scholarly journals SiO2/C Composite as a High Capacity Anode Material of LiNi0.8Co0.15Al0.05O2 Battery Derived from Coal Combustion Fly Ash

2020 ◽  
Vol 10 (23) ◽  
pp. 8428
Author(s):  
Arif Jumari ◽  
Cornelius Satria Yudha ◽  
Hendri Widiyandari ◽  
Annisa Puji Lestari ◽  
Rina Amelia Rosada ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Fly Ash ◽  
Anode Material ◽  
Discharge Capacity ◽  
Coal Combustion ◽  
High Performance ◽  
Heating Temperature ◽  
High Capacity ◽  
Lithium Ion ◽  
Reversible Capacity

Abundantly available SiO2 (silica) has great potential as an anode material for lithium-ion batteries because it is inexpensive and flexible. However, silicon oxide-based anode material preparation usually requires many complex steps. In this article, we report a facile method for preparing a SiO2/C composite derived from coal combustion fly ash as an anode material for Li-ion batteries. SiO2 was obtained by caustic extraction and HCl precipitation. Then, the SiO2/C composite was successfully obtained by mechanical milling followed by heat treatment. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). Electrochemical properties were tested using an 18650 cylindrical cell utilizing LiNi0.8Co0.15Al0.05O2 (NCA) as the counter electrode. Based on the obtained results, the physiochemical characteristics and electrochemical performance, it was determined that SiO2/C composites were greatly affected by the temperature of heat treatment. The best result was obtained with the SiO2 content of 10% w/w, heating temperature of 500 °C, initial specific discharge capacity of 586 mAh g−1 at 0.1 C (1 C = 378 mAh g−1), and reversible capacity of 87% after 20 cycles. These results confirmed that the obtained materials had good initial discharge capacity, cyclability, high performance, and exhibited great potential as an anode material for LIBs.

Synthesis and Electrochemical Performance of SnO2/Graphene Hybrid Anode for Lithium Ion Batteries

2013 ◽  
Vol 1540 ◽  
Author(s):  
Chia-Yi Lin ◽  
Chien-Te Hsieh ◽  
Ruey-Shin Juang
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
Coulombic Efficiency ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Homogeneous Distribution

ABSTRACTAn efficient microwave-assisted polyol (MP) approach is report to prepare SnO2/graphene hybrid as an anode material for lithium ion batteries. The key factor to this MP method is to start with uniform graphene oxide (GO) suspension, in which a large amount of surface oxygenate groups ensures homogeneous distribution of the SnO2 nanoparticles onto the GO sheets under the microwave irradiation. The period for the microwave heating only takes 10 min. The obtained SnO2/graphene hybrid anode possesses a reversible capacity of 967 mAh g-1 at 0.1 C and a high Coulombic efficiency of 80.5% at the first cycle. The cycling performance and the rate capability of the hybrid anode are enhanced in comparison with that of the bare graphene anode. This improvement of electrochemical performance can be attributed to the formation of a 3-dimensional framework. Accordingly, this study provides an economical MP route for the fabrication of SnO2/graphene hybrid as an anode material for high-performance Li-ion batteries.

Preparation of a porous Sn@C nanocomposite as a high-performance anode material for lithium-ion batteries

Nanoscale ◽  
2015 ◽  
Vol 7 (28) ◽  
pp. 11940-11944 ◽  
Author(s):  
Yanjun Zhang ◽  
Li Jiang ◽  
Chunru Wang
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Facile Hydrothermal Method ◽  
Calcination Process ◽  
Long Cycle Life ◽  
Good Rate Capability

A porous Sn@C nanocomposite was prepared via a facile hydrothermal method combined with a simple post-calcination process. It exhibited excellent electrochemical behavior with a high reversible capacity, long cycle life and good rate capability when used as an anode material for lithium ion batteries.

NANOPOROUS COPPER–SILICON COMPOSITE PREPARED BY CHEMICAL DEALLOYING AS ANODE MATERIAL FOR LITHIUM-ION BATTERIES

2013 ◽  
Vol 06 (03) ◽  
pp. 1350033 ◽  
Author(s):  
GUIJING LI ◽  
YANYAN SONG ◽  
LINPING ZHANG ◽  
XIN WEI ◽  
XIAOPING SONG ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Capacity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Simple Method ◽  
Electrochemical Tests ◽  
Nanoporous Copper ◽  
Excellent Electrochemical Performance ◽  
Melt Spun

A novel and simple method has been developed to prepare the Cu-Si composite as anode material for lithium-ion batteries. Nanoporous Cu-Si composite with pore sizes of 1~30 nm was prepared by dealloying the melt-spun Al-Cu-Si-Ce ribbons in a 5 wt.% HCl solution. Electrochemical tests revealed that the nanoporous Cu-Si electrodes exhibited highly reversible capacity of 2317 mAhg-1 and retained a capacity of 1030 mAhg-1 over 20 cycles. The excellent electrochemical performance is attributed to the unique porous structure of the Cu-Si composite. Our results demonstrate that this novel composite is a promising anode candidate for high-capacity rechargeable lithium-ion batteries.

Preparation of a Sn@SnO2@C@MoS2 composite as a high-performance anode material for lithium-ion batteries

2016 ◽  
Vol 4 (19) ◽  
pp. 7185-7189 ◽  
Author(s):  
Youguo Huang ◽  
Qichang Pan ◽  
Hongqiang Wang ◽  
Cheng Ji ◽  
Xianming Wu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Ball Milling ◽  
Hydrothermal Method ◽  
Anode Material ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
Cycling Stability

Sn@SnO2@C nanosheets decorated with MoS2 are prepared via a facile ball milling and hydrothermal method, and the Sn@SnO2@C@MoS2 composite shows high capacity and long-term cycling stability when used as an anode material for lithium-ion batteries.

scholarly journals Three-Dimensional Carbon-Coated LiFePO4 Cathode with Improved Li-Ion Battery Performance

Coatings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1137
Author(s):  
Can Wang ◽  
Xunlong Yuan ◽  
Huiyun Tan ◽  
Shuofeng Jian ◽  
Ziting Ma ◽  
...  
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Economic Benefits ◽  
Synthesis Process ◽  
Carbon Coated

LiFePO4 (LFPO)has great potential as the cathode material for lithium-ion batteries; it has a high theoretical capacity (170 m·A·h·g−1), high safety, low toxicity and good economic benefits. However, low conductivity and a low diffusion rate inhibit its future development. To overcome these weaknesses, three-dimensional carbon-coated LiFePO4 that incorporates a high capacity, superior conductivity and low volume expansion enables faster electron transport channels. The use of Cetyltrimethyl Ammonium Bromid (CTAB) modification only requires a simple water bath and sintering, without the need to add a carbon source in the LFPO synthesis process. In this way, the electrode shows excellent reversible capacity, as high as 159.8 m·A·h·g−1 at 2 C, superior rate capability with 97.3 m·A·h·g−1at 5 C and good cycling ability, preserving ~84.2% capacity after 500 cycles. By increasing the ion transport rate and enhancing the structural stability of LFPO nanoparticles, the LFPO-positive electrode achieves excellent initial capacity and cycle life through cost-effective and easy-to-implement carbon coating. This simple three-dimensional carbon-coated LiFePO4 provides a new and simple idea for obtaining comprehensive and high-performance electrode materials in the field of lithium cathode materials.

Synthesis of Nitrogen and Phosphorus Dual-Doped Graphene Oxide as High-Performance Anode Material for Lithium-Ion Batteries

2020 ◽  
Vol 20 (12) ◽  
pp. 7673-7679
Author(s):  
Ke Wang ◽  
Zhi Li
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Nitrogen And Phosphorus ◽  
Xrd Pattern ◽  
Ion Storage ◽  
Doped Graphene

Nitrogen and phosphorus dual-doped graphene oxide was prepared by directly calcining a mixture of pure graphene oxide, urea (nitrogen source), and 1,2-bis(diphenylphosphino)methane (phosphorous source). The morphology and composition of the obtained dual-doped graphene oxide were confirmed by SEM, TEM, XRD pattern, Raman spectrum, and XPS. The nitrogen and phosphorous dual-doped graphene oxide was tested as an anode material of lithium-ion batteries (LIBs). The cycle and rate performance of the dual-doped graphene oxide were also examined. The dualdoped graphene oxide exhibited a superior initial discharge capacity of 2796 mAh·g−1 and excellent reversible capacity of 1200 mAh·g−1 at a current density of 100 mA·g−1 after 200 charge/discharge cycles, suggesting that the dual-doping of nitrogen and phosphorous is an effective way to enhance lithium-ion storage for graphene oxide.

Fabrication of Mesoporous Graphene@Ag@TiO2 Composite Nanofibers Via Electrospinning as Anode Materials for High-Performance Li-Ion Batteries

NANO ◽  
2021 ◽  
pp. 2150119
Author(s):  
M. M. Xia ◽  
J. Li ◽  
Y. Y. Zhang ◽  
D. N. Kang ◽  
Y. L. Zhang
Keyword(s):  
Anode Material ◽  
Discharge Capacity ◽  
Anode Materials ◽  
High Performance ◽  
Composite Nanofibers ◽  
Electrochemical Impedance ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
One Dimensional ◽  
Practical Applications

Nanosized TiO2 has been actively developed as a low-cost and environment-friendly anode material for lithium-ion batteries (LIBs), but its poor electronic conductivity seriously restricts its practical applications. This drawback is addressed in this work by the fabrication of one-dimensional mesoporous graphene@Ag@TiO2 composite nanofibers as anode materials for high-performance LIBs. The materials were prepared via electrospinning combined with annealing treatment, and the effects of graphene addition on the microstructure and electrochemical performance of the resulting mesoporous graphene@Ag@TiO2 nanofibers were investigated in detail. Ag@TiO2 nanofibers with the optimal amount of graphene displayed a maximum initial discharge capacity of [Formula: see text] at [Formula: see text] and retained a discharge capacity of [Formula: see text] at [Formula: see text] after 100 cycles. These results reflect the excellent cycling stability of the material. The average specific discharge capacity of the nanofibers ([Formula: see text] at [Formula: see text] was two-fold higher than that of samples without graphene, and their discharge capacity returned to [Formula: see text] (approximately [Formula: see text] for other nanofibers) when the current density was recovered to the initial value ([Formula: see text]. Electrochemical impedance spectroscopic measurements confirmed that the conductivity of the electrode was [Formula: see text], which is higher than that of bare mesoporous Ag@TiO2 ([Formula: see text]). Thus, one-dimensional mesoporous graphene@Ag@TiO2 nanofibers can be regarded as a promising anode material for LIBs.

scholarly journals 3D Flower-Like Hierarchitectures Constructed by SnS/SnS2Heterostructure Nanosheets for High-Performance Anode Material in Lithium-Ion Batteries

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Zhiguo Wu ◽  
Fengyi Wang ◽  
Shiyong Zuo ◽  
Shuankui Li ◽  
Baisong Geng ◽  
...  
Keyword(s):  
Lithium Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Three Dimensional ◽  
High Capacity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
One Pot ◽  
Long Cycle Life ◽  
20 Nm

Sn chalcogenides, including SnS, Sn2S3, and SnS2, have been extensively studied as anode materials for lithium batteries. In order to obtain one kind of high capacity, long cycle life lithium batteries anode materials, three-dimensional (3D) flower-like hierarchitectures constructed by SnS/SnS2heterostructure nanosheets with thickness of ~20 nm have been synthesized via a simple one-pot solvothermal method. The obtained samples exhibit excellent electrochemical performance as anode for Li-ion batteries (LIBs), which deliver a first discharge capacity of 1277 mAhg−1and remain a reversible capacity up to 500 mAhg−1after 50 cycles at a current of 100 mAg−1.

Heteroatom doped porous carbon derived from hair as an anode with high performance for lithium ion batteries

RSC Advances ◽  
2014 ◽  
Vol 4 (109) ◽  
pp. 63784-63791 ◽  
Author(s):  
Junke Ou ◽  
Yongzhi Zhang ◽  
Li Chen ◽  
Hongyan Yuan ◽  
Dan Xiao
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Porous Carbon ◽  
Human Hair ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Superior Performance ◽  
High Reversible Capacity

The HDPC derived from human hair shows superior performance as an anode material for LIBs with high reversible capacity (1331 mA h g−1 at 0.1 A g−1) and excellent rate capability (205 mA h g−1 at 10 A g−1).

NiFe saponite as a new anode material for high-performance lithium-ion batteries

2020 ◽  
Vol 8 (14) ◽  
pp. 6539-6545
Author(s):  
Jian Zhang ◽  
Qing Yin ◽  
Jianeng Luo ◽  
Jingbin Han ◽  
Lirong Zheng ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
Discharge Density ◽  
A Charge ◽  
First Time ◽  
Charge Discharge

NiFe saponite was discovered for the first time as a new anode material for high-performance lithium-ion batteries, delivering a high capacity of 646 mA h g−1 after 1000 cycles with a charge/discharge density of 500 mA g−1.

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