Ultrasmall-sized SnS nanosheets vertically aligned on carbon microtubes for sodium-ion capacitors with high energy density

2019 ◽  
Vol 7 (8) ◽  
pp. 4047-4054 ◽  
Author(s):  
Jing Zhao ◽  
Guiling Wang ◽  
Rong Hu ◽  
Kai Zhu ◽  
Kui Cheng ◽  
...  

In this work, the porous SnS nanosheets with abundant ultra-small nanocrystals aligned on carbon microtubes are designed to achieve good structural stability, remarkable rate capability and high sodium storage capability.

2019 ◽  
Vol 7 (23) ◽  
pp. 14145-14152 ◽  
Author(s):  
Eldho Edison ◽  
Sivaramapanicker Sreejith ◽  
Hao Ren ◽  
Chwee Teck Lim ◽  
Srinivasan Madhavi

High sodium storage capacities and cycling stability achieved via microstructurally engineered Fe–Sn–Sb ternary alloy anodes.


Nanoscale ◽  
2021 ◽  
Vol 13 (37) ◽  
pp. 15781-15788
Author(s):  
Liaona She ◽  
Feng Zhang ◽  
Congying Jia ◽  
Liping Kang ◽  
Qi Li ◽  
...  

Ti2Nb2O9/CNF anode with excellent sodium storage performance is fabricated by electrospinning and carbonization treatment. The assembled Ti2Nb2O9/CNF//AC SIC exhibits a high energy density of 129 W h kg-1 at 75 W kg-1.


2019 ◽  
Vol 7 (45) ◽  
pp. 25985-25992 ◽  
Author(s):  
Ping Li ◽  
Yanan Wang ◽  
Jong Yeob Jeong ◽  
Xiaoming Gao ◽  
Kan Zhang ◽  
...  

A vertically aligned architecture for an electrode is constructed through physical vapor deposition which benefits the charge transport kinetics and leads to an ultrahigh volumetric capacity for sodium ion batteries.


2019 ◽  
Vol 7 (36) ◽  
pp. 20604-20613 ◽  
Author(s):  
Dongxue Wang ◽  
Zhixuan Wei ◽  
Yunxiang Lin ◽  
Nan Chen ◽  
Yu Gao ◽  
...  

Benefiting from the intercalation pseudocapacitance property and structural stability of NASICON-type Na2CrTi(PO4)3@C, the [Active carbon|| Na2CrTi(PO4)3@C] hybrid ion capacitor delivers high energy density as well as superior power density.


2021 ◽  
Vol 860 ◽  
pp. 158431
Author(s):  
Liaona She ◽  
Feng Zhang ◽  
Congying Jia ◽  
Liping Kang ◽  
Qi Li ◽  
...  

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Qiulong Wei ◽  
Qidong Li ◽  
Yalong Jiang ◽  
Yunlong Zhao ◽  
Shuangshuang Tan ◽  
...  

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.


Author(s):  
Yi Zhang ◽  
Wei Zhong ◽  
Pingping Tan ◽  
Shuang Liu ◽  
Yijun Liu ◽  
...  

Transition metal selenides (TMSs) are widely used as anode in sodium-ion batteries (SIBs) due to their good electrical conductivity high energy density. Herein, we reported and prepared a class of...


2019 ◽  
Vol 7 (22) ◽  
pp. 13790-13790 ◽  
Author(s):  
Jing Zhao ◽  
Guiling Wang ◽  
Rong Hu ◽  
Kai Zhu ◽  
Kui Cheng ◽  
...  

Correction for ‘Ultrasmall-sized SnS nanosheets vertically aligned on carbon microtubes for sodium-ion capacitors with high energy density’ by Jing Zhao et al., J. Mater. Chem. A, 2019, 7, 4047–4054.


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