scholarly journals Anode Materials: Nanosheets‐Assembled CuSe Crystal Pillar as a Stable and High‐Power Anode for Sodium‐Ion and Potassium‐Ion Batteries (Adv. Energy Mater. 20/2019)

2019 ◽  
Vol 9 (20) ◽  
pp. 1970073
Author(s):  
Hezhe Lin ◽  
Malin Li ◽  
Xu Yang ◽  
Dongxu Yu ◽  
Yi Zeng ◽  
...  
Keyword(s):  
High Power ◽  
Anode Materials ◽  
Potassium Ion ◽  
Sodium Ion ◽  
Energy Mater

Co-construction of sulfur vacancies and carbon confinement in V5S8/CNFs to induce an ultra-stable performance for half/full sodium-ion and potassium-ion batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Lihong Xu ◽  
Xiaochuan Chen ◽  
Wenti Guo ◽  
Lingxing Zeng ◽  
Tao Yang ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Anode Materials ◽  
High Energy ◽  
Potassium Ion ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Vanadium Sulfide ◽  
Stable Performance

To construct anode materials for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) with high energy, and long lifespan is significant and still challenging. Here, sulfur-defective vanadium sulfide/carbon fibers composite (D-V5S8/CNFs)...

Nanosheets‐Assembled CuSe Crystal Pillar as a Stable and High‐Power Anode for Sodium‐Ion and Potassium‐Ion Batteries

2019 ◽  
Vol 9 (20) ◽  
pp. 1900323 ◽  
Author(s):  
Hezhe Lin ◽  
Malin Li ◽  
Xu Yang ◽  
Dongxu Yu ◽  
Yi Zeng ◽  
...  
Keyword(s):  
High Power ◽  
Potassium Ion ◽  
Sodium Ion

Yolk-Shell Structured CoSe2/C Nanospheres as Multifunctional Anode Materials for Both Full/Half Sodium-Ion and Full/Half Potassium-Ion Batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Xiuping Sun ◽  
Suyuan Zeng ◽  
Ruxia Man ◽  
Lu Wang ◽  
Bo Zhang ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Transition Metal ◽  
Anode Materials ◽  
Potassium Ion ◽  
Sodium Ion ◽  
Large Radius ◽  
Metal Selenides

Transition metal selenides (TMSs) are suitable for SIBs and PIBs owing to their satisfactory theoretical capacity and superior electrical conductivity. However, the large radius of Na+/K+ easily arouses the sluggish...

scholarly journals High-Energy and High-Power Pseudocapacitor–Battery Hybrid Sodium-Ion Capacitor with Na+ Intercalation Pseudocapacitance Anode

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Qiulong Wei ◽  
Qidong Li ◽  
Yalong Jiang ◽  
Yunlong Zhao ◽  
Shuangshuang Tan ◽  
...  
Keyword(s):  
Energy Density ◽  
High Power ◽  
Anode Materials ◽  
High Performance ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Rate Capability ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density

AbstractHigh-performance and low-cost sodium-ion capacitors (SICs) show tremendous potential applications in public transport and grid energy storage. However, conventional SICs are limited by the low specific capacity, poor rate capability, and low initial coulombic efficiency (ICE) of anode materials. Herein, we report layered iron vanadate (Fe5V15O39 (OH)9·9H2O) ultrathin nanosheets with a thickness of ~ 2.2 nm (FeVO UNSs) as a novel anode for rapid and reversible sodium-ion storage. According to in situ synchrotron X-ray diffractions and electrochemical analysis, the storage mechanism of FeVO UNSs anode is Na+ intercalation pseudocapacitance under a safe potential window. The FeVO UNSs anode delivers high ICE (93.86%), high reversible capacity (292 mAh g−1), excellent cycling stability, and remarkable rate capability. Furthermore, a pseudocapacitor–battery hybrid SIC (PBH-SIC) consisting of pseudocapacitor-type FeVO UNSs anode and battery-type Na3(VO)2(PO4)2F cathode is assembled with the elimination of presodiation treatments. The PBH-SIC involves faradaic reaction on both cathode and anode materials, delivering a high energy density of 126 Wh kg−1 at 91 W kg−1, a high power density of 7.6 kW kg−1 with an energy density of 43 Wh kg−1, and 9000 stable cycles. The tunable vanadate materials with high-performance Na+ intercalation pseudocapacitance provide a direction for developing next-generation high-energy capacitors.

Pseudocapacitive Anode Materials toward High‐Power Sodium‐Ion Capacitors

2021 ◽  
Author(s):  
Xiaoqing Chang ◽  
Tingyi Huang ◽  
Jiayu Yu ◽  
Junbin Li ◽  
Jian Wang ◽  
...  
Keyword(s):  
High Power ◽  
Anode Materials ◽  
Sodium Ion
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