期刊详情

首页 > 期刊首页 > 碳能源（英文） > 2023年12期 > Pressureless all-solid-state Na/S batteries with self-supporting Na5YSi4O12 scaffolds

Pressureless all-solid-state Na/S batteries with self-supporting Na5YSi4O12 scaffolds

摘要 The development of reliable and affordable all-solid-state sodium metal batteries(ASS-SMBs)requires suitable solid-state electrolytes with cost-efficient processing and stabilized electrode/electrolyte interfaces.Here,an integrated porous/dense/porous Na5YSi4O12(NYS)trilayered scaffold is designed and fabricated by tape casting using aqueous slurries.In this template-based NYS scaffold,the dense layer in the middle serves as a separator and the porous layers on both sides accommodate the active materials with their volume changes during the charge/discharge processes,increasing the contact area and thus enhancing the utilization rate and homogenizing the current distribution.The Na/NYS/Na symmetric cells with the Pb-coated NYS scaffold exhibit significantly reduced interfacial impedance and superior critical current density of up to 3.0 mA cm-2 against Na metal owing to enhanced wettability.Furthermore,the assembled Na/NYS/S full cells operated without external pressure at room temperature showed a high initial discharge capacity of 970 mAh g-1 and good cycling stability with a capacity of 600 mAh g-1 after 150 cycles(based on the mass of sulfur).This approach paves the way for the realization of economical and practical ASS-SMBs from the perspective of ceramic manufacturing.

doi： 10.1002/cey2.371

作者： Aikai Yang Ruijie Ye Huimin Song Qiongqiong Lu Xingchao Wang Enkhtsetseg Dashjav Kai Yao Daniel Grüner Qianli Ma Frank Tietz Olivier Guillon

Author： Aikai Yang Ruijie Ye Huimin Song Qiongqiong Lu Xingchao Wang Enkhtsetseg Dashjav Kai Yao Daniel Grüner Qianli Ma Frank Tietz Olivier Guillon

作者单位： Forschungszentrum Jülich GmbH,Institute of Energy and Climate Research(IEK-1),Jülich,Germany Institute of Mineral Engineering(GHI),RWTH Aachen University,Aachen,Germany Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials,School of Materials Science and Engineering,Peking University,Beijing,China Institute of Materials,Henan Academy of Sciences,Zhengzhou,Henan,China Henan Key Laboratory of Advanced Conductor Materials,Zhengzhou,Henan,China State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources,Key Laboratory of Advanced Functional Materials,Autonomous Region,Institute of Applied Chemistry,College of Chemistry,Xinjiang University,Urumqi,Xinjiang,China Forschungszentrum Jülich GmbH,Institute of Energy and Climate Research(IEK-2),Jülich,Germany Jülich Aachen Research Alliance,JARA-Energy,Jülich,Germany

刊名碳能源（英文） SCI

年，卷(期)： 2023, 5(12)

Keywords Na/S batteries Na5YSi4O12 scaffold solid-state electrolytes tape casting

机标分类号： H0-05 G633.41 G23

在线出版日期： 2024年4月25日

相关知识