scholarly journals Electrochemical behavior of nanostructured MnO2/C (Vulcan®) composite in aqueous electrolyte LiNO3

2011 ◽  
Vol 65 (3) ◽  
pp. 287-293 ◽  
Author(s):  
Milica Vujkovic ◽  
Nikola Cvjeticanin ◽  
Nemanja Gavrilov ◽  
Ivana Stojkovic ◽  
Slavko Mentus
Keyword(s):  
Cathode Material ◽  
Discharge Capacity ◽  
Electrochemical Behavior ◽  
Aqueous Electrolyte ◽  
Lithium Ion ◽  
Electrolyte Solutions ◽  
Li Ion Batteries ◽  
Organic Electrolytes ◽  
Li Ion ◽  
Materials Used

The electrolytic solutions of contemporary Li-ion batteries are made exclusively with the organic solvents since anodic materials of these batteries have potentials with greater negativity than the potential of the water reduction, thus the organic electrolytes can withstand the voltages of 3-5 V that are characteristic for these batteries. Ever since it was discovered that some materials can electrochemically intercalate and deintercalate Li+ ions in aqueous solutions, numerous studies have been conducted with the aim of extending operational time of the aqueous Li-ion batteries. Manganese oxide has been studied as the electrode material in rechargeable lithium-ion batteries with organic electrolytes. In this paper its electrochemical behavior as an anode material in aqueous electrolyte solutions was examined. MnO2 as a component of nanodispersed MnO2/C (Vulcan?) composite was successfully synthesized hydrothermally. Electrochemical properties of this material were investigated in aqueous saturated LiNO3 solution by both cyclic voltammetry and galvanostatic charging/discharging (LiMn2O4 as cathode material) techniques. The obtained composite shows a relatively good initial discharge capacity of 96.5 mAh/g which, after 50th charging/discharging cycles, drops to the value of 57mAh/g. MnO2/C (Vulcan?) composite, in combination with LiMn2O4 as a cathode material, shows better discharge capacity compared to other anodic materials used in aqueous Li-ion batteries according to certain studies that have been conducted. Its good reversibility and cyclability, and the fact that hydrothermal method is simple and effective, makes MnO2/C(Vulcan?) composite a promising anodic material for aqueous Li-ion batteries.

An aqueous electrolyte rechargeable Li-ion/polysulfide battery

2014 ◽  
Vol 2 (24) ◽  
pp. 9025-9029 ◽  
Author(s):  
Rezan Demir-Cakan ◽  
Mathieu Morcrette ◽  
Jean-Bernard Leriche ◽  
Jean-Marie Tarascon
Keyword(s):  
Cathode Material ◽  
Potential Application ◽  
Aqueous Electrolyte ◽  
Aqueous System ◽  
Li Ion Batteries ◽  
Organic Electrolytes ◽  
Li Ion ◽  
System Coupling ◽  
Aprotic Organic Electrolytes

In spite of great research efforts on Li–S batteries in aprotic organic electrolytes, there have been very few studies showing the potential application of this system in aqueous electrolyte. Herein, we explore this option and report on a cheaper and safer new aqueous system coupling a well-known cathode material in Li-ion batteries (i.e. LiMn2O4) with a dissolved polysulfide anode.

Mo-doped LiV3O8 nanorod-assembled nanosheets as a high performance cathode material for lithium ion batteries

2015 ◽  
Vol 3 (7) ◽  
pp. 3547-3558 ◽  
Author(s):  
Huanqiao Song ◽  
Yaguang Liu ◽  
Cuiping Zhang ◽  
Chaofeng Liu ◽  
Guozhong Cao
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Hydrothermal Method ◽  
Discharge Capacity ◽  
High Performance ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Li Ion Batteries ◽  
Subsequent Calcination ◽  
Li Ion

A new Mo-doped LiV3O8 nanorod-assembled nanosheet was prepared by a simple hydrothermal method and subsequent calcination. Its unique structure demonstrates a maximum discharge capacity of 269 mAh g−1 at 300 mA g−1 within 4.0-2.0 V, and excellent rate and cycle performance for Li-ion batteries.

Improving the electrochemical performance of the LiNi0.5Mn1.5O4spinel by polypyrrole coating as a cathode material for the lithium-ion battery

2015 ◽  
Vol 3 (1) ◽  
pp. 404-411 ◽  
Author(s):  
Xuan-Wen Gao ◽  
Yuan-Fu Deng ◽  
David Wexler ◽  
Guo-Hua Chen ◽  
Shu-Lei Chou ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Electrochemical Performance ◽  
Cathode Material ◽  
Electrochemical Properties ◽  
Lithium Ion Battery ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Conductive Polypyrrole

Conductive polypyrrole (PPy)-coated LiNi0.5Mn1.5O4(LNMO) composites are applied as cathode materials in Li-ion batteries, and their electrochemical properties are explored at both room and elevated temperature.

Unravelling the mechanism of lithium insertion into and extraction from trirutile-type LiNiFeF6 cathode material for Li-ion batteries

CrystEngComm ◽  
2015 ◽  
Vol 17 (32) ◽  
pp. 6163-6174 ◽  
Author(s):  
L. de Biasi ◽  
G. Lieser ◽  
J. Rana ◽  
S. Indris ◽  
C. Dräger ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Future Application ◽  
Lithium Insertion ◽  
Li Ion Batteries ◽  
Lithium Insertion Mechanism ◽  
Insertion Mechanism ◽  
Li Ion

For possible future application as cathode material in lithium ion batteries, the lithium insertion mechanism of trirutile-type LiNiFeF6 was investigated.

A low dimensional composite of hexagonal lithium manganese borate (LiMnBO3), a cathode material for Li-ion batteries

2014 ◽  
Vol 2 (44) ◽  
pp. 18946-18951 ◽  
Author(s):  
Semih Afyon ◽  
Dipan Kundu ◽  
Azad J. Darbandi ◽  
Horst Hahn ◽  
Frank Krumeich ◽  
...  
Keyword(s):  
Cathode Material ◽  
Discharge Capacity ◽  
Li Ion Batteries ◽  
Lithium Manganese ◽  
Li Ion ◽  
Low Dimensional ◽  
First Discharge Capacity

The nano h-LiMnBO3 composite delivers a high first discharge capacity of 140 mA h g−1 at C/15 rate within a reduced potential window.

Al2O3 Coating of Spherical LiNi0.8Co0.2O2 for Li-Ion Batteries

2007 ◽  
Vol 336-338 ◽  
pp. 517-520 ◽  
Author(s):  
Xiang Ming He ◽  
Wei Hua Pu ◽  
Fang Hui Zhao ◽  
Jie Rong Ying ◽  
Chang Yin Jiang ◽  
...  
Keyword(s):  
Discharge Capacity ◽  
Lithium Ion ◽  
Surface Element ◽  
Li Ion Batteries ◽  
Initial Discharge Capacity ◽  
Element Analysis ◽  
Initial Discharge ◽  
Li Ion ◽  
Controlled Crystallization ◽  
First Time

Spherical LiNi0.8Co0.2O2 powders with particle size of 8~10μm were prepared based on controlled crystallization, and coated with Al2O3 by Al(OH)3 sol, that was prepared from Al(NO3)3 and NaOH, at first time. SEM, XRD and surface element analysis showed that the nano-sized Al2O3 was coated uniformly on the surface of LiNi0.8Co0.2O2 powder. At 25 °C, the initial discharge capacity decreased from 160 to 149 mAh g-1 after coating of Al2O3. The initial discharge capacity decreased from 168 to 163 mAh g-1 after coating of Al2O at 55 °C. After coating of Al2O3, the capacity retentions increased from 83.8% to 92.6% at the 50th cycle at 25°C, and from 36.3% to 90.8% at the 10th cycle at 55°C. This paves effective way to improve the performance of LiNi0.8Co0.2O2 material for rechargeable lithium ion batteries.

Synthesis of novel book-like K0.23V2O5 crystals and their electrochemical behavior in lithium batteries

2015 ◽  
Vol 51 (83) ◽  
pp. 15290-15293 ◽  
Author(s):  
Maowen Xu ◽  
Jin Han ◽  
Guannan Li ◽  
Yubin Niu ◽  
Sangui Liu ◽  
...  
Keyword(s):  
Cathode Material ◽  
Hydrothermal Method ◽  
Lithium Batteries ◽  
Electrochemical Behavior ◽  
Li Ion Batteries ◽  
Simple Hydrothermal Method ◽  
Li Ion ◽  
First Time

A novel book-like K0.23V2O5 crystal is obtained by a simple hydrothermal method and is explored as a cathode material for Li-ion batteries for the first time.

scholarly journals An overview of bio-interface electrolyte and Li2FePO4F as cathode in Li-ion batteries

2019 ◽  
Vol 9 (2) ◽  
pp. 3866-3873
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Sol Gel ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
View Point ◽  
Iron Nickel ◽  
Li Ion ◽  
Charge Discharge

Composites of {[(1-x-y) LiFe0.333Ni0.333 Co0.333] PO4}, xLi2FePO4F and yLiCoPO4system were synthesized using the sol-gel method. Stoichiometric weights of the mole-fraction of LiOH, FeCl2·4H2O and H3PO4, LiCl, Ni(NO3)2⋅6H2O, Co(Ac)2⋅4H2O, as starting materials of lithium, Iron, Nickel , and Cobalt, in 7 samples of the system, respectively. We exhibited Li1.167 Ni0.222 Co0.389 Fe0.388 PO4 is the best composition for cathode material in this study. Obviously, the used weight of cobalt in these samples is lower compared with LiCoO2 that is an advantage in view point of cost in this study. Charge-discharge haracteristics of the mentioned cathode materials were investigated by performing cycle tests in the range of 2.4–3.8 V (versus Li/Li+). Our results confirmed, although these kind systems can help for removing the disadvantage of cobalt which mainly is its cost and toxic, the performance of these kind systems are similar to the commercial cathode materials in Lithium Ion batteries (LIBs).

The high capacity and excellent rate capability of Ti-doped Li2MnSiO4 as a cathode material for Li-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1612-1618 ◽  
Author(s):  
Min Wang ◽  
Meng Yang ◽  
Liqun Ma ◽  
Xiaodong Shen
Keyword(s):  
Cathode Material ◽  
Discharge Capacity ◽  
High Capacity ◽  
Rate Capability ◽  
Undoped Sample ◽  
Li Ion Batteries ◽  
Li Ion

Ti-doped Li2Mn1−xTixSO4samples exhibit superior rate capability. Even at a higher rate (2 C) the samples keep a discharge capacity of around 700 mA h g−1, whereas the undoped sample only delivers a discharge capacity of ca. 5 mA h g−1.

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