Cross-linked polyaniline for production of long lifespan aqueous iron||organic batteries with electrochromic properties

Lv，Haiming1,2; Wei，Zhiquan3; Han，Cuiping4; Yang，Xiaolong1; Tang，Zijie1; Zhang，Yantu2; Zhi，Chunyi1,3; Li，Hongfei1,5

2023-12-01

10.1038/s41467-023-38890-y

Nature Communications   Impact Factor & Quartile

2041-1723

Aqueous iron batteries are appealing candidates for large-scale energy storage due to their safety and low-cost aspects. However, the development of aqueous Fe batteries is hindered by their inadequate long-term cycling stability. Here, we propose the synthesis and application as positive electrode active material of cross-linked polyaniline (C-PANI). We use melamine as the crosslinker to improve the electronical conductivity and electrochemical stability of the C-PANI. Indeed, when the C-PANI is tested in combination with a Fe metal negative electrode and 1 M iron trifluoromethanesulfonate (Fe(TOF)) electrolyte solution, the coin cell can deliver a specific capacity of about 110 mAh g and an average discharge voltage of 0.55 V after 39,000 cycles at 25 A g with a test temperature of 28 °C ± 1 °C. Furthermore, mechanistic studies suggest that Fe ions are bonded to TOF anions to form positively charged complexes Fe(TOF), which are stored with protons in the C-PANI electrode structures. Finally, we also demonstrate the use of C-PANI in combination with a polymeric hydrogel electrolyte to produce a flexible reflective electrochromic lab-scale iron battery prototype.

SCI

English

NI Journal Papers ; NI论文

Corresponding

Guangdong Basic and Applied Basic Research Foundation["2020A1515110896","2020A1515110442","2019A1515110980"] ; National Natural Science Foundation of China[22005207] ; Open Research Fund of Songshan Lake Materials Laboratory[2021SLABFN04] ; National Key R&D Program of China[2019YFC1905801]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001058998300029

NATURE PORTFOLIO

2-s2.0-85160620391

Scopus

1.Songshan Lake Materials Laboratory,Dongguan,Guangdong,523808,China
2.Key Laboratory of New Energy & New Functional Materials,Shaanxi Key Laboratory of Chemical Reaction Engineering,College of Chemistry and Chemical Engineering,Yan’an University,Yan’an,Shaanxi,716000,China
3.Department of Materials Science and Engineering,City University of Hong Kong,999077,Hong Kong
4.Faculty of Materials Science and Engineering,Low Dimensional Energy Materials Research Center,Shenzhen Institutes of Advanced Technology,Chinese Academy of Sciences,Shenzhen,518055,China
5.School of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Lv，Haiming,Wei，Zhiquan,Han，Cuiping,et al. Cross-linked polyaniline for production of long lifespan aqueous iron||organic batteries with electrochromic properties[J]. Nature Communications,2023,14(1).

Lv，Haiming.,Wei，Zhiquan.,Han，Cuiping.,Yang，Xiaolong.,Tang，Zijie.,...&Li，Hongfei.(2023).Cross-linked polyaniline for production of long lifespan aqueous iron||organic batteries with electrochromic properties.Nature Communications,14(1).

Lv，Haiming,et al."Cross-linked polyaniline for production of long lifespan aqueous iron||organic batteries with electrochromic properties".Nature Communications 14.1(2023).