High electrochemical performance and phase evolution of magnetron sputtered MoO2 thin films with hierarchical structure for Li-ion battery electrodes

2014 ◽  
Vol 2 (13) ◽  
pp. 4714-4721 ◽  
Author(s):  
Yulong Liu ◽  
Hong Zhang ◽  
Pan Ouyang ◽  
Wenhao Chen ◽  
Ying Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transformation ◽  
Electrochemical Performance ◽  
Hierarchical Structure ◽  
Rate Capability ◽  
Reversible Capacity ◽  
Phase Evolution ◽  
Li Ion Battery ◽  
Transformation Mechanism ◽  
Li Ion

MoO2 thin films with hierarchical structure demonstrate excellent rate capability and reversible capacity, and the phase transformation mechanism was revealed.

High electrochemical performance and lithiation–delithiation phase evolution in CuO thin films for Li-ion storage

2015 ◽  
Vol 3 (27) ◽  
pp. 14202-14209 ◽  
Author(s):  
Wenhao Chen ◽  
Hong Zhang ◽  
Zhiyuan Ma ◽  
Bao Yang ◽  
Zhicheng Li
Keyword(s):  
Thin Films ◽  
Electrochemical Performance ◽  
Specific Surface ◽  
Electrochemical Properties ◽  
Hierarchical Structure ◽  
Phase Evolution ◽  
Ion Storage ◽  
Reaction Characteristics ◽  
Li Ion

Magnetron sputtered CuO thin films with a hierarchical structure and large specific surface were prepared, and their electrochemical properties and reaction characteristics as the Li-ion storage electrodes were investigated.

Sodiation vs. lithiation phase transformations in a high rate – high stability SnO2 in carbon nanocomposite

2015 ◽  
Vol 3 (13) ◽  
pp. 7100-7111 ◽  
Author(s):  
Jia Ding ◽  
Zhi Li ◽  
Huanlei Wang ◽  
Kai Cui ◽  
Alireza Kohandehghan ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Self Assembly ◽  
High Stability ◽  
Rate Capability ◽  
High Rate ◽  
Li Ion Battery ◽  
Assembly Method ◽  
Li Ion ◽  
Carbon Nanocomposite ◽  
Battery Anode

An SnO2-carbon nanocomposite was created by a self-assembly method. This showed promising electrochemical performance as both a Na and Li ion battery anode, with among the best cyclability and rate capability when tested against Na.

Design of SnO2/C hybrid triple-layer nanospheres as Li-ion battery anodes with high stability and rate capability

2015 ◽  
Vol 3 (6) ◽  
pp. 2748-2755 ◽  
Author(s):  
Hao Hu ◽  
Haoyan Cheng ◽  
Guojian Li ◽  
Jinping Liu ◽  
Ying Yu
Keyword(s):  
Electrochemical Performance ◽  
Anode Materials ◽  
High Stability ◽  
Rate Capability ◽  
Li Ion Battery ◽  
Triple Layer ◽  
Li Ion

Schematic illustration of the unique nanostructure and composition of STNs for alleviating the pulverization problem of SnO2 anode materials and their superior electrochemical performance.

Synthesis and Electrochemical Study of Zr-Doped LiNixMnyCo(1-x–y)O2 as Cathode Material for Secondary Li-Ion Battery

2005 ◽  
Vol 486-487 ◽  
pp. 614-617 ◽  
Author(s):  
Seong-Hwan Na ◽  
Hyun Soo Kim ◽  
Seong In Moon
Keyword(s):  
Electrochemical Performance ◽  
Protective Effect ◽  
Diffusion Rate ◽  
Rate Capability ◽  
Cycle Life ◽  
Li Ion Battery ◽  
Synthetic Route ◽  
Half Cell ◽  
Xrd Pattern ◽  
Li Ion

In this work, a simple way was contrived to enhance the rate capability and cycle life of LiNixMnyCo(1-x-y)O2 by doping Zr into the material. Zr-doped LiNixMnyCo(1-x-y)O2 was synthesized by solution-based synthetic route, and its electrochemical performance was investigated as 2016 coin-type half cell. With doping, some impurity peaks appeared in the XRD pattern, which seems to be related to Zr containing oxides. The enhanced characteristics in the rate capability and cycle life might be the result of the protective effect of Zr oxide against the decomposition of electrolyte and a faster Li diffusion rate.

Density modulated multilayer silicon thin films as li-ion battery anodes

2012 ◽  
Vol 1440 ◽  
Author(s):  
M. Taha Demirkan ◽  
Xin Li ◽  
Bingqing Wei ◽  
Tansel Karabacak
Keyword(s):  
Thin Films ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
High Capacity ◽  
Reversible Capacity ◽  
Low Density ◽  
Li Ion Battery ◽  
Silicon Thin Film ◽  
Battery Cell ◽  
Li Ion

AbstractIn this work, we demonstrate a new density modulated multilayered silicon thin film anode approach that can provide a robust high capacity electrode for Li-ion batteries. These films have the ability to tolerate large volume changes due to their controlled microstructure. Silicon films with alternating layers of high/low material density were deposited using a DC sputtering system. Density of the individual layers was controlled by simply changing the working gas pressure during sputtering. Samples of Si films having thicknesses of 460 nm with different number of high/low density layers have been deposited on Cu current collectors. The electrochemical performance of the multilayered anode material was evaluated using a galvanostatic battery testing system at C/10 rate. After reaching a stabilized phase the battery cell showed a high coulombic efficiency of 96% to 99% and reversible specific capacity of 666 mAh g-1 (after 100 cycles). Low-density layers are believed to be acting as compliant sheets during volume expansion making the films more durable compared to conventional Si film anodes. The results indicate that density modulated multilayer Si thin films can be used to improve the mechanical properties of Li-ion battery anodes leading to high reversible capacity values even after high number of cycles.

Solvothermal synthesis of a silicon hierarchical structure composed of 20 nm Si nanoparticles coated with carbon for high performance Li-ion battery anodes

2016 ◽  
Vol 45 (35) ◽  
pp. 13667-13670 ◽  
Author(s):  
Jianbin Zhou ◽  
Zhuoheng Jiang ◽  
Wenlong Cai ◽  
Xianyu Liu ◽  
Yongchun Zhu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Hierarchical Structure ◽  
Solvothermal Synthesis ◽  
High Performance ◽  
Carbon Layer ◽  
Li Ion Battery ◽  
Si Nanoparticles ◽  
Li Ion ◽  
20 Nm

A solvothermal synthesized silicon hierarchical structure shows a high electrochemical performance for Li-ion battery anodes after coating with a carbon layer.

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