Approaching Theoretical Specific Capacity of Iron-Rich Lithium Iron Silicate Using Graphene-incorporation and Fluoride-doing

2022 ◽  
Author(s):  
Tianwei Liu ◽  
Yadong Liu ◽  
Yikang Yu ◽  
Yang Ren ◽  
Chengjun Sun ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Iron Silicate ◽  
Environmental Friendliness ◽  
Theoretical Specific Capacity

The lithium iron silicate, Li2FeSiO4, is a promising cathode material for lithium ion batteries due to its high theoretical specific capacity, earth abundance, low cost, and environmental friendliness. The challenges...

scholarly journals Improvement of long-term cycling performance of high-nickel cathode materials by ZnO coating

2021 ◽  
Vol 10 (1) ◽  
pp. 210-220
Author(s):  
Fangfang Wang ◽  
Ruoyu Hong ◽  
Xuesong Lu ◽  
Huiyong Liu ◽  
Yuan Zhu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Solid Phase ◽  
Low Cost ◽  
Specific Capacity ◽  
High Capacity ◽  
Lithium Ion ◽  
Side Reaction ◽  
Chemical Route ◽  
High Nickel

Abstract The high-nickel cathode material of LiNi0.8Co0.15Al0.05O2 (LNCA) has a prospective application for lithium-ion batteries due to the high capacity and low cost. However, the side reaction between the electrolyte and the electrode seriously affects the cycling stability of lithium-ion batteries. In this work, Ni2+ preoxidation and the optimization of calcination temperature were carried out to reduce the cation mixing of LNCA, and solid-phase Al-doping improved the uniformity of element distribution and the orderliness of the layered structure. In addition, the surface of LNCA was homogeneously modified with ZnO coating by a facile wet-chemical route. Compared to the pristine LNCA, the optimized ZnO-coated LNCA showed excellent electrochemical performance with the first discharge-specific capacity of 187.5 mA h g−1, and the capacity retention of 91.3% at 0.2C after 100 cycles. The experiment demonstrated that the improved electrochemical performance of ZnO-coated LNCA is assigned to the surface coating of ZnO which protects LNCA from being corroded by the electrolyte during cycling.

Enhanced electrochemical performance of lithium ion batteries using Sb2S3 nanorods wrapped in graphene nanosheets as anode materials

Nanoscale ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 3159-3165 ◽  
Author(s):  
Yucheng Dong ◽  
Shiliu Yang ◽  
Zhenyu Zhang ◽  
Jong-Min Lee ◽  
Juan Antonio Zapien
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Graphene Nanosheets ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Lithium Insertion ◽  
Insertion Reactions ◽  
Theoretical Specific Capacity ◽  
Enhanced Electrochemical Performance

Antimony sulfide can be used as a promising anode material for lithium ion batteries due to its high theoretical specific capacity derived from sequential conversion and alloying lithium insertion reactions.

Modification of High Potential, High Capacity Li2FeP2O7 Cathode Material for Lithium Ion Batteries

2012 ◽  
Vol 1440 ◽  
Author(s):  
Jiajia Tan ◽  
Ashutosh Tiwari
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Electrochemical Impedance ◽  
Specific Capacity ◽  
High Capacity ◽  
Lithium Ion ◽  
Discharge Rates ◽  
Electronic Conductivities ◽  
Fast Discharge

ABSTRACTLi2FeP2O7 is a newly developed polyanionic cathode material for high performance lithium ion batteries. It is considered very attractive due to its large specific capacity, good thermal and chemical stability, and environmental benignity. However, the application of Li2FeP2O7 is limited by its low ionic and electronic conductivities. To overcome the above problem, a solution-based technique was successfully developed to synthesize Li2FeP2O7 powders with very fine and uniform particle size (< 1 μm), achieving much faster kinetics. The obtained Li2FeP2O7 powders were tested in lithium ion batteries by measurements of cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge/discharge cycling. We found that the modified Li2FeP2O7 cathode could maintain a relatively high capacity even at fast discharge rates.

Preparation of reduced carbon-wrapped carbon–sulfur composite as cathode material of lithium–sulfur batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (114) ◽  
pp. 93926-93936 ◽  
Author(s):  
Xuebing Yang ◽  
Wen Zhu ◽  
Guobao Cao ◽  
Xudong Zhao
Keyword(s):  
Cathode Material ◽  
Low Cost ◽  
Specific Capacity ◽  
Lithium Sulfur Batteries ◽  
Theoretical Specific Capacity ◽  
Lithium Sulfur

Sulfur is a promising cathode material for lithium–sulfur batteries as it possesses high theoretical specific capacity and low cost.

Preparation of a carbon nanofibers–carbon matrix–sulfur composite as the cathode material of lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 7159-7171 ◽  
Author(s):  
Xuebing Yang ◽  
Wen Zhu ◽  
Guobao Cao ◽  
Xudong Zhao
Keyword(s):  
Cathode Material ◽  
Carbon Nanofibers ◽  
Lithium Batteries ◽  
Low Cost ◽  
Specific Capacity ◽  
Carbon Matrix ◽  
Lithium Sulfur Batteries ◽  
Theoretical Specific Capacity ◽  
Lithium Sulfur

Sulfur is a promising cathode material for lithium batteries as it possesses high theoretical specific capacity and low cost.

scholarly journals Facile Synthesis of Solvent Sensitive Fluorinated Graphene Nanoscrolls and Application as a Cathode Material for Lithium Ion Batteries

2020 ◽  
Author(s):  
Guozhong Liu ◽  
Weihong Wan ◽  
Jinsheng Cheng ◽  
Litianlun Xu ◽  
Zhihe Chen ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Reaction System ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Graphene Nanoscrolls ◽  
Fluorinated Graphene

In this work, fluorinated graphene nanoscrolls (FGN) were synthesized via facile chemical methods under simple and mild conditions. Interestingly, the formation of the featured FGN was significantly solvent sensitive. Experimental results indicated that in the presence of aprotic solvent, for example, N,N dimethylformamide (DMF), the reaction system inclined to form the interesting FGN nanostructures. The structure and morphology of the prepared FGN were detailed characterized by atomic force microscopy (AFM), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD) etc. The obtained FGN was used as a cathode material for primary lithium ion batteries with superior discharge specific capacity (eg. 979.3 mAhg-1), stable discharge platform and high energy density (eg. 2287.9 Wh kg-1), which fosters it a high density, low cost and durable candidate for cathode material for lithium ion batteries..

scholarly journals Electrochemically Inert Li2MnO3: The Key to Improving the Cycling Stability of Li-Rich Manganese Oxide Used in Lithium-Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4751
Author(s):  
Lian-Bang Wang ◽  
He-Shan Hu ◽  
Wei Lin ◽  
Qing-Hong Xu ◽  
Jia-Dong Gong ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Manganese Oxide ◽  
Lithium Ion Batteries ◽  
Retention Rate ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Structural Defects ◽  
Hydrothermal Route

Lithium-rich manganese oxide is a promising candidate for the next-generation cathode material of lithium-ion batteries because of its low cost and high specific capacity. Herein, a series of xLi2MnO3·(1 − x)LiMnO2 nanocomposites were designed via an ingenious one-step dynamic hydrothermal route. A high concentration of alkaline solution, intense hydrothermal conditions, and stirring were used to obtain nanoparticles with a large surface area and uniform dispersity. The experimental results demonstrate that 0.072Li2MnO3·0.928LiMnO2 nanoparticles exhibit a desirable electrochemical performance and deliver a high capacity of 196.4 mAh g−1 at 0.1 C. This capacity was maintained at 190.5 mAh g−1 with a retention rate of 97.0% by the 50th cycle, which demonstrates the excellent cycling stability. Furthermore, XRD characterization of the cycled electrode indicates that the Li2MnO3 phase of the composite is inert, even under a high potential (4.8 V), which is in contrast with most previous reports of lithium-rich materials. The inertness of Li2MnO3 is attributed to its high crystallinity and few structural defects, which make it difficult to activate. Hence, the final products demonstrate a favorable electrochemical performance with appropriate proportions of two phases in the composite, as high contents of inert Li2MnO3 lower the capacity, while a sufficient structural stability cannot be achieved with low contents. The findings indicate that controlling the composition through a dynamic hydrothermal route is an effective strategy for developing a Mn-based cathode material for lithium-ion batteries.

Facile synthesis of vanadyl acetate one-dimensional nanobelts toward a novel anode for lithium storage

2021 ◽  
Author(s):  
Ni Wen ◽  
Siyuan Chen ◽  
xiaolong Li ◽  
Ke Zhang ◽  
Jingjie Feng ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Lithium Ion Batteries ◽  
Transition Metal Oxides ◽  
Anode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Facile Synthesis ◽  
Lithium Storage ◽  
One Dimensional ◽  
Theoretical Specific Capacity

Transition metal oxides (TMOs) are prospective anode materials for lithium-ion batteries (LIBs) owing to their high theoretical specific capacity. Whereas, the inherent low conductivity of TMOs restricts its application. Given...

High-rate capability LiFePO4/C cathode assisted with modulated band structures

2021 ◽  
Author(s):  
Li Yang ◽  
Ye Tian ◽  
Jun Chen ◽  
Jinqiang Gao ◽  
Long Zhen ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Low Cost ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
Practical Application ◽  
High Rate Capability ◽  
Band Structures

As a high-safety and low-cost cathode material for lithium-ion batteries, LiFePO4 is predominately suffered from undesirable rate performance arising from its inferior conductivity in the practical application. Herein, LiFePO4 modified...

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