Germanium-based multiphase material as a high-capacity and cycle-stable anode for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89176-89180 ◽  
Author(s):  
Dohyoung Kwon ◽  
Sinho Choi ◽  
Guoxiu Wang ◽  
Soojin Park
Keyword(s):  
Electrical Conductivity ◽  
Lithium Ion Batteries ◽  
Carbothermic Reduction ◽  
High Capacity ◽  
Reduction Process ◽  
Lithium Ion ◽  
High Electrical Conductivity ◽  
Capacity Retention ◽  
Multiphase Material

Cu-incorporated porous Ge-based anodes with high electrical conductivity are prepared by a simple carbothermic reduction process of CuGeO3. The Cu–Ge-based anodes exhibit outstanding capacity retention at 25 °C and 60 °C.

Carbon-coated silicon nanoparticle-embedded carbon sphere assembly electrodes with enhanced performance for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 38012-38017 ◽  
Author(s):  
Donghee Gueon ◽  
Jaehyun Lee ◽  
Joong Kee Lee ◽  
Jun Hyuk Moon
Keyword(s):  
Lithium Ion Batteries ◽  
Silicon Nanoparticles ◽  
High Capacity ◽  
Lithium Ion ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Capacity Retention ◽  
Silicon Nanoparticle ◽  
Carbon Coated

We demonstrate carbon-coated silicon nanoparticles embedded in monodisperse carbon spheres for lithium-ion batteries with high capacity retention.

Uniform GeO2 dispersed in nitrogen-doped porous carbon core–shell architecture: an anode material for lithium ion batteries

2015 ◽  
Vol 3 (43) ◽  
pp. 21722-21732 ◽  
Author(s):  
Duc Tung Ngo ◽  
Hang T. T. Le ◽  
Ramchandra S. Kalubarme ◽  
Jae-Young Lee ◽  
Choong-Nyeon Park ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Germanium Oxide ◽  
Volume Changes ◽  
Capacity Retention ◽  
Nitrogen Doped ◽  
Carbon Core

Germanium oxide (GeO2), which possesses great potential as a high-capacity anode material for lithium ion batteries, has suffered from its poor capacity retention and rate capability due to significant volume changes during lithiation and delithiation.

scholarly journals Synthesis and Electrochemical Performance of Mesoporous MnC2O4 Nanorod/rGO Composite Anode for Lithium-ion Batteries

2021 ◽  
Author(s):  
Ya-Nan Zhang ◽  
Li-Ying Xue ◽  
Yong Zhang ◽  
Jing Su ◽  
Yun-Fei Long Long ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Low Cost ◽  
High Capacity ◽  
Reduction Process ◽  
Lithium Ion ◽  
High Energy ◽  
Volume Effect ◽  
Discharge Process

Abstract MnC2O4 is a promising anode material for high-energy lithium-ion batteries due to its low cost and high capacity. However, its application is limited by the poor cyclic-stability and rate performance caused by its low conductivity. Herein, mesoporous MnC2O4 nanorod/rGO composite is prepared via precipitation followed by a reflux reduction process, where MnC2O4 nanorods are attached to the surface of graphene through electrostatic adsorption. This composite delivers a discharge capacity of 1082, 964, and 808 mAh·g-1 after 200 cycles at 3, 5, and 8 C, respectively. The good electrochemical performance can be attributed to the synergistic effect between mesoporous nanorods and rGO. This synergistic effect not only offers high conductivity, nanoparticles, and abundant mesopores to accelerate electrode kinetics but also provides a more stable structure to reduce the volume effect during the charge/discharge process. Therefore, mesoporous MnC2O4 nanorod/rGO composite can find a potential application in high-energy lithium-ion batteries.

Thionated Benzo[c]thiophen-1(3H)-one as Organic Cathodes with High Capacity for Sulfur-rich All Organic Lithium-ion Battery

2021 ◽  
Author(s):  
Bingjie Zhang ◽  
Xiaodong Yang ◽  
Ben He ◽  
Qiqi Wang ◽  
Zishun Liu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Organic Materials ◽  
High Capacity ◽  
Lithium Ion ◽  
High Solubility ◽  
Environmental Friendliness ◽  
High Theoretical Capacity

Organic materials have potential advantages in lithium-ion batteries (LIBs) due to their environmental friendliness, flexible designability, and high theoretical capacity. However, the commonly low electrical conductivity and high solubility of...

Electrochemical Properties of P-Doped Silicon Thin Film Anodes of Lithium Ion Batteries

2013 ◽  
Vol 737 ◽  
pp. 80-84 ◽  
Author(s):  
Arenst Andreas Arie ◽  
Joong Kee Lee
Keyword(s):  
Electrical Conductivity ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
High Capacity ◽  
Lithium Ion ◽  
Charge Transfer Resistance ◽  
Commercial Application ◽  
Silicon Thin Film ◽  
Transfer Resistance

Silicon would seem to be a possible candidate to replace graphite or carbon as anode materials for lithium ion batteries based on its potential high capacity of 4200 mAhg-1. The main problem that must be solved for commercial application of silicon as anode material was the poor cyclic performance due to severe volume expansion during repeated charged-discharged cycles and its low electrical conductivity. In this work, we proposed Phosphorus doped (P-doped) Si films as anodes in lithium ion batteries. The electrochemical properties of the silicon based electrodes were examined by means of charge-discharge and impedance test. In comparison with the bare silicon electrode, the P type silicon electrode exhibited higher specific capacity of 2585 mAhg-1 until the 50th cycle. It was attributed to the improved electrical conductivity of Si film and reduced charge transfer resistance

Three-dimensionally interconnected Si frameworks derived from natural halloysite clay: a high-capacity anode material for lithium-ion batteries

2018 ◽  
Vol 47 (22) ◽  
pp. 7522-7527 ◽  
Author(s):  
Hao Wan ◽  
Hao Xiong ◽  
Xiaohe Liu ◽  
Gen Chen ◽  
Ning Zhang ◽  
...  
Keyword(s):  
Molten Salt ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Capacity ◽  
Reduction Process ◽  
Lithium Ion ◽  
Salt Reduction ◽  
Branch Diameter

Three-dimensionally interconnected (3D-interconnected) Si frameworks with a branch diameter of ∼15 nm were successfully prepared using a molten-salt reduction process.

scholarly journals Molybdenum disulfide grafted titania nanotube arrays as high capacity retention anode material for lithium ion batteries

2016 ◽  
Vol 7 (1-2) ◽  
pp. 67-73 ◽  
Author(s):  
Tauseef Anwar ◽  
Li Wang ◽  
Rizwan Ur Rehman Sagar ◽  
Farhat Nosheen ◽  
Khurram Shehzad ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Molybdenum Disulfide ◽  
Anode Material ◽  
High Capacity ◽  
Lithium Ion ◽  
Nanotube Arrays ◽  
Capacity Retention ◽  
Titania Nanotube Arrays ◽  
Titania Nanotube

ELECTROCHEMICAL PROPERTY OF LiMn2O4 IN OVER-DISCHARGED CONDITIONS

2012 ◽  
Vol 05 (03) ◽  
pp. 1250028 ◽  
Author(s):  
JINKUI FENG ◽  
BOHANG SONG ◽  
MAN ON LAI ◽  
LI LU ◽  
XIANTING ZENG ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Electrochemical Reduction ◽  
Anode Material ◽  
Electrochemical Property ◽  
High Capacity ◽  
Reduction Process ◽  
Lithium Ion ◽  
Electrochemical Measurement ◽  
Charge Capacity ◽  
Initial Charge

This work studies LiMn 2 O 4 in an over-discharged condition. Electrochemical measurement shows that the LiMn 2 O 4 electrode undergoes an irreversible electrochemical reduction process where its structure is permanently destroyed during over-discharge. Although LiMn 2 O 4 shows a poor over-discharge durance with a reduction starting at 2.5 V vs. Li/Li+ , the galvanostatic test indicates that LiMn 2 O 4 can be considered to be used as a high capacity anode material for lithium ion batteries with an initial charge capacity of 814 mAh ⋅ g-1 and 452 mAh ⋅ g-1 at the 100th cycle.

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