Polymer Precursor Derived LixPON Electrolytes: Toward Li-S Batteries.,ACS Applied Materials & Interfaces

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Polymer Precursor Derived LixPON Electrolytes: Toward Li-S Batteries.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-23 , DOI: 10.1021/acsami.0c03341
Eleni Temeche ₁ , Xinyu Zhang ₁ , Richard M Laine ₁

Affiliation

Efforts to develop polymer precursor electrolytes that offer properties anticipated to be similar or superior to (lithium phosphorus oxynitride, LiPON) glasses are reported. Such precursors offer the potential to be used to process LiPON-like thin glass/ceramic coatings for use in all solid state batteries, ASBs. Here, LiPON glasses provide a design basis for the synthesis of sets of oligomers/polymers by lithiation of OP(NH2)3-x(NH)x [from OP(NH)3],OP(NH2)3-x(NHSiMe3)x and [P═N]3(NHSiMe3)6-x(NH)x. The resulting systems have degrees of polymerization of 5-20. Treatment with selected amounts of LiNH2 provides varying degrees of lithiation and Li+ conducting properties commensurate with Li+ content. Polymer electrolytes impregnated in/on Celgard exhibit Li+ conductivities up to ∼1 × 10-5S cm-1 at room temperature and are thermally stable to ∼150 °C. A Li-S battery assembled using a Li6SiPON composition polymer electrolyte exhibits an initial reversible capacity of 1500 mAh gsulfur-1 and excellent cycle performance at 0.25 and 0.5 C rate over 120 cycles at room temperature.

中文翻译：

聚合物前体衍生的LixPON电解质：走向Li-S电池。

据报道，开发了聚合物前体电解质的努力，该电解质提供的性能预期与（氮氧化锂磷，LiPON）玻璃相似或更好。此类前体提供了潜力，可用于加工用于所有固态电池ASB的类LiPON的薄玻璃/陶瓷涂层。在这里，LiPON玻璃为通过OP（NH2）3-x（NH）x [来自OP（NH）3]，OP（NH2）3-x（NHSiMe3）的锂化合成低聚物/聚合物组提供了设计基础。 x和[P═N] 3（NHSiMe 3）6 -x（NH）x。所得体系的聚合度为5-20。用选定量的LiNH2处理可提供不同程度的锂化和与Li +含量相当的Li +导电性能。浸渍在Celgard中/上的聚合物电解质在室温下显示的Li +电导率高达〜1×10-5S cm-1，并且在约150°C的温度下具有热稳定性。

更新日期：2020-04-13

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