Constructing consistent pore microstructures of bacterial cellulose-derived cathode and anode materials for high energy density sodium-ion capacitors

2020 ◽  
Vol 44 (5) ◽  
pp. 1865-1871 ◽  
Author(s):  
Tianyun Zhang ◽  
Fujuan Wang ◽  
Liang Yang ◽  
Hongxia Li ◽  
Jiangtao Chen ◽  
...  
Keyword(s):  
Energy Density ◽  
Bacterial Cellulose ◽  
Anode Materials ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density

Bacterial cellulose-derived cathode and anode with similar carbon microstructure are well match in kinetic for high energy density sodium-ion capacitor.

Interfacial electron modulation of MoS2/black phosphorus heterostructure toward high-rate and high-energy density half/full sodium-ion batteries

2021 ◽  
Author(s):  
Chenrui Zhang ◽  
Tingting Liang ◽  
Huilong Dong ◽  
Junjun Li ◽  
Junyu Shen ◽  
...  
Keyword(s):  
Energy Density ◽  
Volume Expansion ◽  
Anode Materials ◽  
Large Scale ◽  
Electrochemical Reaction ◽  
High Energy ◽  
Sodium Ion ◽  
High Rate ◽  
High Energy Density ◽  
Sodium Ion Batteries

Sodium-ion batteries (SIBs) have been considered as promising candidates for large-scale energy storage. However, viable anode materials still suffer from sluggish electrochemical reaction kinetics and huge volume expansion during cycling,...

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.

Exceeding three-electron reactions in Na3+2xMn1+xTi1-x(PO4)3 NASICON Cathode with High Energy Density for Sodium-ion Batteries

2021 ◽  
Author(s):  
Jiefei Liu ◽  
Kangshou Lin ◽  
Yu Zhou ◽  
Yu Zhou ◽  
Xianhua Hou ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Ionic Conductor ◽  
Sodium Ion ◽  
High Energy Density ◽  
Sodium Ion Batteries ◽  
Nasicon Structure

The sodium super ionic conductor (NASICON) materials are considered as the attractive cathode in sodium-ion batteries. Although the three-electron reactions in Na3MnTi(PO4)3 have greatly enhanced the capacity of NASICON-structure materials,...

A safe, low-cost and high-efficiency presodiation strategy for pouch-type sodium-ion capacitors with high energy density

2021 ◽  
Author(s):  
Congkai Sun ◽  
Xiong Zhang ◽  
Chen Li ◽  
Kai Wang ◽  
Xianzhong Sun ◽  
...  
Keyword(s):  
Energy Density ◽  
High Efficiency ◽  
Low Cost ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density

Electrocatalytic-driven compensation for sodium ion pouch cell with high energy density and long lifespan

2021 ◽  
Author(s):  
Qi Zhang ◽  
Xuan-Wen Gao ◽  
Ying Shi ◽  
Wen-Bin Luo ◽  
Yang Li ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density

Ultrahigh-energy sodium ion capacitors enabled by the enhanced intercalation pseudocapacitance of self-standing Ti2Nb2O9/CNF anodes

Nanoscale ◽  
2021 ◽  
Vol 13 (37) ◽  
pp. 15781-15788
Author(s):  
Liaona She ◽  
Feng Zhang ◽  
Congying Jia ◽  
Liping Kang ◽  
Qi Li ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density ◽  
Ultrahigh Energy ◽  
Storage Performance ◽  
Sodium Storage

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.

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