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Conductive Na2Zn2TeO6 Filler Modified Gel Polymer Electrolyte Membranes for Application in Sodium‐Ions Batteries
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-12-28 , DOI: 10.1002/celc.202001298 Xinxin Wang 1 , Zehua Liu 1 , Yingqi Wang 1 , Jingjing Chen 1 , Zhiyong Mao 1 , Dajian Wang 2
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-12-28 , DOI: 10.1002/celc.202001298 Xinxin Wang 1 , Zehua Liu 1 , Yingqi Wang 1 , Jingjing Chen 1 , Zhiyong Mao 1 , Dajian Wang 2
Affiliation
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Gel polymer electrolytes (GPEs) are preferable in energy storage devices, owing to their high ionic conductivity and excellent compatibility with electrodes. In the current work, sodium‐conductive Na2Zn2TeO6 filler modified GPE membranes are fabricated, and their application performances in sodium‐ions batteries (SIBs) are demonstrated. With the modification of Na2Zn2TeO6 filler, the ionic conductivity of the GPEs is enhanced significantly, due to the decreased crystallinity and enlarged porosity of polymer membranes induced by Na2Zn2TeO6 modifier, which itself is a high ionic conductor. The modified GPE membranes exhibit enhanced ionic conductivity as high as 2.52×10−3 S/cm with a low activation energy of approximately 0.040 eV. The assembled Na3V2(PO4)3/C|GPE|Na battery delivers a high first discharge capacity of 93.3 mAh ⋅ g−1 at 0.5 C and promising capacity retention capability (98.4 % after 100 cycles) as well as excellent rate performance (83.5 mAh ⋅ g−1 at 5 C). This work proves that the performances of GPEs can be enhanced with the modification of ionic conductors similar to Na2Zn2TeO6, promoting the application of GPEs in energy storage devices.
中文翻译：
用于钠离子电池的导电性Na2Zn2TeO6填充改性凝胶聚合物电解质膜
凝胶聚合物电解质（GPE）由于其高离子传导性和与电极的优异相容性而在能量存储装置中是优选的。在目前的工作中，制备了钠导电Na 2 Zn 2 TeO 6填料改性的GPE膜，并证明了它们在钠离子电池（SIB）中的应用性能。通过修饰Na 2 Zn 2 TeO 6填料，由于Na 2 Zn 2 TeO 6引起的聚合物膜的结晶度降低和孔隙率增大，GPE的离子电导率显着提高。改性剂，其本身是高离子导体。改性的GPE膜表现出增强的离子电导率，高达2.52×10 -3 S / cm，具有约0.040eV的低活化能。组装好的Na 3 V 2（PO 4）3 / C | GPE | Na电池在0.5 C时可提供93.3 mAh⋅g -1的高首次放电容量，并具有令人满意的容量保持能力（100次循环后为98.4％），并且性能出色速率性能（5 C时为83.5 mAh⋅g -1）。这项工作证明，通过修饰类似于Na 2 Zn 2 TeO 6的离子导体，可以提高GPE的性能。，促进GPE在储能设备中的应用。
更新日期：2020-12-28
中文翻译：
用于钠离子电池的导电性Na2Zn2TeO6填充改性凝胶聚合物电解质膜
凝胶聚合物电解质（GPE）由于其高离子传导性和与电极的优异相容性而在能量存储装置中是优选的。在目前的工作中，制备了钠导电Na 2 Zn 2 TeO 6填料改性的GPE膜，并证明了它们在钠离子电池（SIB）中的应用性能。通过修饰Na 2 Zn 2 TeO 6填料，由于Na 2 Zn 2 TeO 6引起的聚合物膜的结晶度降低和孔隙率增大，GPE的离子电导率显着提高。改性剂，其本身是高离子导体。改性的GPE膜表现出增强的离子电导率，高达2.52×10 -3 S / cm，具有约0.040eV的低活化能。组装好的Na 3 V 2（PO 4）3 / C | GPE | Na电池在0.5 C时可提供93.3 mAh⋅g -1的高首次放电容量，并具有令人满意的容量保持能力（100次循环后为98.4％），并且性能出色速率性能（5 C时为83.5 mAh⋅g -1）。这项工作证明，通过修饰类似于Na 2 Zn 2 TeO 6的离子导体，可以提高GPE的性能。，促进GPE在储能设备中的应用。
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