scholarly journals Solvent-Dictated Sodium Sulfur Redox Reactions: Investigation of Carbonate and Ether Electrolytes

Energies ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 836 ◽  
Author(s):  
Huang Zhang ◽  
Thomas Diemant ◽  
Bingsheng Qin ◽  
Huihua Li ◽  
R. Jürgen Behm ◽  
...  
Keyword(s):  
Room Temperature ◽  
High Energy ◽  
High Energy Density ◽  
Phase Reaction ◽  
Energy Potential ◽  
Redox Kinetics ◽  
Electrochemical Reversibility ◽  
Sodium Sulfur ◽  
Kinetics Of ◽  
Insight Into

Sulfur-based cathode chemistries are essential for the development of high energy density alkali-ion batteries. Here, we elucidate the redox kinetics of sulfur confined on carbon nanotubes, comparing its performance in ether-based and carbonate-based electrolytes at room temperature. The solvent is found to play a key role for the electrochemical reactivity of the sulfur cathode in sodium–sulfur (Na–S) batteries. Ether-based electrolytes contribute to a more complete reduction of sulfur and enable a higher electrochemical reversibility. On the other hand, an irreversible solution-phase reaction is observed in carbonate solvents. This study clearly reveals the solvent-dependent Na–S reaction pathways in room temperature Na–S batteries and provides an insight into realizing their high energy potential, via electrolyte formulation design.

scholarly journals Research Progress toward Room Temperature Sodium Sulfur Batteries: A Review

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1535
Author(s):  
Yanjie Wang ◽  
Yingjie Zhang ◽  
Hongyu Cheng ◽  
Zhicong Ni ◽  
Ying Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Room Temperature ◽  
High Energy ◽  
Safety Performance ◽  
High Energy Density ◽  
Research Progress ◽  
Storage Performance ◽  
Sulfur Battery ◽  
Sodium Sulfur Battery ◽  
Sodium Sulfur

Lithium metal batteries have achieved large-scale application, but still have limitations such as poor safety performance and high cost, and limited lithium resources limit the production of lithium batteries. The construction of these devices is also hampered by limited lithium supplies. Therefore, it is particularly important to find alternative metals for lithium replacement. Sodium has the properties of rich in content, low cost and ability to provide high voltage, which makes it an ideal substitute for lithium. Sulfur-based materials have attributes of high energy density, high theoretical specific capacity and are easily oxidized. They may be used as cathodes matched with sodium anodes to form a sodium-sulfur battery. Traditional sodium-sulfur batteries are used at a temperature of about 300 °C. In order to solve problems associated with flammability, explosiveness and energy loss caused by high-temperature use conditions, most research is now focused on the development of room temperature sodium-sulfur batteries. Regardless of safety performance or energy storage performance, room temperature sodium-sulfur batteries have great potential as next-generation secondary batteries. This article summarizes the working principle and existing problems for room temperature sodium-sulfur battery, and summarizes the methods necessary to solve key scientific problems to improve the comprehensive energy storage performance of sodium-sulfur battery from four aspects: cathode, anode, electrolyte and separator.

scholarly journals High-performance room-temperature sodium–sulfur battery enabled by electrocatalytic sodium polysulfides full conversion

2020 ◽  
Vol 13 (2) ◽  
pp. 562-570 ◽  
Author(s):  
Nana Wang ◽  
Yunxiao Wang ◽  
Zhongchao Bai ◽  
Zhiwei Fang ◽  
Xiao Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Room Temperature ◽  
Gold Nanoclusters ◽  
High Energy ◽  
High Energy Density ◽  
Sulfur Battery ◽  
Sodium Sulfur Battery ◽  
Sodium Sulfur ◽  
Full Conversion

Developing novel gold nanoclusters as an electrocatalyst can facilitate a completely reversible reaction between S and Na, achieving advanced high-energy-density room-temperature sodium–sulfur batteries.

scholarly journals High energy density MnO4−/MnO42− redox couple for alkaline redox flow batteries

2016 ◽  
Vol 52 (97) ◽  
pp. 14039-14042 ◽  
Author(s):  
Alejandro N. Colli ◽  
Pekka Peljo ◽  
Hubert H. Girault
Keyword(s):  
Energy Density ◽  
Redox Potential ◽  
Room Temperature ◽  
High Energy ◽  
Redox Couple ◽  
High Energy Density ◽  
High Solubility ◽  
Redox Flow Batteries ◽  
Electrochemical Reversibility ◽  
Flow Batteries

The MnO4−/MnO42− redox couple has a positive redox potential, high electrochemical reversibility and high solubility, up to 3.62 M at room temperature.

Enabling high-performance room-temperature sodium/sulfur batteries with few-layer 2H-MoSe2 embellished nitrogen-doped hollow carbon spheres as polysulfide barrier

2021 ◽  
Author(s):  
Chunwei Dong ◽  
HongYu Zhou ◽  
Bo Jin ◽  
Wang Gao ◽  
Xingyou Lang ◽  
...  
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Electrode Materials ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Widespread Application ◽  
Earth Abundant ◽  
Hollow Carbon ◽  
Sodium Sulfur

Room-temperature sodium/sulfur (RT-Na/S) batteries are of considerable interest for next-generation energy storage systems because of the earth-abundant electrode materials, low cost, and high energy density. However, the widespread application of...

scholarly journals Room‐Temperature Sodium–Sulfur Batteries and Beyond: Realizing Practical High Energy Systems through Anode, Cathode, and Electrolyte Engineering

2021 ◽  
Vol 11 (14) ◽  
pp. 2003493
Author(s):  
Alex Yong Sheng Eng ◽  
Vipin Kumar ◽  
Yiwen Zhang ◽  
Jianmin Luo ◽  
Wenyu Wang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Energy Systems ◽  
High Energy ◽  
Sodium Sulfur

Selenium enriched hybrid metal chalcogenides with enhanced redox kinetics for high-energy density supercapacitors

2021 ◽  
Vol 414 ◽  
pp. 128924
Author(s):  
Ramu Manikandan ◽  
C. Justin Raj ◽  
Goli Nagaraju ◽  
Rajavel Velayutham ◽  
Simon E. Moulton ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Metal Chalcogenides ◽  
Redox Kinetics

scholarly journals Monocarborane cluster as a stable fluorine-free calcium battery electrolyte

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kazuaki Kisu ◽  
Sangryun Kim ◽  
Takara Shinohara ◽  
Kun Zhao ◽  
Andreas Züttel ◽  
...  
Keyword(s):  
Room Temperature ◽  
Coulombic Efficiency ◽  
Low Cost ◽  
Ionic Conductivities ◽  
High Energy ◽  
High Energy Density ◽  
Free Calcium ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Battery Electrolyte

AbstractHigh-energy-density and low-cost calcium (Ca) batteries have been proposed as ‘beyond-Li-ion’ electrochemical energy storage devices. However, they have seen limited progress due to challenges associated with developing electrolytes showing reductive/oxidative stabilities and high ionic conductivities. This paper describes a calcium monocarborane cluster salt in a mixed solvent as a Ca-battery electrolyte with high anodic stability (up to 4 V vs. Ca2+/Ca), high ionic conductivity (4 mS cm−1), and high Coulombic efficiency for Ca plating/stripping at room temperature. The developed electrolyte is a promising candidate for use in room-temperature rechargeable Ca batteries.

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