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DOI	10.1039/c8ee02093k
	Nanostructured multi-block copolymer single-ion conductors for safer high-performance lithium batteries
	Nguyen H.-D.; Kim G.-T.; Shi J.; Paillard E.; Judeinstein P.; Lyonnard S.; Bresser D.; Iojoiu C.
发表日期	2018
ISSN	17545692
起始页码	3298
结束页码	3309
卷号	11 期号:11
英文摘要	The greatest challenges towards the worldwide success of battery-powered electric vehicles revolve around the safety and energy density of the battery. Single-ion conducting polymer electrolytes address both challenges by replacing the flammable and unstable liquid electrolytes and enabling dendrite-free cycling of high-energy lithium metal anodes. To date, however, their commercial use has been hindered by insufficient ionic conductivities at ambient temperature (commonly not exceeding 10-6 S cm-1) and the limited electrochemical stability towards oxidation, in particular when incorporating ether-type building blocks, limiting their application to rather low-voltage cathode materials like LiFePO4. Here, we introduce ether-free, nanostructured multi-block copolymers as single-ion conducting electrolytes, providing high thermal stability and self-extinguishing properties and, if plasticized with ethylene carbonate, ionic conductivities exceeding 10-3 S cm-1 above 30 °C, i.e., approaching that of state-of-the-art liquid electrolytes. Moreover, these single-ion conducting ionomers present highly reversible lithium cycling for more than 1000 h and, as a result of their excellent electrochemical stability, highly stable cycling of Li[Ni1/3Co1/3Mn1/3]O2 cathodes. To the best of our knowledge, this is the first polymer electrolyte that presents such remarkable ionic conductivity and outstanding electrochemical stability towards both reduction and oxidation, thus, paving the way for advanced high-energy lithium metal batteries. Remarkably, the realization of well-defined continuous ionic domains appears to be the key to efficient charge transport through the electrolyte bulk and across the electrode/electrolyte interface, highlighting the importance of the self-assembling nanostructure. The latter is achieved by carefully (i) designing the copolymer structure, i.e., introducing alternating ionic blocks with a very regular distribution of weakly coordinating anions along the polymer chain and rigid blocks, which are completely immiscible with ethylene carbonate, and (ii) choosing the processing solvent, taking into account its interaction with the different copolymer blocks. © The Royal Society of Chemistry 2018.
英文关键词	Block copolymers; Cathodes; Conducting polymers; Ethers; Ethylene; Ionic conductivity; Ions; Lithium batteries; Lithium compounds; Nanostructures; Secondary batteries; Stability; Battery-powered electric vehicles; Electrochemical stabilities; Electrode/electrolyte interfaces; High thermal stability; Regular distribution; Self-assembling nanostructures; Single ion conductor; Weakly coordinating anions; Polyelectrolytes; electric vehicle; electrochemistry; electrolyte; equipment component; ethylene; lithium; microstructure; oxidation; performance assessment; polymer
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/190075
作者单位	Univ. Grenoble Alpes, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France; Helmholtz Institute Ulm (HIU), Ulm, 89081, Germany; Karlsruhe Institute of Technology (KIT), P.O. Box 3640, Karlsruhe, 76021, Germany; Helmholtz Institute Muenster, Forschungszentrum Juelich (IEK 12), Muenster, 48149, Germany; Adv. Li-ion Battery Eng. Lab. and Key Lab. of Graphene Technol. and Applic. of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang, 315201, China; Laboratoire Léon Brillouin (LLB), CNRS-CEA, Université Paris-Saclay, CEA Saclay, Gif-sur-Yvette Cedex, 91191, France; Univ. Grenoble Alpes, CEA, CNRS, SyMMES, Grenoble, 38000, France
推荐引用方式 GB/T 7714	Nguyen H.-D.,Kim G.-T.,Shi J.,et al. Nanostructured multi-block copolymer single-ion conductors for safer high-performance lithium batteries[J],2018,11(11).
APA	Nguyen H.-D..,Kim G.-T..,Shi J..,Paillard E..,Judeinstein P..,...&Iojoiu C..(2018).Nanostructured multi-block copolymer single-ion conductors for safer high-performance lithium batteries.Energy & Environmental Science,11(11).
MLA	Nguyen H.-D.,et al."Nanostructured multi-block copolymer single-ion conductors for safer high-performance lithium batteries".Energy & Environmental Science 11.11(2018).