Nanoscaled Na3PS4 Solid Electrolyte for All-Solid-State FeS2/Na Batteries with Ultrahigh Initial Coulombic Efficiency of 95% and Excellent Cyclic Performances

被引：76

作者：

Wan, Hongli ^{[1
,3
]}

Mwizerwa, Jean Pierre ^{[1
,3
]}

Qi, Xingguo ^{[2
,3
]}

Xu, Xiaoxiong ^{[1
]}

Li, Hong ^{[2
]}

Zhang, Qiang ^{[1
,3
]}

Cai, Liangting ^{[1
]}

Hu, Yong-Sheng ^{[2
]}

Yao, Xiayin ^{[1
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

[2] Chinese Acad Sci, Key Lab Renewable Energy, Beijing Key Lab New Energy Mat & Devices, Beijing Natl Lab Condensed Matter Phys,Inst Phys, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 15期

关键词：

all-solid-state sodium battery; liquid-phase method; nanoscaled Na3PS4 electrolyte; Coulombic efficiency; cycling stability; interfacial contact; ION BATTERIES;

D O I：

10.1021/acsami.8b01805

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nanosized Na3PS4 solid electrolyte with an ionic conductivity of 8.44 x 10(-5) S cm(-1) at room temperature is synthesized by a liquid-phase reaction. The resultant all-solid-state FeS2/Na3PS4/Na batteries show an extraordinary high initial Coulombic efficiency of 95% and demonstrate high energy density of 611 Wh kg(-1) at current density of 20 mA g(-1) at room temperature. The outstanding performances of the battery can be ascribed to good interface compatibility and intimate solid-solid contact at FeS2 electrode/nanosized Na3PS4 solid electrolytes interface. Meanwhile, excellent cycling stability is achieved for the battery after cyding at 60 mA g(-1) for 100 cydes, showing a high capacity of 287 mAh g(-1) with the capacity retention of 80%.

引用

页码：12300 / 12304

页数：5

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