Journal
CHEMICAL COMMUNICATIONS
Volume 58, Issue 59, Pages 8226-8229Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2cc02724k
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Funding
- Project of International Science and Technology Cooperation in Guangdong Province [2020A0505100016]
- Shenzhen Sauvage Nobel Laureate Laboratory for Smart Materials
- Shenzhen Science and Technology Program [KQTD20200820113045083]
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A modification strategy of polyaniline (PANI) coating on zinc ferricyanide (ZnHCF) is proposed to inhibit the dissolution of ZnHCF and achieve two stable discharge voltage platforms and high capacity in Zn-ion batteries. The battery also exhibits high stretchability and maintains stable electrochemical properties during stretching.
Aqueous Zn-ion batteries have gained popularity due to their low cost and high safety, but their low energy density limits their application scenarios. Although the Prussian blue analogue (PBA) has the characteristics of high redox potential, the poor capacity and cycling performance restrict its further development. Here, we propose a modification strategy of a polyaniline (PANI) coating on zinc ferricyanide (ZnHCF). The PANI coating inhibits the dissolution of ZnHCF and enables the Zn-ion battery to present two long-flat discharge voltage platforms as well as a high capacity of 150 mA h g(-1), which provides a new idea for the development of high-performance PBA battery materials. Meanwhile, owing to the spring-like structure, the battery has a high stretchability of 600% and maintains stable electrochemical properties during stretching.
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