Cu–Ge core–shell nanowire arrays as three-dimensional electrodes for high-rate capability lithium-ion batteries

2012 ◽  
Vol 22 (4) ◽  
pp. 1511-1515 ◽  
Author(s):  
Jiazheng Wang ◽  
Ning Du ◽  
Hui Zhang ◽  
Jingxue Yu ◽  
Deren Yang
Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1602 ◽  
Author(s):  
Jun-Ping Hu ◽  
Hang Sheng ◽  
Qi Deng ◽  
Qiang Ma ◽  
Jun Liu ◽  
...  

LiNixCoyMnzO2 (LNCM)-layered materials are considered the most promising cathode for high-energy lithium ion batteries, but suffer from poor rate capability and short lifecycle. In addition, the LiNi1/3Co1/3Mn1/3O2 (NCM 111) is considered one of the most widely used LNCM cathodes because of its high energy density and good safety. Herein, a kind of NCM 111 with semi-closed structure was designed by controlling the amount of urea, which possesses high rate capability and long lifespan, exhibiting 140.9 mAh·g−1 at 0.85 A·g−1 and 114.3 mAh·g−1 at 1.70 A·g−1, respectively. The semi-closed structure is conducive to the infiltration of electrolytes and fast lithium ion-transfer inside the electrode material, thus improving the rate performance of the battery. Our work may provide an effective strategy for designing layered-cathode materials with high rate capability.


2015 ◽  
Vol 3 (38) ◽  
pp. 19393-19401 ◽  
Author(s):  
Wei He ◽  
Huajun Tian ◽  
Xiaoliang Wang ◽  
Fengxia Xin ◽  
Weiqiang Han

3D GeOx/MWCNTs composite spheres as anode exhibited high rate capability and long-life performances with high areal loading for lithium ion batteries.


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