scholarly journals Electrochemical performance of nano-sized LiFePO4-embedded 3D-cubic ordered mesoporous carbon and nitrogenous carbon composites

RSC Advances ◽  
2020 ◽  
Vol 10 (51) ◽  
pp. 30406-30414
Author(s):  
Sourav Khan ◽  
Rayappan Pavul Raj ◽  
Talla Venkata Rama Mohan ◽  
Parasuraman Selvam

Nano-sized LiFePO4-embedded nitrogenous ordered mesoporous carbon composite cathode facilitate electronic conductivity and significantly enhances Li-ion diffusion and retains 97% of the initial discharge capacity at 1C rate even after 100 cycles.

Carbon ◽  
2020 ◽  
Vol 170 ◽  
pp. 236-244
Author(s):  
Wonhee Kim ◽  
Jiyeon Lee ◽  
Seungmin Lee ◽  
KwangSup Eom ◽  
Chanho Pak ◽  
...  

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4349
Author(s):  
Anupriya K. Haridas ◽  
Natarajan Angulakshmi ◽  
Arul Manuel Stephan ◽  
Younki Lee ◽  
Jou-Hyeon Ahn

Sodium-ion batteries (SIBs) are promising alternatives to lithium-based energy storage devices for large-scale applications, but conventional lithium-ion battery anode materials do not provide adequate reversible Na-ion storage. In contrast, conversion-based transition metal sulfides have high theoretical capacities and are suitable anode materials for SIBs. Iron sulfide (FeS) is environmentally benign and inexpensive but suffers from low conductivity and sluggish Na-ion diffusion kinetics. In addition, significant volume changes during the sodiation of FeS destroy the electrode structure and shorten the cycle life. Herein, we report the rational design of the FeS/carbon composite, specifically FeS encapsulated within a hierarchically ordered mesoporous carbon prepared via nanocasting using a SBA-15 template with stable cycle life. We evaluated the Na-ion storage properties and found that the parallel 2D mesoporous channels in the resultant FeS/carbon composite enhanced the conductivity, buffered the volume changes, and prevented unwanted side reactions. Further, high-rate Na-ion storage (363.4 mAh g−1 after 500 cycles at 2 A g−1, 132.5 mAh g−1 at 20 A g−1) was achieved, better than that of the bare FeS electrode, indicating the benefit of structural confinement for rapid ion transfer, and demonstrating the excellent electrochemical performance of this anode material at high rates.


RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 60168-60175 ◽  
Author(s):  
Qiaoli Peng ◽  
Zehui Zhang ◽  
Ze'ai Huang ◽  
Wei Ren ◽  
Jie Sun

N-Doped ordered mesoporous carbon (N-OMC) was successfully prepared using dicyandiamide (C2H4N4) as the nitrogen source and was grafted onto activated carbon fibres (ACFs) to form carbon composites (ACF@N-OMC).


2014 ◽  
Vol 195 ◽  
pp. 22-27 ◽  
Author(s):  
Beina Wu ◽  
Chongchong Miao ◽  
Lili Yu ◽  
Ziyi Wang ◽  
Chusen Huang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document