Laboratory of Advanced Functional Porous Materials and Center for Electron Microscopy (TUT-FEI Joint Laboratory), Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China.
³ State Key Laboratory of Crystal Materials and Key Laboratory of Functional Crystal Materials and Device, Shandong University, Jinan, 250100, China.

PMID: 29782673
DOI: 10.1002/adma.201801152

Abstract

The excessive emission of CO₂ and the energy crisis are two major issues facing humanity. Thus, the electrochemical reduction of CO₂ and its utilization in metal-CO₂ batteries have attracted wide attention because the batteries can simultaneously accelerate CO₂ fixation/utilization and energy storage/release. Here, rechargeable Al-CO₂ batteries are proposed and realized, which use chemically stable Al as the anode. The batteries display small discharge/charge voltage gaps down to 0.091 V and high energy efficiencies up to 87.7%, indicating an efficient battery performance. Their chemical reaction mechanism to produce the performance is revealed to be 4Al + 9CO₂ ↔ 2Al₂ (CO₃ )₃ + 3C, by which CO₂ is reversibly utilized. These batteries are envisaged to effectively and safely serve as a potential CO₂ fixation/utilization strategy with stable Al.

Keywords: Al-CO2 batteries; CO2 fixation/utilization; cathode design; nanoporous gold@Pd; rechargeable.