Fluorinated Graphite (FG)-Modified Li–S Batteries with Superhigh Primary Specific Capacity and Improved Cycle Stability

2021 ◽  
Author(s):  
Ziyang Jia ◽  
Hongzhang Zhang ◽  
Tianyu Li ◽  
Yang Luo ◽  
Jingwang Yan ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Cycle Stability ◽  
Fluorinated Graphite

Introducing nanodiamond into TiO2-based anode for improving the performance of lithium-ion batteries

2019 ◽  
Vol 43 (9) ◽  
pp. 3907-3912
Author(s):  
Xuan Gao ◽  
Xiaochen Sun ◽  
Zhigang Jiang ◽  
Qiliang Wang ◽  
Nan Gao ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Detonation Nanodiamonds ◽  
Cycle Stability ◽  
Hollow Nanospheres ◽  
New Type

In this work, we report a new type of anode consisting of mixed detonation nanodiamonds (DNDs) and titanium dioxide (TiO2) hollow nanospheres (HNSs) for improving the specific capacity and cycle stability of lithium ion batteries (LIBs).

High-quality Prussian blue crystals as superior cathode materials for room-temperature sodium-ion batteries

2014 ◽  
Vol 7 (5) ◽  
pp. 1643-1647 ◽  
Author(s):  
Ya You ◽  
Xing-Long Wu ◽  
Ya-Xia Yin ◽  
Yu-Guo Guo
Keyword(s):  
Prussian Blue ◽  
Water Content ◽  
Cathode Materials ◽  
Room Temperature ◽  
Specific Capacity ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Cycle Stability ◽  
High Quality ◽  
High Specific Capacity

High-quality Prussian blue crystals with a small number of vacancies and a low water content show high specific capacity and remarkable cycle stability as cathode materials for Na-ion batteries.

scholarly journals Solvents Adjusted Pure Phase CoCO3 as Anodes for High Cycle Stability

2020 ◽  
Author(s):  
Liming Liu ◽  
X.X. Huang ◽  
Zengyan Wei ◽  
Xiaoming Duan ◽  
Bo Zhong ◽  
...  
Keyword(s):  
Particle Size ◽  
High Current Density ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Electrochemical Characteristics ◽  
Cycle Stability ◽  
Pure Phase ◽  
Small Primary ◽  
High Theoretical Capacity

Abstract CoCO3 with high theoretical capacity has been considered as a candidate anode for the next generation of lithium-ion batteries. However, the electrochemical characteristics of CoCO3 itself, especially the cycle stability under high current density, hindering its application. Herein, pure phase CoCO3 particles with different particle and pore sizes were prepared by adjusting the solvents. CoCO3 synthesized with diethylene glycol (DG-CC) as the reaction solvent shows the best electrochemical performance for the particle size of about 0.85 µm, which because the small primary particle size within and the mesopores maintain the structural stability. A high specific capacity of after 1000 cycles was achieved, and an excellent capacity retention was presented. The capacity provided by different electrochemical reactions and the impedance of DG-CC under different cycles were further compared. Those results provide an important reference for the structural design and stable cycle performance of pure CoCO3.

Quasi-Stable Electroless Ni-P Deposition: A Pivotal Strategy to Create Flexible Li-S Pouch Batteries with Bench Mark Cycle Stability and Specific Capacity

2018 ◽  
Vol 28 (20) ◽  
pp. 1707272 ◽  
Author(s):  
Jian Gou ◽  
Hongzhang Zhang ◽  
Xiaofei Yang ◽  
Yuqing Chen ◽  
Ying Yu ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Bench Mark ◽  
Cycle Stability ◽  
Electroless Ni

Effect of Fluorine-Containing Additive on the Electrochemical Properties of Silicon Anode for Lithium-Ion Batteries

2019 ◽  
Vol 944 ◽  
pp. 699-704 ◽  
Author(s):  
Jing Wang ◽  
Xiao Hang Yang ◽  
Yue Feng Su ◽  
Shi Chen ◽  
Feng Wu
Keyword(s):  
Lithium Ion Batteries ◽  
Coulombic Efficiency ◽  
Solid Electrolyte Interphase ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Silicon Anode ◽  
Cycle Stability ◽  
Promising Candidate ◽  
Sem Images ◽  
The Stability

Silicon anode is a promising candidate as an alternative to the conventional graphitic anode in lithium-ion batteries. In this work, silicon anode is modified by NH4F using a facile method in air. The concentration of NH4F on the electrochemical performance is systematically checked. The 5wt%NH4F-modified silicon anode exhibits enhanced cycle and rate performances, the first discharge specific capacity is 3958 mAh·g-1 with 86.45% as the coulombic efficiency at 0.4A·g-1. The capacity can maintain at 703.3 mAh·g-1 after 50 cycles, exhibiting a much better cycle stability than pristine silicon anode (329.9 mAh·g-1 after 50 cycles). SEM images confirm that NH4F can alleviate the volume expansion of silicon since LiF can be generated at the surface which is beneficial to the stability of solid-electrolyte interphase (SEI).

scholarly journals Bipolar nitrogen-doped graphene frameworks as high-performance cathodes for lithium ion batteries

2017 ◽  
Vol 5 (4) ◽  
pp. 1588-1594 ◽  
Author(s):  
Yanshan Huang ◽  
Dongqing Wu ◽  
Arezoo Dianat ◽  
Manferd Bobeth ◽  
Tao Huang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycle Stability ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Pyridinic N

As cathode materials in lithium ion batteries, nitrogen-doped graphene frameworks (N-GFs) manifest excellent specific capacity and cycle stability, owing to the fast surface faradaic reactions of pyridinic N and pyridinic N-oxide with both p- and n-doped states.

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