scholarly journals CaF2 Coated Li1.2Mn0.56Ni0.16Co0.08O2 Microspheres with Enhanced Electrochemical Performances as Lithium Ion Battery Cathode

2021 ◽  
Vol 27 (1) ◽  
pp. 3-7
Author(s):  
Yunlong ZHOU ◽  
Chenhao ZHAO ◽  
Kaiyu LIU ◽  
Zhibiao HU ◽  
Qing XU ◽  
...  
Keyword(s):  
Surface Modification ◽  
Electrochemical Performance ◽  
Lithium Ion Battery ◽  
Discharge Capacity ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Coated Sample ◽  
Electrochemical Performances ◽  
Ion Conductor ◽  
High Discharge Capacity

Surface modification has been one of most effective methods to improve the electrochemical performance of lithium rich layered oxides. In this paper, the Li1.2Mn0.56Ni0.16Co0.08O2 microspheres are prepared by urea assisted combustion route, and then coated with proper amount of CaF2. XRD and SEM results show surface modification has not changed the structure of Li1.2Mn0.56Ni0.16Co0.08O2, and a uniform coating layer can be obtained. As lithium ion battery cathode, the optimal CaF2 (i.e, 2wt%) coated sample presents a high initial discharge capacity of 223 mAh·g-1 with Coulombic efficiency of 80.5% at 0.1C, which is much better than that of pristine sample. Also, a high discharge capacity of 119 mAh·g-1 can be obtained for CaF2 coated sample at 5C. The improved electrochemical performance may be attributed the formation of fast Li ion conductor on the surface supported by EIS study.

Carbon-coated β-MnO2 for cathode of lithium-ion battery

2020 ◽  
Vol 4 (4) ◽  
pp. 1704-1711
Author(s):  
Zige Tai ◽  
Ming Shi ◽  
Wei Zhu ◽  
Xin Dai ◽  
Yanfei Xin ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Discharge Capacity ◽  
Lithium Ion ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Carbon Coated

We prepared carbon-coated β-MnO2 for the cathode of a lithium-ion battery with high discharge capacity.

scholarly journals Evaluation Residual Moisture in Lithium-Ion Battery Electrodes and Its Effect on Electrode Performance

MRS Advances ◽  
2016 ◽  
Vol 1 (15) ◽  
pp. 1029-1035 ◽  
Author(s):  
Jianlin Li ◽  
Claus Daniel ◽  
Seong Jin An ◽  
David Wood
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Battery ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Cycle Life ◽  
Aqueous Processing ◽  
Short Term ◽  
Residual Moisture ◽  
Electrode Performance ◽  
Moisture Contents

ABSTRACTRemoving residual moisture in lithium-ion battery electrodes is essential for desired electrochemical performance. In this manuscript, the residual moisture in LiNi0.5Mn0.3Co0.2O2 cathodes produced by conventional solvent-based and aqueous processing is characterized and compared. The electrochemical performance has also been investigated for various residual moisture contents. It has been demonstrated that the residual moisture lowers the first cycle coulombic efficiency, but its effect on short term cycle life is insignificant.

High performance NiO microsphere anode assembled from porous nanosheets for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49765-49770 ◽  
Author(s):  
Lihua Chu ◽  
Meicheng Li ◽  
Xiaodan Li ◽  
Yu Wang ◽  
Zipei Wan ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Lithium Ion Battery ◽  
Discharge Capacity ◽  
High Performance ◽  
Lithium Ion ◽  
Porous Nanosheets ◽  
Excellent Electrochemical Performance ◽  
Rate Capacity

3D NiO microspheres assembled from porous nanosheets were fabricated, showing an excellent electrochemical performance in a lithium ion battery (reversible discharge capacity: up to 820 mA h g−1 after 100 cycles at 100 mA g−1; rate capacity: 634 mA h g−1 at 1 A g−1).

Enhancing Electrochemical Performance of LiNi0.6Co0.2Mn0.2O2 by Lithium-ion Conductor Surface Modification

2017 ◽  
Vol 224 ◽  
pp. 171-177 ◽  
Author(s):  
Siyang Liu ◽  
Congcong Zhang ◽  
Qili Su ◽  
Liangyu Li ◽  
Junming Su ◽  
...  
Keyword(s):  
Surface Modification ◽  
Electrochemical Performance ◽  
Lithium Ion ◽  
Ion Conductor ◽  
Conductor Surface

Carbon Nanotube Paper as Anode for Flexible Lithium-Ion Battery

NANO ◽  
2016 ◽  
Vol 11 (11) ◽  
pp. 1650120 ◽  
Author(s):  
Xiaogang Sun ◽  
Zhenhong Liu ◽  
Neng Li ◽  
Xiaoyong Wu ◽  
Yanyan Nie ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Performance ◽  
Lithium Ion Battery ◽  
Electrochemical Impedance ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Charge Transfer Resistance ◽  
Electrochemical Performances ◽  
Multiwalled Carbon ◽  
Transfer Resistance

In this investigation, multiwalled carbon nanotube (MWCNT) paper consists of MWCNTs and cellulose was fabricated by traditional paper-making method. It was applied directly as negative electrode in flexible lithium ion battery to replace ordinary electrode which is combined with anode material and current collector. The electrochemical performances of the as-produced MWCNT paper (AMP) and carbonized MWCNT paper (CMP) were evaluated in this study. The morphology and structure of the MWCNT papers were observed by scanning electron microscopy (SEM). The electrochemical performance of the battery was operated by cell test and electrochemical impedance spectroscopy (EIS) measurement. The charging and discharging results indicated that the CMP behaves with higher capacity than AMP. And the EIS analysis showed that a lower charge transfer resistance can be obtained in the CMP. The excellent electrochemical performance verifies the feasibility of MWCNT papers as a promising candidate for the anode in flexible lithium ion battery.

Solvothermal-assisted assembly of MoS2 nanocages on graphene sheets to enhance the electrochemical performance of lithium-ion battery

Nano Research ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 1029-1034
Author(s):  
Dafang He ◽  
Yi Yang ◽  
Zhenmin Liu ◽  
Jin Shao ◽  
Jian Wu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Graphene Sheets

scholarly journals dual-ion charge-discharge behaviors of Na-NiNc and NiNc-NiNc batteries

2021 ◽  
Author(s):  
Jinkwang Hwang ◽  
Rika Hagiwara ◽  
Hiroshi Shinokubo ◽  
Ji-Young Shin
Keyword(s):  
Discharge Capacity ◽  
Electrode Material ◽  
High Stability ◽  
Coulombic Efficiency ◽  
Active Electrode ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Charge Discharge ◽  
High Coulombic Efficiency

Dual-ion sodium-organic secondary batteries were provided with antiaromatic porphyrinoid, NiNc as an active electrode material, which implemented inherent charge-discharge behaviors with high discharge capacity, high stability, high Coulombic efficiency with...

Sign in / Sign up

Export Citation Format

Share Document