Initiating a High-Rate and Stable Aqueous Air Battery by Using Organic N-Heterocycle Anode

Li，Senlin1; Hu，Sanlue1; Li，Hongfei2,3; Han，Cuiping1

2024

10.1002/anie.202318885

Angewandte Chemie - International Edition   影响因子和分区

1433-7851

1521-3773

Alkaline metal-air batteries are advantageous in high voltage, low cost, and high safety. However, metal anodes are heavily eroded in strong alkaline electrolytes, causing serious side reactions including dendrite growth, passivation, and hydrogen evolution. To address this limitation, we successfully synthesized an organic N-heterocycle compound (NHCC) to serve as an alternative anode. This compound not only exhibits remarkable stability but also possesses a low redox potential (−1.04 V vs. Hg/HgO) in alkaline environments. To effectively complement the low redox potential of the NHCC anode, we designed a dual-salt highly concentrated electrolyte (4.0 M KOH+10.0 M KCFSO). This electrolyte expands the electrochemical stability window to 2.3 V through the robust interaction between the O atom in HO molecule with the K of KCFSO (H−O⋅⋅⋅KCFSO). We further demonstrated the K uptaken/extraction storage mechanism of NHCC anodes. Consequently, the alkaline aqueous NHCC anode-air batteries delivers a high battery voltage of 1.6 V, high-rate performance (101.9 mAh g at 100 A g) and long cycle ability (30,000 cycles). Our work offers a molecular engineering strategy for superior organic anode materials and develops a novel double superconcentrated conductive salt electrolyte for the construction of high-rate, long-cycle alkaline aqueous organic anode-air batteries.

Air Battery Alkaline Aqueous Electrolyte N-Heterocycle Compounds Organic Anode Superconcentrated Electrolyte

SCI ; EI

英语

其他

CHEMISTRY

2-s2.0-85183784161

Scopus

1.Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen,518055,China
2.School of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen,518055,China
3.Songshan Lake Materials Laboratory,Dongguan,Guangdong,523808,China

Li，Senlin,Hu，Sanlue,Li，Hongfei,et al. Initiating a High-Rate and Stable Aqueous Air Battery by Using Organic N-Heterocycle Anode[J]. Angewandte Chemie - International Edition,2024,63(11).

Li，Senlin,Hu，Sanlue,Li，Hongfei,&Han，Cuiping.(2024).Initiating a High-Rate and Stable Aqueous Air Battery by Using Organic N-Heterocycle Anode.Angewandte Chemie - International Edition,63(11).

Li，Senlin,et al."Initiating a High-Rate and Stable Aqueous Air Battery by Using Organic N-Heterocycle Anode".Angewandte Chemie - International Edition 63.11(2024).