Rapid and facile synthesis of hierarchically mesoporous TiO2–B with enhanced reversible capacity and rate capability

2018 ◽  
Vol 6 (3) ◽  
pp. 1196-1200 ◽  
Author(s):  
Yubin Liu ◽  
Minghuang Guo ◽  
Zhenwei Liu ◽  
Qiaohua Wei ◽  
Mingdeng Wei
Keyword(s):  
Lithium Ion Batteries ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Mesoporous Tio2 ◽  
Synthetic Route ◽  
Facile Synthesis

A rapid and facile synthetic route has been developed to fabricate hierarchically mesoporous TiO2–B, which is composed of nanoparticles and exhibits enhanced reversible capacity and rate capability in lithium ion batteries.

A comparative study of ordered mesoporous carbons with different pore structures as anode materials for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (53) ◽  
pp. 42922-42930 ◽  
Author(s):  
Diganta Saikia ◽  
Tzu-Hua Wang ◽  
Chieh-Ju Chou ◽  
Jason Fang ◽  
Li-Duan Tsai ◽  
...  
Keyword(s):  
Comparative Study ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Stability ◽  
Mesoporous Carbons ◽  
Ordered Mesoporous Carbons ◽  
Ordered Mesoporous

Ordered mesoporous carbons CMK-3 and CMK-8 with different mesostructures are evaluated as anode materials for lithium-ion batteries. CMK-8 possesses higher reversible capacity, better cycling stability and rate capability than CMK-3.

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.

Synergistic effect between flake graphite and small-sized graphene in lithium storage

2021 ◽  
pp. 2150031
Author(s):  
Hai Li ◽  
Chunxiang Lu
Keyword(s):  
Synergistic Effect ◽  
Lithium Ion Batteries ◽  
Individual Component ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Flake Graphite ◽  
Effective Strategy ◽  
Lithium Storage

As anode material for lithium-ion batteries, graphite has the disadvantage of relatively low specific capacity. In this work, a simple yet effective strategy to overcome the disadvantages by using a composite of flake graphite (FG) and small-sized graphene (SG) has been developed. The FG/SG composite prepared by dispersing FG and SG (90:10 w/w) in ethanol and drying delivers much higher specific capacity than that of individual component except for improved rate capability. More surprisingly, FG/SG composite delivers higher reversible capacity than its theoretical value calculated according to the theoretical capacities of graphite and graphene. Therefore, a synergistic effect between FG and SG in lithium storage is clearly discovered. To explain it, we propose a model that abundant nanoscopic cavities were formed due to physical adhesion between FG and SG and could accommodate extra lithium.

Facile synthesis of one-dimensional LiNi0.8Co0.15Al0.05O2 microrods as advanced cathode materials for lithium ion batteries

2015 ◽  
Vol 3 (26) ◽  
pp. 13648-13652 ◽  
Author(s):  
Naiteng Wu ◽  
Hao Wu ◽  
Wei Yuan ◽  
Shengjie Liu ◽  
Jinyu Liao ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Structural Stability ◽  
Cathode Materials ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Facile Synthesis ◽  
Lithium Storage ◽  
One Dimensional

One-dimensional LiNi0.8Co0.15Al0.05O2 microrods are synthesized through chemical lithiation of mixed Ni, Co, and Al oxalate microrod. The rod-like morphology together with structural stability endows it with superior rate capability and cycle performance for highly reversible lithium storage.

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.

Facile synthesis of MnOx nanoparticles sandwiched between nitrogen-doped carbon plates for lithium ion batteries with stable capacity and high-rate capability

RSC Advances ◽  
2016 ◽  
Vol 6 (23) ◽  
pp. 19522-19530 ◽  
Author(s):  
Xiangyang Zhou ◽  
Tao Bai ◽  
Feng Chen ◽  
JingJing Tang ◽  
Qunchao Liao ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
High Rate Capability ◽  
Facile Synthesis ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

MnOx nanoparticles sandwiched between nitrogen-doped carbon plates architecture (C/MnOx/C) has been successfully synthesized via a step-by-step strategy.

Ultra-small and highly crystallized ZnFe2O4 nanoparticles within double graphene networks for super-long life lithium-ion batteries

2017 ◽  
Vol 5 (22) ◽  
pp. 11188-11196 ◽  
Author(s):  
Longhai Zhang ◽  
Tong Wei ◽  
Jingming Yue ◽  
Lizhi Sheng ◽  
Zimu Jiang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Graphene Sheets ◽  
Spatial Confinement ◽  
Long Life ◽  
Znfe2o4 Nanoparticles ◽  
Novel Strategy ◽  
Superior Cycling Stability

We report a novel strategy for spatial confinement of ultra-small and highly crystallized ZnFe2O4 nanoparticles within double graphene networks constructed by ultra-small and large graphene sheets. The ZnFe2O4/graphene hybrid exhibits a large reversible capacity, excellent rate capability, and superior cycling stability.

High-Performance Anode Materials with Superior Structure of Fe3O4/FeS/rGO Composite for Lithium Ion Batteries

NANO ◽  
2020 ◽  
Vol 15 (10) ◽  
pp. 2050128 ◽  
Author(s):  
Ruirui Gao ◽  
Suqin Wang ◽  
Zhaoxiu Xu ◽  
Hongbo Li ◽  
Shuiliang Chen ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Composite Electrode ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Charging And Discharging Processes ◽  
New Perspective

In this work, we developed a simple one-step hydrothermal method to successfully prepare Fe3O4/FeS-reduced graphene oxide (Fe3O4/FeS/rGO) composite directly, which is a novel Lithium-ion batteries (LIBs) anode material. The characterization of Fe3O4/FeS/rGO composite demonstrates that octahedral Fe3O4/FeS particles are uniformly deposited on the rGO, leading to a strong synergy between them. The excellent structural design can make Fe3O4/FeS/rGO composite to have higher reversible capacity (744.7[Formula: see text]mAh/g at 0.1[Formula: see text]C after 50 cycles), excellent cycling performance and superior rate capability. This outstanding electrochemical behavior can be attributed to the conductivity network of rGO, which improves the composite electrode conductivity, facilitates the diffusion and transfer of ions and prevents the aggregation and pulverization of Fe3O4/FeS particles during the charging and discharging processes. Moreover, the Fe3O4/FeS/rGO electrode surface is covered with a thin solid-electrolyte interface (SEI) film and the octahedral structure of Fe3O4/FeS particles is still clearly visible, which indicates that composite electrode has excellent interface stability. We believe that the design of this composite structure will provide a new perspective for the further study of other transition metal oxides for LIBs.

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