Details

Autor(en) / Beteiligte

• Wan, Hongli
• Mwizerwa, Jean Pierre
• Qi, Xingguo
• Xu, Xiaoxiong
• Li, Hong
• Zhang, Qiang
• Cai, Liangting
• Hu, Yong-Sheng
• Yao, Xiayin

Titel

Nanoscaled Na 3 PS 4 Solid Electrolyte for All-Solid-State FeS 2 /Na Batteries with Ultrahigh Initial Coulombic Efficiency of 95% and Excellent Cyclic Performances

Ist Teil von

• ACS applied materials & interfaces, 2018-04, Vol.10 (15), p.12300-12304

Ort / Verlag

United States

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

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