Impact of Crystal Density on the Electrochemical Behavior of Lithium-Ion Anode Materials: Exemplary Investigation of (Fe-Doped) GeO2

2021 ◽  
Author(s):  
Tobias Eisenmann ◽  
Adele Birrozzi ◽  
Angelo Mullaliu ◽  
Jakob Asenbauer ◽  
Gabriele Giuli ◽  
...  
Keyword(s):  
Electrochemical Behavior ◽  
Anode Materials ◽  
Lithium Ion ◽  
Crystal Density

The Effect of Ball Milling on the Electrochemical Behavior of Silicon Composite Electrode

2013 ◽  
Vol 833 ◽  
pp. 280-285
Author(s):  
Zhong Sheng Wen
Keyword(s):  
Lithium Ion Batteries ◽  
Ball Milling ◽  
Electrochemical Behavior ◽  
Anode Materials ◽  
Milling Time ◽  
Composite Electrode ◽  
High Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Ball Milling Time

Silicon material possesses the highest theoretic capacity (4200mAh/g, ten times of the capacity of commercialized carbon anode materials) of all known anode materials for lithium ion batteries and thus receives lots of attention to date. Silicon-containing composite electrode for lithium ion batteries was prepared by high-energy ball milling process. The microstructure and morphology of silicon electrode was investigated in detail. The effect of the structure transformation of the electrode by ball milling on the electrochemical behavior was systematically analyzed. Electrode precursors after a mediate ball milling time of 45min is beneficial to get a better cycling performance, due to the well distributed and less destroy of Carboxyl Methyl Cellulose (CMC). Weak lithium insertion into CMC occurs unavoidably in the charging-discharging process of the composite electrodes, which should be the main reason for the sudden disability of electrode. The electrochemical properties can get a dramatic enhancement within voltage window of 0.02-1.5V. Excellent cyclability with high capacity retention above 1800mAh/g after 40 cycles could be gained by controlling the ball-milling time and the voltage windows. It might be a feasible way to obtain satisfactory cyclability for high capacity anode materials.

Al-Doped Fe2O3 nanoparticles: advanced anode materials for high capacity lithium ion batteries

2021 ◽  
Vol 50 (15) ◽  
pp. 5115-5119
Author(s):  
Yongqing Yuan ◽  
Shijie Liang ◽  
Weipei Liu ◽  
Qiong Zhao ◽  
Puguang Peng ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Discharge Capacity ◽  
Electrochemical Behavior ◽  
Anode Materials ◽  
High Capacity ◽  
Lithium Ion ◽  
Fe2o3 Nanoparticles ◽  
Initial Discharge Capacity ◽  
Initial Discharge ◽  
The Stability

We successfully synthesized Al-Fe2O3 anode with high initial discharge capacity of 1210 mAh g−1 under 0.5 A g−1 and maintained around 900 mAh g−1 during the cycles. The doping of Al assists in the stability and electrochemical behavior of the whole electrode.

Facile Synthesis of Porous Mn2O3Nanoplates and Their Electrochemical Behavior as Anode Materials for Lithium Ion Batteries

2014 ◽  
Vol 20 (20) ◽  
pp. 6126-6130 ◽  
Author(s):  
Yanjun Zhang ◽  
Yang Yan ◽  
Xueyun Wang ◽  
Gen Li ◽  
Dingrong Deng ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Electrochemical Behavior ◽  
Anode Materials ◽  
Lithium Ion ◽  
Facile Synthesis

scholarly journals Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries

2015 ◽  
Vol 229 (9) ◽  
Author(s):  
Björn Karl Licht ◽  
Fabian Homeyer ◽  
Katharina Bösebeck ◽  
Michael Binnewies ◽  
Paul Heitjans
Keyword(s):  
Electrochemical Behavior ◽  
Anode Materials ◽  
State Of The Art ◽  
Low Cost ◽  
Solid Electrolyte Interphase ◽  
Active Material ◽  
Lithium Ion ◽  
Copper Particles ◽  
Improved Performance ◽  
Nanostructured Copper

AbstractGraphitic materials are currently the state-of-the-art anode materials for lithium ion secondary batteries. By chemical modification, the electrochemical performance of the pristine materials can be improved. In this paper we report on the preparation of nanostructured copper particles on graphite by thermal decomposition of copper formate. With this technique a novel, simple and low cost method for a homogeneous deposition of nanostructured copper particles on graphite was established. Different amounts of copper were realized and their influence on the electrochemical behavior of the active material was investigated. The copper particles had a size distribution between 50 nm and 300 nm. Electrochemical measurements displayed an improved performance of the synthesized composite material compared to the pristine material. Cyclic voltammetry showed a suppressed cointercalation of solvated lithium and an increased formation of the solid electrolyte interphase (SEI). Battery cycling demonstrated an increased discharge capacity and cycling stability.

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