Syntheses and Properties of Pyrrole Derivative as a Cathode Material for Li-Ion Batteries

2012 ◽  
Vol 236-237 ◽  
pp. 731-735
Author(s):  
Chang Su ◽  
Ling Min Wang ◽  
Li Huan Xu ◽  
Jun Lei Liu ◽  
Fang Yang ◽  
...  
Keyword(s):  
Chemical Structure ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Particle Morphology ◽  
Side Chain ◽  
Li Ion Batteries ◽  
Galvanostatic Charge ◽  
Half Cell ◽  
Ft Ir ◽  
Li Ion

A copolymer of 4-(1H-pyrrol-1-yl)phenol (PLPY) and pyrrole ( P(PLPY-co-Py) )was synthesized. And the chemical structure and battery performance of the prepared materials were characterized comparably by 1H NMR, FT-IR spectra and galvanostatic charge-discharge testing using simulant lithium ion half-cell method, respectively. The results shows that the introduction of the phenol group to the pyrrole as a rigid side chain could prevent the polymer from agglomeration and optimize the particle morphology of the resulting polymers, all of which made it demonstrate a significantly improved specific capacity (73.9 mAh•g-1) compared with PPy (21.4 mAh•g-1)

Research of Properties on Li-Ion Batteries Based on a Polypyrrole Derivative Bearing TEMPO as a Cathode Material

2014 ◽  
Vol 936 ◽  
pp. 447-451
Author(s):  
Li Huan Xu ◽  
Fang Yang ◽  
Chang Su ◽  
Cheng Zhang
Keyword(s):  
Oxidative Polymerization ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Particle Morphology ◽  
Li Ion Batteries ◽  
Half Cell ◽  
H Nmr ◽  
Voltage Plateau ◽  
Ft Ir ◽  
Li Ion

4-(3-(Pyrrol-1-yl) butyric acid base)-2,2,6,6-tetramethylpiperidin (Py-B-TEMPO) was synthesized by etherification reaction of 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-yloxy. And the polymer of its monomer was prepared by chemical oxidative polymerization and the chemical structure and battery performance of the prepared materials were characterized comparably by Mass spectrometry, 1H NMR, FT-IR spectra and galvanostatic charge-discharge testing using simulant lithium ion half-cell method, respectively. The results shows that the introduction of the TEMPO group to the pyrrole could prevent the polymer from agglomeration and optimize the particle morphology of the resulting polymers, all of which made it demonstrate a significantly improved specific capacity of 86.5 mAh·g-1 (99% of the theoretical capacity) compared with PPy (21.7 mAh·g-1). Moreover, it gives an obvious voltage plateau of nearly 3.5 V which is comparable to the redox potential of TEMPO.

MOF-derived hollow Co4S3/C nanosheet arrays grown on carbon cloth as the anode for high-performance Li-ion batteries

2020 ◽  
Vol 49 (40) ◽  
pp. 14115-14122
Author(s):  
Mingchen Shi ◽  
Qiang Wang ◽  
Junwei Hao ◽  
Huihua Min ◽  
Hairui You ◽  
...  
Keyword(s):  
Anode Materials ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cobalt Sulfide ◽  
Carbon Cloth ◽  
Li Ion Batteries ◽  
High Specific Capacity ◽  
Nanosheet Arrays ◽  
Li Ion

Cobalt sulfide (Co4S3) is considered as one of the most promising anode materials for lithium-ion batteries owing to its high specific capacity.

FACILE SOL–GEL SYNTHESIS OF Li[Li0.2Mn0.56Ni0.16Co0.08]O2 AS IMPROVED CATHODE MATERIAL FOR LITHIUM-ION BATTERIES

2013 ◽  
Vol 01 (04) ◽  
pp. 1340015
Author(s):  
WENJUAN HAO ◽  
HAN CHEN ◽  
YANHONG WANG ◽  
HANHUI ZHAN ◽  
QIANGQIANG TAN ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Sol Gel ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Electrochemical Performances ◽  
Acetate Tetrahydrate ◽  
Li Ion Batteries ◽  
Gel Method ◽  
Sol Gel Method ◽  
Li Ion

Li [ Li 0.2 Mn 0.56 Ni 0.16 Co 0.08] O 2 cathode materials for Li -ion batteries were synthesized by a facile sol–gel method followed by calcination at various temperatures (700°C, 800°C and 900°C). Lithium acetate dihydrate, manganese (II) acetate tetrahydrate, nickel (II) acetate tetrahydrate and cobalt (II) acetate tetrahydrate are employed as the metal precursors, and citric acid monohydrate as the chelating agent. For the obtained Li [ Li 0.2 Mn 0.56 Ni 0.16 Co 0.08] O 2 materials, the metal components existed in the form of Mn 4+, Ni 2+ and Co 3+, and their molar ratio was in good agreement with 0.56 : 0.16 : 0.08. The calcination temperature played an important role in the particle size, crystallinity and further electrochemical properties of the cathode materials. The Li [ Li 0.2 Mn 0.56 Ni 0.16 Co 0.08] O 2 material calcined at 800°C for 6 h showed the best electrochemical performances. Its discharge specific capacities cycled at 0.1 C, 0.5 C, 1 C and 2 C rates were 266.0 mAh g−1, 243.1 mAh g−1, 218.2 mAh g−1 and 192.9 mAh g−1, respectively. When recovered to 0.1 C rate, the discharge specific capacity was 260.2 mAh g−1 and the capacity loss is only 2.2%. This work demonstrates that the sol–gel method is a facile route to prepare high performance Li [ Li 0.2 Mn 0.56 Ni 0.16 Co 0.08] O 2 cathode materials for Li -ion batteries.

scholarly journals Electrospun Fe3O4-Sn@Carbon Nanofibers Composite as Efficient Anode Material for Li-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2203
Author(s):  
Hong Wang ◽  
Yuejin Ma ◽  
Wenming Zhang
Keyword(s):  
Anode Materials ◽  
Electrochemical Reaction ◽  
Active Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Solvothermal Reaction ◽  
Li Ion Batteries ◽  
Li Ion ◽  
A Current

Nanoscale Fe3O4-Sn@CNFs was prepared by loading Fe3O4 and Sn nanoparticles onto CNFs synthesized via electrostatic spinning and subsequent thermal treatment by solvothermal reaction, and were used as anode materials for lithium-ion batteries. The prepared anode delivers an excellent reversible specific capacity of 1120 mAh·g−1 at a current density of 100 mA·g−1 at the 50th cycle. The recovery rate of the specific capacity (99%) proves the better cycle stability. Fe3O4 nanoparticles are uniformly dispersed on the surface of nanofibers with high density, effectively increasing the electrochemical reaction sites, and improving the electrochemical performance of the active material. The rate and cycling performance of the fabricated electrodes were significantly improved because of Sn and Fe3O4 loading on CNFs with high electrical conductivity and elasticity.

Advances of top-down synthesis approach for high-performance silicon anodes in Li-ion batteries

2021 ◽  
Author(s):  
Ansor Prima Yuda ◽  
Pierre Yosia Edward Koraag ◽  
Ferry Iskandar ◽  
Hutomo Suryo Wasisto ◽  
Afriyanti Sumboja
Keyword(s):  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Silicon Anode ◽  
Li Ion Batteries ◽  
Ultra High Energy ◽  
Li Ion ◽  
Synthesis Approach

With a remarkable theoretical specific capacity of ~4200 mAh g-1, silicon anode is at the forefront to enable lithium-ion batteries (LIBs) with ultra-high energy density. However, we have yet to...

Effect of Al(OH)3 in Enhancing PbSnF4 Anode Performances for Rechargeable Lithium-Ion Battery

2015 ◽  
Vol 245 ◽  
pp. 153-158 ◽  
Author(s):  
Denis P. Opra ◽  
Anatoly B. Podgorbunsky ◽  
Sergey V. Gnedenkov ◽  
Sergey L. Sinebryukhov ◽  
Alexander A. Sokolov ◽  
...  
Keyword(s):  
Aluminum Hydroxide ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Li Ion Batteries ◽  
Two Phase ◽  
Milling Method ◽  
Energy Ball ◽  
Li Ion ◽  
Initial Capacity

Two-phase Al(OH)3–PbSnF4 composites (concentrations of aluminum hydroxide are equal to 5 wt.%, 15 wt.% and 30 wt.%) has been prepared by high-energy ball-milling method. The materials were employed as anodes in Li-ion batteries. It was established that PbSnF4-based systems yield high initial capacity of 800–1100 mAh g–1. The reversible specific capacity of Al(OH)3–PbSnF4 (aluminum hydroxide – 15 wt.%) after 10-fold charge–discharge cycling in the range of 2.5–0.005 V attains 120 mAh g–1, while the specific capacity of pure PbSnF4 is equal only to 20 mAh g–1. It has been shown that the deviation from 15 wt.% concentration of Al (OH)3 decreases cycling stability of lead fluorostannate (II).

scholarly journals B-Doped Si@C Nanorod Anodes for High-Performance Lithium-Ion Batteries

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Shibin Liu ◽  
Jianwei Xu ◽  
Hongyu Zhou ◽  
Jing Wang ◽  
Xiangcai Meng
Keyword(s):  
High Performance ◽  
Coulombic Efficiency ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
High Specific Capacity ◽  
Production Strategy ◽  
Li Ion ◽  
B Doping

B doping plays an important role in improving the conductivity and electrochemical properties of Si anodes for Li-ion batteries. Herein, we developed a facile and massive production strategy to fabricate C-coated B-doped Si (B-Si@C) nanorod anodes using casting intermediate alloys of Al-Si and Al-B and dealloying followed by C coating. The B-Si@C nanorod anodes demonstrate a high specific capacity of 560 mAg-1, with a high initial coulombic efficiency of 90.6% and substantial cycling stability. Notably, the melting cast approach is facile, simple, and applicable to doping treatments, opening new possibilities for the development of low-cost, environmentally benign, and high-performance Li-ion batteries.

Synthesis and Measurement of SnO2@C/graphene Nanocomposite for Lithium Ion Batteries

2011 ◽  
Vol 396-398 ◽  
pp. 2330-2333
Author(s):  
Hai Teng Wang ◽  
Da Wei He ◽  
Yong Sheng Wang ◽  
Hong Peng Wu ◽  
Ji Gang Wang
Keyword(s):  
Anode Material ◽  
Tin Oxide ◽  
Synthesis Method ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Galvanostatic Charge ◽  
Capacity Retention ◽  
Graphene Nanocomposite ◽  
Li Ion ◽  
Charge Discharge

SnO2@C/graphene nanocomposite was prepared via chemical synthesis method. The electrochemical performance of the SnO2@C/graphene nanocomposite as anode material was measured by galvanostatic charge/discharge cycling. As an anode material for Li ion batteries, the SnO2@C/graphene nanocomposite shows 823mAhg-1 and 732mAhg-1 capacities for the first discharge and charge, respectively, which is more than the theoretical capacity of tin oxide, and has good capacity retention with a capacity of 748mAhg-1 after 30 cycles. These results suggest that SnO2@C/graphene nanocomposite would be a promising anode material for lithium ion battery.

Nanostructured Anode Material for Li-Ion Batteries

2010 ◽  
Vol 72 ◽  
pp. 320-324 ◽  
Author(s):  
Germano Ferrara ◽  
Catia Arbizzani ◽  
Libero Damen ◽  
Rosalinda Inguanta ◽  
Salvatore Piazza ◽  
...  
Keyword(s):  
Anode Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Nanowire Arrays ◽  
Template Method ◽  
Li Ion Batteries ◽  
Electrochemical Tests ◽  
Alumina Membranes ◽  
A Value ◽  
Li Ion

The present paper focuses on a nanostructured SnCo alloy electrochemically prepared by template method in view of its use as anode material alternative to graphite in lithium-ion batteries. The fabrication of SnCo nanowire arrays was carried out by potentiostatic co-deposition of the two metals by using nanostructured anodic alumina membranes as template. Electrochemical tests on lithiation-delithiation of these SnCo electrodes in conventional organic electrolyte (EC:DMC LiPF6) at 30°C showed that their specific capacity was stable for about the first 12 cycles at a value near to the theoretical one for Li22Sn5 and, hence, progressively decayed.

Improved electrochemical performance of 2D accordion-like MnV2O6 nanosheets as anode materials for Li-ion batteries

2020 ◽  
Vol 49 (6) ◽  
pp. 1794-1802 ◽  
Author(s):  
Xiaoyu Zhang ◽  
Xinjian Li ◽  
Fuyi Jiang ◽  
Wei Du ◽  
Chuanxin Hou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Anode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Theoretical Specific Capacity ◽  
Constituent Elements

MnV2O6 is a promising anode material for lithium ion batteries with high theoretical specific capacity, abundant reserves and inexpensive constituent elements.

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