Synthesis and electrochemical performance of Na-modified Li2Fe0.5Mn0.5SiO4 cathode material for Li-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 22818-22824 ◽  
Author(s):  
Ming Li ◽  
Lu-Lu Zhang ◽  
Xue-Lin Yang ◽  
Hua-Bin Sun ◽  
Yun-Hui Huang ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Cathode Material ◽  
Solid State Reaction ◽  
Rate Capability ◽  
Li Ion Batteries ◽  
Na Doping ◽  
Li Ion

Li2−xNaxFe0.5Mn0.5SiO4/C composites have been synthesized via a refluxing-assisted solid-state reaction. They can be well indexed as two mixed polymorphs with P21 and Pmn21. Na-doping can significantly improve the capacity and the rate capability.

Kinetic analysis and alloy designs for metal/metal fluorides toward high rate capability for all-solid-state fluoride-ion batteries

2021 ◽  
Vol 9 (11) ◽  
pp. 7018-7024
Author(s):  
Takahiro Yoshinari ◽  
Datong Zhang ◽  
Kentaro Yamamoto ◽  
Yuya Kitaguchi ◽  
Aika Ochi ◽  
...  
Keyword(s):  
Solid State ◽  
Rate Capability ◽  
High Rate ◽  
Fluoride Ion ◽  
Li Ion Batteries ◽  
High Rate Capability ◽  
Metal Fluorides ◽  
New Concepts ◽  
Metal Metal ◽  
Li Ion

A Cu–Au cathode material for all-solid-state fluoride-ion batteries with high rate-capability was designed as new concepts for electrochemical energy storage to handle the physicochemical energy density limit that Li-ion batteries are approaching.

Study on electrochemical performance and mechanism of V-doped Li2FeSiO4 cathode material for Li-ion batteries

2015 ◽  
Vol 152 ◽  
pp. 496-504 ◽  
Author(s):  
Lu-Lu Zhang ◽  
Hua-Bin Sun ◽  
Xue-Lin Yang ◽  
Yan-Wei Wen ◽  
Yun-Hui Huang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Performance And Mechanism

Synthesis, Characterization and Electrochemical Performance of Li2Mn0.7Fe0.3SiO4 Prepared from Solid-state Reaction

2009 ◽  
Vol 620-622 ◽  
pp. 17-20 ◽  
Author(s):  
Wen Gang Liu ◽  
Yun Hua Xu ◽  
Rong Yang
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Cathode Material ◽  
Solid State Reaction ◽  
High Capacity ◽  
Reversible Capacity ◽  
Solid State Reaction Method ◽  
Cycle Life ◽  
Solution Route ◽  
Better Than

Li2MSiO4(M=Mn, Co, Ni) is a potential high capacity cathode material because of its outstanding properties that exchange of two electrons per transition metal atom is possible and the theoretical capacity of Li2MSiO4 can reach as high as 330 mAhg-1. In this family, the cathode performance of Li2MnSiO4 synthesized by solution route has been published recently. However, it seems that the cycle life of Li2MnSiO4 fell short of our expectation. In this work, the Li2Mn0.7Fe0.3SiO4 cathode material was synthesized by traditional solid-state reaction method. The prepared powder was consisted of majority of Li2Mn0.7Fe0.3SiO4 and minor impurities which were examined by XRD. FESEM morphology showed that the products of Li2Mn0.7Fe0.3SiO4 and Li2MnSiO4 have similar particle size (about 50-300 nm). The electrochemical performance of Li2Mn0.7Fe0.3SiO4, especially for reversible capacity and cycle life, exhibited better than those of Li2MnSiO4.

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