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Beyond PEO—Alternative host materials for Li+-conducting solid polymer electrolytes
Progress in Polymer Science ( IF 27.1 ) Pub Date : 2018-01-03 , DOI: 10.1016/j.progpolymsci.2017.12.004
Jonas Mindemark , Matthew J. Lacey , Tim Bowden , Daniel Brandell

The bulk of the scientific literature on Li-conducting solid (solvent-free) polymer electrolytes (SPEs) for applications such as Li-based batteries is focused on polyether-based materials, not least the archetypal poly(ethylene oxide) (PEO). A significant number of alternative polymer hosts have, however, been explored over the years, encompassing materials such as polycarbonates, polyesters, polynitriles, polyalcohols and polyamines. These display fundamentally different properties to those of polyethers, and might therefore be able to resolve the key issues restricting SPEs from realizing their full potential, for example in terms of ionic conductivity, chemical or electrochemical stability and temperature sensitivity. It is further interesting that many of these polymer materials complex Li ions less strongly than PEO and facilitate ion transport through different mechanisms than polyethers, which is likely critical for true advancement in the area. In this review, >30 years of research on these ‘alternative’ Li-ion-conducting SPE host materials are summarized and discussed in the perspective of their potential application in electrochemical devices, with a clear focus on Li batteries. Key challenges and strategies forward and beyond the current PEO-based paradigm are highlighted.



中文翻译:

超越PEO-导电锂+固体聚合物电解质的替代主体材料

关于诸如锂基电池之类的应用中的锂导电固体(无溶剂)聚合物电解质(SPE)的大部分科学文献都集中在聚醚基材料上,尤其是原型聚环氧乙烷(PEO)。然而,多年来,已经探索了许多可供选择的聚合物主体,涵盖了诸如聚碳酸酯,聚酯,聚腈,多元醇和多胺等材料。它们显示出与聚醚根本不同的性质,因此可能能够解决限制SPE实现其全部潜能的关键问题,例如在离子电导率,化学或电化学稳定性和温度敏感性方面。进一步令人感兴趣的是,这些聚合物中的许多与LiO相比,与LiO的结合力弱,并且通过与聚醚不同的机理促进了离子的迁移,这对于该领域的真正发展至关重要。在这篇综述中,对这些“替代”的传导锂离子的SPE主体材料进行了超过30年的研究,并从其在电化学装置中的潜在应用的角度出发进行了总结和讨论,其中重点明确地放在了锂电池上。重点介绍了当前基于PEO的范例之外的主要挑战和策略。总结和讨论了这些“替代”的传导锂离子SPE主体材料的30年研究,并从它们在电化学设备中的潜在应用的角度出发进行了讨论,其中重点明确放在了锂电池上。重点介绍了当前基于PEO的范例之外的主要挑战和策略。总结和讨论了这些“替代”的传导锂离子SPE主体材料的30年研究,并从其在电化学装置中的潜在应用的角度出发进行了讨论,其中重点明确放在了锂电池上。重点介绍了当前基于PEO的范例之外的主要挑战和策略。

更新日期:2018-01-03
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