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Pan Z, Ni G, Li Y, Shi Y, Zhu F, Cui P, Zhou C. Stabilizing Zinc Hexacyanoferrate Cathode by Low Contents of Cs Cations for Aqueous Zn-Ion Batteries. CHEMSUSCHEM 2024:e202400713. [PMID: 38785104 DOI: 10.1002/cssc.202400713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/17/2024] [Accepted: 05/24/2024] [Indexed: 05/25/2024]
Abstract
Exploring cathode materials with excellent electrochemical performance is crucial for developing rechargeable aqueous zinc ion batteries (RAZIBs). Zinc hexacyanoferrate (ZnHCF), a promising candidate of cathode materials for RAZIBs, suffers from severe electrochemical instability issues. This work reports using low contents of alkaline metal cations as electrolyte additives to improve the cycle performance of ZnHCF. The cations with large sizes, particularly Cs+, changes the intercalation chemistry of ZnHCF in RAZIBs. During cycling, Cs+ cations co-inserted into ZnHCF stabilize the host structure. Meanwhile, a stable phase of CsZn[Fe(CN)6] forms on the ZnHCF cathode, suppressing the loss of active materials through dissolution. ZnHCF gradually converts to an electrochemically inert Zn-rich phase during long-term cycling in aqueous electrolyte, leading to irreversible capacity loss. Introducing Cs+ in the electrolyte inhibits this conversion reaction, resulting in the extended lifespan. Owing to these advantages, the capacity retention rate of ZnHCF/Zn full batteries increases from the original 7.0 % to a high value of 54.6 % in the electrolyte containing 0.03 M of Cs2SO4 after 300 cycles at 0.25 A ⋅ g-1. This research provides an in-depth understanding of the electrochemical behavior of ZnHCF in aqueous zinc electrolyte, beneficial for further optimizing ZnHCF and other metal hexacyanoferrates.
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Affiliation(s)
- Zhiqiu Pan
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 23009, Anhui, P. R. China
| | - Gang Ni
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 23009, Anhui, P. R. China
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 23009, Anhui, P. R. China
- Anhui Sierte Fertilizer Industry Ltd. Company, Ningguo, 242300, Anhui, P. R. China
| | - Yi Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 23009, Anhui, P. R. China
| | - Yinuo Shi
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 23009, Anhui, P. R. China
| | - Fuxiang Zhu
- Anhui Sierte Fertilizer Industry Ltd. Company, Ningguo, 242300, Anhui, P. R. China
| | - Peng Cui
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 23009, Anhui, P. R. China
| | - Chenggang Zhou
- Faculty of Materials Science and Chemistry, China University of Geoscience, Wuhan, 430074, Hubei, P. R. China
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Wei Z, Zhao W, Hu J, Deng T, Zhang N. Engineering a defect-rich Prussian blue analog composite for enhanced Cs + removal performance. Chem Commun (Camb) 2024; 60:396-399. [PMID: 38079190 DOI: 10.1039/d3cc05170f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Using a novel, irregular honeycombed N-doped porous carbon (NPC) as a support and defect inducer, defect-rich Zn-PBA was formed in situ and evenly anchored on the surface of NPC to obtain a defect-rich Zn-PBA/NPC composite. This composite demonstrated an ultrafast Cs+ adsorption rate that reached equilibrium within 60 s as well as excellent adsorption capacity, stability and reusability. The adsorption mechanism indicated that Cs+ was quickly adsorbed via the defect sites close to the Zn-PBA crystal face accompanied by K(OH2)+ elimination.
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Affiliation(s)
- Zhenwei Wei
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China.
| | - Weilian Zhao
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China.
| | - Jiayin Hu
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China.
| | - Tianlong Deng
- Tianjin Key Laboratory of Brine Chemical Engineering and Resource Eco-utilization, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, China.
| | - Nan Zhang
- Tianjin Center, China Geological Survey, Tianjin, China.
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Systematic effect of different external metals of hexacyanoferrates on cesium adsorption behavior and mechanism. J Radioanal Nucl Chem 2023. [DOI: 10.1007/s10967-022-08721-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Lv L, Chen C, Hou H, Zhang X, Lan P. Structure analysis and cesium adsorption mechanism evaluation of sodium copper ferrocyanide. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08633-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Zhang X, Alvarado-Ávila MI, Liu Y, Yu D, Ye F, Dutta J. Self-sacrificial growth of hierarchical P(Ni, Co, Fe) for enhanced asymmetric supercapacitors and oxygen evolution reactions. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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