Yichun Zhao, Lin Fan, Biao Xiao, Shaojun Cai, Jingchao Chai, Xueqing Liu, Jiyan Liu, Zhihong Liu
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引用次数: 0
摘要
在混合固体电解质中构建具有快速锂离子通道的连续多相渗流通道具有重要意义。三维陶瓷纳米结构框架在该领域引起了极大的关注。在此，通过简单的同轴电纺丝工艺和800℃的煅烧工艺制备了三维钙钛矿Li0.33La0.557TiO3纳米管骨架（3D‐LLTO‐NT） °C。3D‐LLTO‐NT骨架和聚碳酸亚乙酯（3D‐LLTO-NT@PEC)显示出1.73的改进的离子电导率 × 10−4 S 在环境温度下为cm−1，较高的锂离子迁移数（tLi+）为0.78，电化学稳定性窗口高达5.0 V vs李/李+。LiFePO4/3D LLTO的全固态电池NT@PEC/李提供了140.2的高比容量 毫安时 g−1，环境温度为0.1摄氏度。这种出色的性能归功于3D陶瓷纳米管框架，它提供了快速的锂离子转移途径和稳定的界面。
Preparing 3D Perovskite Li0.33La0.557TiO3 Nanotubes Framework Via Facile Coaxial Electro-Spinning Towards Reinforced Solid Polymer Electrolyte
It is of significance to construct continuous multiphase percolation channels with fast lithium-ion pathway in hybrid solid electrolytes. 3D ceramic nanostructure frameworks have attracted great attention in this field. Herein, the three-dimensional perovskite Li0.33La0.557TiO3 nanotubes framework (3D-LLTO-NT) is fabricated via a facile coaxial electro-spinning process followed by a calcination process at 800 °C. The hybrid polymer electrolyte of 3D-LLTO-NT framework and poly (ethylene carbonate) (3D-LLTO-NT@PEC) shows improved ionic conductivity of 1.73 × 10−4 S cm−1 at ambient temperature, higher lithium-ion transference number (tLi+) of 0.78 and electrochemical stability window up to 5.0 V vs Li/Li+. The all-solid-state cell of LiFePO4/3D-LLTO-NT@PEC/Li delivers a high specific capacity of 140.2 mAh g−1 at 0.1 C at ambient temperature. This outstanding performance is attributed to the 3D ceramic nanotubes frameworks which provide fast lithium ion transfer pathway and stable interfaces.
期刊介绍：
Energy & Environmental Materials (EEM) is an international journal published by Zhengzhou University in collaboration with John Wiley & Sons, Inc. The journal aims to publish high quality research related to materials for energy harvesting, conversion, storage, and transport, as well as for creating a cleaner environment. EEM welcomes research work of significant general interest that has a high impact on society-relevant technological advances. The scope of the journal is intentionally broad, recognizing the complexity of issues and challenges related to energy and environmental materials. Therefore, interdisciplinary work across basic science and engineering disciplines is particularly encouraged. The areas covered by the journal include, but are not limited to, materials and composites for photovoltaics and photoelectrochemistry, bioprocessing, batteries, fuel cells, supercapacitors, clean air, and devices with multifunctionality. The readership of the journal includes chemical, physical, biological, materials, and environmental scientists and engineers from academia, industry, and policy-making.
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