High Energy Rechargeable Metal Free Na-Ion Seawater Batteries: Phosphorus/Carbon Composite As a Promising Anode Material

2018 ◽  
Vol 6 (7) ◽  
pp. 3046-3054 ◽  
Author(s):  
Yongil Kim ◽  
Soo Min Hwang ◽  
Hyein Yu ◽  
Youngsik Kim

The seawater battery system shows stable cell performances, based on the open-structured cathode and closed-structured anode with the phosphorus/carbon composite.


2015 ◽  
Vol 3 (4) ◽  
pp. 1476-1482 ◽  
Author(s):  
Mingqi Li ◽  
Yan Yu ◽  
Jing Li ◽  
Baoling Chen ◽  
Xianwen Wu ◽  
...  

Because of its high capacity, relatively low operation potentials, abundance and environmental benevolence, silica is a promising anode material for high-energy lithium-ion batteries.


2021 ◽  
pp. 2102061
Author(s):  
Yongil Kim ◽  
Alberto Varzi ◽  
Alessandro Mariani ◽  
Guk‐Tae Kim ◽  
Youngsik Kim ◽  
...  

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Lei Zheng ◽  
Feng Guo ◽  
Tuo Kang ◽  
Yingzhu Fan ◽  
Wei Gu ◽  
...  

AbstractLithium metal is regarded as the ultimate negative electrode material for secondary batteries due to its high energy density. However, it suffers from poor cycling stability because of its high reactivity with liquid electrolytes. Therefore, continuous efforts have been put into improving the cycling Coulombic efficiency (CE) to extend the lifespan of the lithium metal negative electrode. Herein, we report that using dual-salt additives of LiPF6 and LiNO3 in an ether solvent-based electrolyte can significantly improve the cycling stability and rate capability of a Li-carbon (Li-CNT) composite. As a result, an average cycling CE as high as 99.30% was obtained for the Li-CNT at a current density of 2.5 mA cm–2 and an negative electrode to positive electrode capacity (N/P) ratio of 2. The cycling stability and rate capability enhancement of the Li-CNT negative electrode could be attributed to the formation of a better solid electrolyte interphase layer that contains both inorganic components and organic polyether. The former component mainly originates from the decomposition of the LiNO3 additive, while the latter comes from the LiPF6-induced ring-opening polymerization of the ether solvent. This novel surface chemistry significantly improves the CE of Li negative electrode, revealing its importance for the practical application of lithium metal batteries.


2017 ◽  
Vol 5 (36) ◽  
pp. 19280-19288 ◽  
Author(s):  
Minhong Kong ◽  
Kunhong Liu ◽  
Jinyu Ning ◽  
Jisheng Zhou ◽  
Huaihe Song

Perovskite framework NH4FeF3/CNS composites were prepared by an in situ co-pyrolysis method and exhibit better performance as anodes for both LIBs and SIBs.


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