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Yang R, Zhang Z, Zhang Q, Shi J, Kang S, Fan Y. Flexible Asymmetric Organic-Inorganic Composite Solid-State Electrolyte Based on PI Membrane for Ambient Temperature Solid-State Lithium Metal Batteries. Front Chem 2022; 10:855800. [PMID: 35402381 PMCID: PMC8985409 DOI: 10.3389/fchem.2022.855800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
Solid-state lithium metal batteries have attracted more and more attention in recent years because of their high safety and energy density, with developments in the new energy industry and energy storage industry. However, solid-state electrolytes are usually symmetric and are not compatible with the cathode and anode at once. In this work, a flexible asymmetric organic-inorganic composite solid-state electrolyte consisting of PI membrane, succinonitrile (SN), LiLaZrTaO(LLZTO), Poly (ethylene glycol) (PEO), and LiTFSI were prepared by solution casting successfully. This lightweight solid electrolyte is stable at a high temperature of 150°C and exhibits a wide electrochemical window of more than 6 V. Furthermore, the high ionic conductivity of the flexible solid electrolyte was 7.3 × 10−7 S/cm. The solid-state batteries assembled with this flexible asymmetric organic-inorganic composite solid electrolyte exhibit excellent performance at ambient temperature. The specific discharge capacity of coin cells using asymmetric organic-inorganic composite solid-state electrolytes was 156.56 mAh/g, 147.25 mAh/g, and 66.55 mAh/g at 0.1, 0.2, and 1C at room temperature. After 100 cycles at 0.2C, the reversible discharging capacity was 96.01 mAh/g, and Coulombic efficiency was 98%. Considering the good performance mentioned above, our designed flexible asymmetric organic-inorganic composite solid electrolyte is appropriate for next-generation solid-state batteries with high cycling stability.
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Affiliation(s)
- Ruilu Yang
- Analysis and Testing Center, Nantong University, Nantong, China
| | - Zheng Zhang
- Analysis and Testing Center, Nantong University, Nantong, China
| | - Qi Zhang
- Analysis and Testing Center, Nantong University, Nantong, China
| | - Jian Shi
- Analysis and Testing Center, Nantong University, Nantong, China
- *Correspondence: Jian Shi, ; Shusen Kang, ; Yanchen Fan,
| | - Shusen Kang
- SUSTeach Academy for Advanced Interdisciplinary Studies and Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, China
- *Correspondence: Jian Shi, ; Shusen Kang, ; Yanchen Fan,
| | - Yanchen Fan
- SUSTeach Academy for Advanced Interdisciplinary Studies and Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, China
- *Correspondence: Jian Shi, ; Shusen Kang, ; Yanchen Fan,
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Yuan Z, Hu Z, Gao P, Zhang W, Tang Y, Li L, Shi K, Han S, Fan C, Liu J, Liu J. Graphitic carbon nitride-derived high lithium storage capacity graphite material with regular layer structure and the structural evolution mechanism. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.139985] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Politi S, Carcione R, Tamburri E, Matassa R, Lavecchia T, Angjellari M, Terranova ML. Graphene platelets from shungite rock modulate electropolymerization and charge storage mechanisms of soft-template synthetized polypyrrole-based nanocomposites. Sci Rep 2018; 8:17045. [PMID: 30451974 PMCID: PMC6242989 DOI: 10.1038/s41598-018-35415-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/02/2018] [Indexed: 01/16/2023] Open
Abstract
We report here on soft-template electropolymerizations of polypyrrole (Ppy)-based nanocomposites triggered by graphene platelets (GP) from shungite (SH) rocks. A properly designed procedure for an efficient extraction of graphene platelets from SH powders is established to produce remarkable graphene materials in a low oxidation state and with a high electrical conductivity (1490 S cm-1). By using positively and negatively charged templating surfactants the role played by the graphene units on the electropolymerization reactions is pointed out by SEM, EDX, TEM, SAED, XPS and Raman spectroscopy. The morphological/structural characterizations highlight that GP from SH have a surface chemistry suitable for selective and mutual interactions with the growing Ppy chains. CV and galvanostatic charge/discharge measurements evidence that GP improve the transport of both electrons and ions within the bulk material by means of a synergistic action with the polymer phase. This cooperative behavior induces an enhancement of the specific capacitance up to 250 F g-1 at 2 A g-1. The Ppy-GP materials produced following the settled protocols result to be appropriate for fabricating multifunctional charge transport and storage electroactive systems.
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Affiliation(s)
- Sara Politi
- Dip. to di Scienze e Tecnologie Chimiche, Università degli Studi di Roma "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Rocco Carcione
- Dip. to di Scienze e Tecnologie Chimiche, Università degli Studi di Roma "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Emanuela Tamburri
- Dip. to di Scienze e Tecnologie Chimiche, Università degli Studi di Roma "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy.
| | - Roberto Matassa
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A, Borelli 50, Rome, Italy
| | - Teresa Lavecchia
- Dip. to di Scienze e Tecnologie Chimiche, Università degli Studi di Roma "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Mariglen Angjellari
- Dip. to di Scienze e Tecnologie Chimiche, Università degli Studi di Roma "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy
| | - Maria Letizia Terranova
- Dip. to di Scienze e Tecnologie Chimiche, Università degli Studi di Roma "Tor Vergata", Via della Ricerca Scientifica, 00133, Rome, Italy
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