scholarly journals Synthesis of Hierarchical CoO Nano/Microstructures as Anode Materials for Lithium-Ion Batteries

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Dan Qin ◽  
Peng Yan ◽  
Guangzhong Li ◽  
Yunchuang Wang ◽  
Yukuan An ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Rate Performance ◽  
Initial Discharge Capacity ◽  
Promising Alternative ◽  
Initial Discharge ◽  
A Current

Hierarchical CoO nano/microstructures are synthesized via a hydrothermal method and a subsequent annealed process. When evaluated for use in lithium-ion batteries, hierarchical CoO nano/microstructures show a high initial discharge capacity of 1370 mAh/g and a high reversible capacity of 1148 mAh/g over 20 cycles at a current density of 100 mA/g. Superior rate performance with coulombic efficiency of about 100% upon galvanostatic cycling is also revealed. The excellent electrochemical properties of hierarchical CoO nano/microstructures make it a promising alternative anode material for high power lithium-ion batteries applications.

scholarly journals Covalent Bonding of Si Nanoparticles on Graphite Nanosheets as Anodes for Lithium-Ion Batteries Using Diazonium Chemistry

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1741 ◽  
Author(s):  
Yi Zhang ◽  
Jinghui Ren ◽  
Tao Xu ◽  
Ailing Feng ◽  
Kai Hu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Graphite Nanosheets ◽  
Silicon Carbon ◽  
Synthesis Strategy ◽  
Si Nanoparticles ◽  
A Current

Silicon/carbon (Si/C) composite has been proven to be an effective method of enhancing the electrochemical performance of Si-based anodes for lithium-ion batteries (LIBs). However, the practical application of Si/C materials in LIBs is difficult because of the weak interaction between Si and C. In this study, we applied two-step diazotization reactions to modify graphite nanosheets (GNs) and Si nanoparticles (Si NPs), yielding a stable Si–Ar–GNs composite. Owing to aryl (Ar) group bonding, Si NPs were dispersed well on the GNs. The as-prepared Si–Ar–GNs composite delivered an initial reversible capacity of 1174.7 mAh·g−1 at a current density of 100 mAh·g−1. Moreover, capacity remained at 727.3 mAh·g−1 after 100 cycles, showing improved cycling performance. This synthesis strategy can be extended to prepare other Si/C anode materials of LIBs.

SiOx and carbon double-layer coated Si nanorods as anode materials for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (103) ◽  
pp. 101008-101015 ◽  
Author(s):  
Yunhe Sun ◽  
Long Fan ◽  
Wangyu Li ◽  
Ying Pang ◽  
Jun Yang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Double Layer ◽  
Current Density ◽  
Anode Materials ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
A Current

SNs@SiOx/C composite delivers a reversible capacity of 779 mA h g−1 over 300 cycles at a current density of 400 mA g−1.

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.

2D Coordination Polymer Derived Co3O4Nanocrystals as High Performance Anode Material of Lithium-Ion Batteries

NANO ◽  
2018 ◽  
Vol 13 (12) ◽  
pp. 1850139 ◽  
Author(s):  
Hao Wen ◽  
Changdong Shi ◽  
Yuanrui Gao ◽  
Hongren Rong ◽  
Yanyong Sha ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Anode Materials ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
One Step ◽  
A Current

Co3O4 nanocrystals have been synthesized via an ordinary one-step calcination of a cobalt-based 2D coordination polymer [Co(tfbdc)(4,4[Formula: see text]-bpy)(H2O)2]. As an anode material for lithium-ion batteries, the obtained Co3O4 nanocrystals exhibit high reversible capacity, excellent cyclic stability and better rate capability. The reversible capacity of the Co3O4 nanocrystals maintains 713[Formula: see text]mA[Formula: see text]h[Formula: see text]g[Formula: see text] after 50 cycles at a current density of 50[Formula: see text]mA[Formula: see text]g[Formula: see text]. Our results confirm that searching for metal oxides nanomaterials used as anode materials of lithium ion batteries via the calcinations of 2D coordination polymer is a new route.

scholarly journals Dealloying-Derived Nanoporous Cu6Sn5 Alloy as Stable Anode Materials for Lithium-Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4348
Author(s):  
Chi Zhang ◽  
Zheng Wang ◽  
Yu Cui ◽  
Xuyao Niu ◽  
Mei Chen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Specific Area ◽  
Cycling Performance ◽  
Ex Situ ◽  
Li Ion ◽  
Xrd Patterns ◽  
Cu6sn5 Alloy

The volume expansion during Li ion insertion/extraction remains an obstacle for the application of Sn-based anode in lithium ion-batteries. Herein, the nanoporous (np) Cu6Sn5 alloy and Cu6Sn5/Sn composite were applied as a lithium-ion battery anode. The as-dealloyed np-Cu6Sn5 has an ultrafine ligament size of 40 nm and a high BET-specific area of 15.9 m2 g−1. The anode shows an initial discharge capacity as high as 1200 mA h g−1, and it remains a capacity of higher than 600 mA h g−1 for the initial five cycles at 0.1 A g−1. After 100 cycles, the anode maintains a stable capacity higher than 200 mA h g−1 for at least 350 cycles, with outstanding Coulombic efficiency. The ex situ XRD patterns reveal the reverse phase transformation between Cu6Sn5 and Li2CuSn. The Cu6Sn5/Sn composite presents a similar cycling performance with a slightly inferior rate performance compared to np-Cu6Sn5. The study demonstrates that dealloyed nanoporous Cu6Sn5 alloy could be a promising candidate for lithium-ion batteries.

Ball-Milled Graphite-Tin Composite Anode Materials for Lithium-Ion Battery

2012 ◽  
Vol 736 ◽  
pp. 127-132
Author(s):  
Kuldeep Rana ◽  
Anjan Sil ◽  
Subrata Ray
Keyword(s):  
Lithium Ion Battery ◽  
Anode Materials ◽  
High Capacity ◽  
Lithium Ion ◽  
Composite Anode ◽  
X Ray Diffraction ◽  
Promising Alternative ◽  
X Ray ◽  
Initial Discharge ◽  
Lithium Ion Cell

Lithium alloying compounds as an anode materials have been a focused for high capacity lithium ion battery due to their highenergy capacity and safety characteristics. Here we report on the preparation of graphite-tin composite by using ball-milling in liquid media. The composite material has been characterized by scanning electron microscope, energy depressive X-ray spectroscopy, X-ray diffraction and Raman spectra. The lithium-ion cell made from graphite-tin composite presented initial discharge capacity of 1065 mAh/g and charge capacity 538 mAh/g, which becomes 528 mAh/g in the second cycle. The composite of graphite-tin with higher capacity compared to pristine graphite is a promising alternative anode material for lithium-ion battery.

SiO2@NiO core–shell nanocomposites as high performance anode materials for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 63012-63016 ◽  
Author(s):  
Yourong Wang ◽  
Wei Zhou ◽  
Liping Zhang ◽  
Guangsen Song ◽  
Siqing Cheng
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Coulombic Efficiency ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Core Shell ◽  
Excellent Cycling Stability

A SiO2@NiO core–shell electrode exhibits almost 100% coulombic efficiency, excellent cycling stability and rate capability after the first few cycles.

A comparative study of ordered mesoporous carbons with different pore structures as anode materials for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (53) ◽  
pp. 42922-42930 ◽  
Author(s):  
Diganta Saikia ◽  
Tzu-Hua Wang ◽  
Chieh-Ju Chou ◽  
Jason Fang ◽  
Li-Duan Tsai ◽  
...  
Keyword(s):  
Comparative Study ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Stability ◽  
Mesoporous Carbons ◽  
Ordered Mesoporous Carbons ◽  
Ordered Mesoporous

Ordered mesoporous carbons CMK-3 and CMK-8 with different mesostructures are evaluated as anode materials for lithium-ion batteries. CMK-8 possesses higher reversible capacity, better cycling stability and rate capability than CMK-3.

Improved rate performance and cycling stability of graphitized mesoporous carbon as anode materials for lithium-ion batteries

2018 ◽  
Vol 54 (1) ◽  
pp. 648-658 ◽  
Author(s):  
Jing Zhang ◽  
Tianxiang Xu ◽  
Ye Cong ◽  
Yeqiong Zhang ◽  
Xuanke Li ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Mesoporous Carbon ◽  
Anode Materials ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Rate Performance
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