Directed and Continuous Interfacial Channels for Optimized Ion Transport in Solid-State Electrolytes

Xu Wang; Sipeng Huang; Kang GuoYulin MinQunjie Xu

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Directed and Continuous Interfacial Channels for Optimized Ion Transport in Solid-State Electrolytes

机译：Directed and Continuous Interfacial Channels for Optimized Ion Transport in Solid-State Electrolytes

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The traditional strategy of using polymer solid electrolyte composite fillers isextremely limited by the continuity of the organic-inorganic interface. Herein,a new composite electrolyte is fabricated, wherein alternating layers oforganic polyethylene oxide (PEO) and inorganic molybdenum trioxide (MoO3)nanobelts are prepared and then the multilayer film is rolled and sliced intodisks. Compared with a similar electrolyte prepared by disordered blending,the electrolyte here has a mesoscopic continuous organic-inorganic interfaceperpendicular to the electrode direction. The ionic conductivity increasesfrom 4.88 × 10~(?4) to 1.16 × 10~(?3) S cm~(?1). The “interfacial battery” can operatestably over >2000 charge–discharge cycles at 2 C (60 ℃), and can withstandrapid charging–discharging, even at 10 C. Theoretical calculation resultsshow that this unique assembly method essentially eliminates the energyband gap between the PEO and MoO_3 interface, and promotes lithium ion(Li+) transport. In addition, the electronic interaction between the orbital ofMo and PEO extends the lattice structure of PEO, resulting in a reductionin the crystallinity, which further improves the battery performance. Thisstudy provides a composite electrolyte design that is different from blendingand represents a new strategy for the development of low-cost superionicconductors.

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来源
《Advanced functional materials》 |2022年第49期|2206976.1-2206976.13|共13页
作者
Xu Wang; Sipeng Huang; Kang GuoYulin MinQunjie Xu;
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作者单位

Shanghai Key Laboratory of Materials Protection andAdvanced Materials Electric PowerShanghai Engineering Research Center of Energy-Savingin Heat Exchange SystemsShanghai University of Electric PowerShanghai 200090, P. R. China;

Shanghai Key Laboratory of Materials Protection andAdvanced Materials Electric PowerShanghai Engineering Research Center of Energy-Savingin Heat Exchange SystemsShanghai University of Electric PowerShanghai 200090, P. R. China State Key Laboratory of Poll;

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正文语种英语
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directed and continuous interfacial groups; organic-inorganic interfaces; polymer composite electrolytes; solid-state lithium batteries;

Directed and Continuous Interfacial Channels for Optimized Ion Transport in Solid-State Electrolytes

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