A novel synthetic route to cathode materials for Li–S batteries: from organic sulfides to sulfur/nitrogenous carbon composites

2017 ◽  
Vol 5 (32) ◽  
pp. 16796-16802 ◽  
Author(s):  
Qian Wang ◽  
Zhen-Bo Wang ◽  
Minghui Yang ◽  
Chao Li ◽  
Da-Ming Gu
Keyword(s):  
Cathode Materials ◽  
Oxidation Process ◽  
Carbon Composites ◽  
Synthetic Route ◽  
Organic Sulfide ◽  
Organic Sulfides ◽  
Carbon Coated

Through a calcination and anin situoxidation process, a nitrogenous carbon coated sulfur composite is synthesized from an organic sulfide.

scholarly journals Rapid mechanochemical synthesis of polyanionic cathode with improved electrochemical performance for Na-ion batteries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xing Shen ◽  
Quan Zhou ◽  
Miao Han ◽  
Xingguo Qi ◽  
Bo Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Mechanochemical Synthesis ◽  
Cathode Materials ◽  
Industrial Application ◽  
Synthesis Process ◽  
In Situ Fabrication ◽  
Stationary Energy ◽  
Carbon Coated

AbstractNa-ion batteries have been considered promising candidates for stationary energy storage. However, their wide application is hindered by issues such as high cost and insufficient electrochemical performance, particularly for cathode materials. Here, we report a solvent-free mechanochemical protocol for the in-situ fabrication of sodium vanadium fluorophosphates. Benefiting from the nano-crystallization features and extra Na-storage sites achieved in the synthesis process, the as-prepared carbon-coated Na3(VOPO4)2F nanocomposite exhibits capacity of 142 mAh g−1 at 0.1C, higher than its theoretical capacity (130 mAh g−1). Moreover, a scaled synthesis with 2 kg of product was conducted and 26650-prototype cells were demonstrated to proof the electrochemical performance. We expect our findings to mark an important step in the industrial application of sodium vanadium fluorophosphates for Na-ion batteries.

In situ synthesis of lithium sulfide–carbon composites as cathode materials for rechargeable lithium batteries

2013 ◽  
Vol 1 (4) ◽  
pp. 1433-1440 ◽  
Author(s):  
Zichao Yang ◽  
Juchen Guo ◽  
Shyamal K. Das ◽  
Yingchao Yu ◽  
Zhehao Zhou ◽  
...  
Keyword(s):  
Lithium Batteries ◽  
Cathode Materials ◽  
In Situ Synthesis ◽  
Carbon Composites ◽  
Rechargeable Lithium Batteries ◽  
Lithium Sulfide

High sulfur content microporous carbon coated sulfur composites synthesized via in situ oxidation of metal sulfide for high-performance Li/S batteries

2017 ◽  
Vol 5 (13) ◽  
pp. 6052-6059 ◽  
Author(s):  
Qian Wang ◽  
Zhen-Bo Wang ◽  
Chao Li ◽  
Da-Ming Gu
Keyword(s):  
Sulfur Content ◽  
Hollow Sphere ◽  
High Performance ◽  
Oxidation Process ◽  
Metal Sulfide ◽  
Microporous Carbon ◽  
In Situ Oxidation ◽  
High Sulfur Content ◽  
Carbon Coated

Microporous carbon coated sulfur composites with a double-hollow-sphere structure are prepared through anin situoxidation process.

scholarly journals In situ IR spectroscopy during oxidation process of cobalt Prussian blue analogues

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hideharu Niwa ◽  
Toshiaki Moriya ◽  
Takayuki Shibata ◽  
Yuya Fukuzumi ◽  
Yutaka Moritomo
Keyword(s):  
Ir Spectroscopy ◽  
Prussian Blue ◽  
Infrared Absorption ◽  
Cathode Materials ◽  
Oxidation Process ◽  
Oxidation Processes ◽  
Prussian Blue Analogues ◽  
In Situ Ir ◽  
In Situ Ir Spectroscopy

AbstractCobalt Prussian blue analogues (Co-PBA; NaxCo[Fe(CN)6]y), consisting of cyano-bridged transition metal network, –Fe–CN–Co–NC–Fe–, are promising cathode materials for Na-ion secondary batteries. In the oxidation process, oxidization of Fe and/or Co are compensated by Na+ deintercalation. Here, we investigated the oxidization process of three Co-PBAs by means of in situ infrared absorption (IR) spectroscopy. With use of an empirical rule of the frequencies of the CN− stretching mode in ferrocyanide ([FeII(CN)6]4−) and ferricyanide ([FeIII(CN)6]3−), the oxidation processes of Co-PBAs were determined against the Fe concentration (y) and temperature (T). We will discuss the interrelation between the oxidation processes and Fe concentration (y).

Novel CO2-Thermic Oxidation Process with Mg-Based Intermetallic Compounds and Its Application to Energy Storage Materials

2018 ◽  
Author(s):  
Younghwan Cha ◽  
Jung-In Lee ◽  
Panpan Dong ◽  
Xiahui Zhang ◽  
Min-Kyu Song
Keyword(s):  
Intermetallic Compounds ◽  
Oxidation Process ◽  
Value Added ◽  
Energy Storage Materials ◽  
Reaction Products ◽  
Materials Synthesis ◽  
Energy Materials ◽  
A Value ◽  
Carbon Coated ◽  
Novel Strategy

A novel strategy for the oxidation of Mg-based intermetallic compounds using CO<sub>2</sub> as an oxidizing agent was realized via simple thermal treatment, called ‘CO2-thermic Oxidation Process (CO-OP)’. Furthermore, as a value-added application, electrochemical properties of one of the reaction products (carbon-coated macroporous silicon) was evaluated. Considering the facile tunability of the chemical/physical properties of Mg-based intermetallics, we believe that this route can provide a simple and versatile platform for functional energy materials synthesis as well as CO<sub>2</sub> chemical utilization in an environment-friendly and sustainable way.

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