Core–Shell Cathode Design with Molybdenum Trioxide as the Electrocatalytic Trapping Layer for High-Energy Density Room-Temperature Sodium Sulfur Batteries

2020 ◽  
Vol 124 (14) ◽  
pp. 7615-7623
Author(s):  
Ajay Piriya Vijaya Kumar Saroja ◽  
Kamaraj M. ◽  
Ramaprabhu Sundara
Keyword(s):  
Energy Density ◽  
Room Temperature ◽  
Molybdenum Trioxide ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Cathode Design ◽  
Sodium Sulfur

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.

Core–Shell Fe1–[email protected] Nanorods for Room Temperature All-Solid-State Sodium Batteries with High Energy Density

ACS Nano ◽  
2018 ◽  
Vol 12 (3) ◽  
pp. 2809-2817 ◽  
Author(s):  
Hongli Wan ◽  
Jean Pierre Mwizerwa ◽  
Xingguo Qi ◽  
Xin Liu ◽  
Xiaoxiong Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Room Temperature ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Sodium Batteries

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.

Enhanced dielectric properties and thermostability in polyimide composites with core-shell structured polyimide@BaTiO3 nanoparticles

2021 ◽  
pp. 095400832199352
Author(s):  
Wei Deng ◽  
Guanguan Ren ◽  
Wenqi Wang ◽  
Weiwei Cui ◽  
Wenjun Luo
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Energy Density ◽  
Breakdown Strength ◽  
In Situ Polymerization ◽  
Dielectric Materials ◽  
High Energy ◽  
Amic Acid ◽  
High Energy Density ◽  
Core Shell

Polymer composites with high dielectric constant and thermal stability have shown great potential applications in the fields relating to the energy storage. Herein, core-shell structured polyimide@BaTiO3 (PI@BT) nanoparticles were fabricated via in-situ polymerization of poly(amic acid) (PAA) and the following thermal imidization, then utilized as fillers to prepare PI composites. Increased dielectric constant with suppressed dielectric loss, and enhanced energy density as well as heat resistance were simultaneously realized due to the presence of PI shell between BT nanoparticles and PI matrix. The dielectric constant of PI@BT/PI composites with 55 wt% fillers increased to 15.0 at 100 Hz, while the dielectric loss kept at low value of 0.0034, companied by a high energy density of 1.32 J·cm−3, which was 2.09 times higher than the pristine PI. Moreover, the temperature at 10 wt% weight loss reached 619°C, demonstrating the excellent thermostability of PI@BT/PI composites. In addition, PI@BT/PI composites exhibited improved breakdown strength and toughness as compared with the BT/PI composites due to the well dispersion of PI@BT nanofillers and the improved interfacial interactions between nanofillers and polymer matrix. These results provide useful information for the structural design of high-temperature dielectric materials.

Core–Shell Structured NiCo2O4@ZnCo2O4 Nanomaterials with High Energy Density for Hybrid Capacitors

2021 ◽  
Vol 16 (7) ◽  
pp. 1134-1142
Author(s):  
Wenduo Yang ◽  
Jun Xiang ◽  
Sroeurb Loy ◽  
Nan Bu ◽  
Duo Cui ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrode Material ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Structural Characteristics ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Shell Composite ◽  
Hybrid Capacitors

NiCo2O4 as an electrode material for supercapacitors (SCs) has been studied by a host of researchers due to its unique structural characteristics and high capacitance. However, its performance has not yet reached the level of practical applications.it is an effective strategy to synthesize composite electrode materials for tackling the problem. Herein, NiCo2O4@ZnCo2O4 as a novel core–shell composite electrode material has been fabricated through a two-step simple hydrothermal method. The as-prepared sample can be directly used as cathode material of a supercapacitor, and its specific capacitance is 463.1 C/g at 1 A/g. An assembled capacitor has an energy density of 77 Wh·kg−1 at 2700 W·kg−1, and after 8000 cycles, 88% of the initial capacity remains.

A core–shell structure of cobalt sulfide//G-ink towards high energy density in asymmetric hybrid supercapacitors

2020 ◽  
Vol 4 (9) ◽  
pp. 4848-4858
Author(s):  
Venkata Thulasivarma Chebrolu ◽  
Balamuralitharan Balakrishnan ◽  
Aravindha Raja Selvaraj ◽  
Hee-Je Kim
Keyword(s):  
Energy Density ◽  
Shell Structure ◽  
High Energy ◽  
High Energy Density ◽  
Cobalt Sulfide ◽  
Core Shell ◽  
Hybrid Supercapacitors ◽  
Promising Strategy ◽  
Asymmetric Hybrid ◽  
Core Shell Structure

New atom substitution in transition metals is a promising strategy for improving the performance of supercapacitors (SCs).

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