气候变化领域集成服务门户(CCPortal): Hybrid electrolytes with 3D bicontinuous ordered ceramic and polymer microchannels for all-solid-state batteries

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DOI	10.1039/c7ee02723k
	Hybrid electrolytes with 3D bicontinuous ordered ceramic and polymer microchannels for all-solid-state batteries
	Zekoll S.; Marriner-Edwards C.; Hekselman A.K.O.; Kasemchainan J.; Kuss C.; Armstrong D.E.J.; Cai D.; Wallace R.J.; Richter F.H.; Thijssen J.H.J.; Bruce P.G.
发表日期	2018
ISSN	17545692
起始页码	185
结束页码	201
卷号	11 期号:1
英文摘要	Hybrid solid electrolytes, composed of 3D ordered bicontinuous conducting ceramic and insulating polymer microchannels are reported. The ceramic channels provide continuous, uninterrupted pathways, maintaining high ionic conductivity between the electrodes, while the polymer channels permit improvement of the mechanical properties from that of the ceramic alone, in particular mitigation of the ceramic brittleness. The conductivity of a ceramic electrolyte is usually limited by resistance at the grain boundaries, necessitating dense ceramics. The conductivity of the 3D ordered hybrid is reduced by only the volume fraction occupied by the ceramic, demonstrating that the ceramic channels can be sintered to high density similar to a dense ceramic disk. The hybrid electrolytes are demonstrated using the ceramic lithium ion conductor Li1.4Al0.4Ge1.6(PO4)3 (LAGP). Structured LAGP 3D scaffolds with empty channels were prepared by negative replication of a 3D printed polymer template. Filling the empty channels with non-conducting polypropylene (PP) or epoxy polymer (epoxy) creates the structured hybrid electrolytes with 3D bicontinuous ceramic and polymer microchannels. Printed templating permits precise control of the ceramic to polymer ratio and the microarchitecture; as demonstrated by the formation of cubic, gyroidal, diamond and spinodal (bijel) structures. The electrical and mechanical properties depend on the microarchitecture, the gyroid filled with epoxy giving the best combination of conductivity and mechanical properties. An ionic conductivity of 1.6 × 10-4 S cm-1 at room temperature was obtained, reduced from the conductivity of a sintered LAGP pellet only by the volume fraction occupied by the ceramic. The mechanical properties of the gyroid LAGP-epoxy electrolyte demonstrate up to 28% higher compressive failure strain and up to five times the flexural failure strain of a LAGP pellet before rupture. Notably, this demonstrates that ordered ceramic and polymer hybrid electrolytes can have superior mechanical properties without significantly compromising ionic conductivity, which addresses one of the key challenges for all-solid-state batteries. © The Royal Society of Chemistry.
英文关键词	3D printers; Aluminum compounds; Ceramic materials; Computer architecture; Electric batteries; Electrolytes; Failure (mechanical); Fracture mechanics; Germanium compounds; Grain boundaries; Ionic conduction in solids; Ionic conductivity; Lithium compounds; Lithium-ion batteries; Mechanical properties; Microchannels; Pelletizing; Polyelectrolytes; Polymers; Polypropylenes; Scaffolds; Sintering; Solid state devices; Strain; Volume fraction; All-solid state batteries; Compressive failure; Electrical and mechanical properties; Hybrid electrolytes; Insulating polymer; Lithium ion conductors; Micro architectures; Polymer microchannel; Solid electrolytes; diamond; electrolyte; lithium; mechanical property; polymer; temperature; three-dimensional modeling
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190336
作者单位	Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United Kingdom; SUPA School of Physics and Astronomy, University of Edinburgh, Edinburgh, EH9 3FD, United Kingdom; Department of Orthopaedics, University of Edinburgh, Edinburgh, EH16 4SB, United Kingdom; Department of Materials, Imperial College London, London, SW7 2AZ, United Kingdom; Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, 30 South PuZhu Road, Nanjing, Jiangsu, 211816, China; Physikalisch-Chemisches Institut, Justus-Liebig-Universität Gießen, Gießen, 35392, Germany
推荐引用方式 GB/T 7714	Zekoll S.,Marriner-Edwards C.,Hekselman A.K.O.,et al. Hybrid electrolytes with 3D bicontinuous ordered ceramic and polymer microchannels for all-solid-state batteries[J],2018,11(1).
APA	Zekoll S..,Marriner-Edwards C..,Hekselman A.K.O..,Kasemchainan J..,Kuss C..,...&Bruce P.G..(2018).Hybrid electrolytes with 3D bicontinuous ordered ceramic and polymer microchannels for all-solid-state batteries.Energy & Environmental Science,11(1).
MLA	Zekoll S.,et al."Hybrid electrolytes with 3D bicontinuous ordered ceramic and polymer microchannels for all-solid-state batteries".Energy & Environmental Science 11.1(2018).