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Shinohara T, Kisu K, Dorai A, Zushida K, Yabu H, Takagi S, Orimo SI. Complex Hydride-Based Gel Polymer Electrolytes for Rechargeable Ca-Metal Batteries. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2308318. [PMID: 38958510 DOI: 10.1002/advs.202308318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 06/03/2024] [Indexed: 07/04/2024]
Abstract
Rechargeable Ca batteries offer the advantages of high energy density, low cost, and earth-abundant constituents, presenting a viable alternative to lithium-ion batteries. However, using polymer electrolytes in practical Ca batteries is not often reported, despite its potential to prevent leakage and preserve battery flexibility. Herein, a Ca(BH4)2-based gel-polymer electrolyte (GPE) is prepared from Ca(BH4)2 and poly(tetrahydrofuran) (pTHF) and tested its performance in Ca batteries. The electrolyte demonstrates excellent stability against Ca-metal anodes and high ionic conductivity. The results of infrared spectroscopy and 1H and 11B NMR indicate that the terminal ─OH groups of pTHF reacted with BH4 - anions to form B─H─(pTHF)3 moieties, achieving cross-linking and solidification. Cyclic voltammetry measurements indicate the occurrence of reversible Ca plating/stripping. To improve the performance at high current densities, the GPE is supplemented with LiBH4 to achieve a lower overpotential in the Ca plating/stripping process. An all-solid-state Ca-metal battery with a dual-cation (Ca2+ and Li+) GPE, a Ca-metal anode, and a Li4Ti5O12 cathode sustained >200 cycles, confirming their feasibility. The results pave the way for further developing lithium salt-free Ca batteries by developing electrolyte salts with high oxidation stability and optimal electrochemical properties.
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Affiliation(s)
- Takara Shinohara
- Institute for Materials Research (IMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
- Ichikawa Research Centre, Sumitomo Metal Mining Co. Ltd., Nakakokubun 3-18-5, Ichikawa, Chiba, 272-8588, Japan
| | - Kazuaki Kisu
- Institute for Materials Research (IMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
- College of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo, 135-8548, Japan
| | - Arunkumar Dorai
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
| | - Kenji Zushida
- Institute for Materials Research (IMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
| | - Hiroshi Yabu
- Advanced Institute for Materials Research (AIMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
| | - Shigeyuki Takagi
- Institute for Materials Research (IMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
| | - Shin-Ichi Orimo
- Institute for Materials Research (IMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
- Advanced Institute for Materials Research (AIMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, 980-8577, Japan
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Iurchenkova A, Kobets A, Ahaliabadeh Z, Kosir J, Laakso E, Virtanen T, Siipola V, Lahtinen J, Kallio T. The effect of the pyrolysis temperature and biomass type on the biocarbons characteristics. CHEMSUSCHEM 2023:e202301005. [PMID: 38126627 DOI: 10.1002/cssc.202301005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 12/23/2023]
Abstract
The conversion of biomass and natural wastes into carbon-based materials for various applications such as catalysts and energy-related materials is a fascinating and sustainable approach emerged during recent years. Precursor nature and characteristics are complex, hence, their effect on the properties of resulting materials is still unclear. In this work, we have investigated the effect of different precursors and pyrolysis temperature on the properties of produced carbon materials and their potential application as negative electrode materials in Li-ion batteries. Three biomasses, lignocellulosic brewery spent grain from a local brewery, catechol-rich lignin and tannins, were selected for investigations. We show that such end-product carbon characteristic as functional and elemental composition, porosity, specific surface area, defectiveness level, and morphology strictly depend on the precursor composition, chemical structure, and pyrolysis temperature. The electrochemical characteristics of produced carbon materials correlate with the characteristics of the produced materials. A higher pyrolysis temperature is shown to be favourable for production of carbon material for the Li-ion battery application in terms of both specific capacity and long-term cycling stability.
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Affiliation(s)
- Anna Iurchenkova
- Research Group of Electrochemical Energy Conversion and Storage, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box, 16100, FI-00076, Espoo, Finland
- Nanotechnology and Functional Materials, Department of Materials Science and Engineering, The Ångstrom laboratory, Uppsala University, BOX 35, 75103, Uppsala, Sweden
| | - Anna Kobets
- Research Group of Electrochemical Energy Conversion and Storage, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box, 16100, FI-00076, Espoo, Finland
| | - Zahra Ahaliabadeh
- Research Group of Electrochemical Energy Conversion and Storage, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box, 16100, FI-00076, Espoo, Finland
| | - Janez Kosir
- Research Group of Electrochemical Energy Conversion and Storage, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box, 16100, FI-00076, Espoo, Finland
| | - Ekaterina Laakso
- Research Group of Electrochemical Energy Conversion and Storage, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box, 16100, FI-00076, Espoo, Finland
- LUT University, Yliopistonkatu 34, 53850, Lappeenranta, Finland
| | - Tommi Virtanen
- Bioprocessing of Natural Materials, VTT Technical Research Center of Finland Ltd., P.O. Box 1000, Oulu, FI-, 02044 VTT
| | - Virpi Siipola
- Bioprocessing of Natural Materials, VTT Technical Research Center of Finland Ltd., P.O. Box 1000, Oulu, FI-, 02044 VTT
| | - Jouko Lahtinen
- Department of Applied Physics, School of Science, Aalto University, FI, 02150, Espoo, Finland
| | - Tanja Kallio
- Research Group of Electrochemical Energy Conversion and Storage, Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box, 16100, FI-00076, Espoo, Finland
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