scholarly journals Enhanced Electrochemical Performance of Sb2O3 as an Anode for Lithium-Ion Batteries by a Stable Cross-Linked Binder

2019 ◽  
Vol 9 (13) ◽  
pp. 2677 ◽  
Author(s):  
Yong Liu ◽  
Haichao Wang ◽  
Keke Yang ◽  
Yingnan Yang ◽  
Junqing Ma ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Large Volume ◽  
Polyvinylidene Fluoride ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Electrochemical Stability ◽  
Esterification Reaction ◽  
Conductive Agent ◽  
Enhanced Electrochemical Performance

A binder plays an important role in lithium-ion batteries (LIBs), especially for the electrode materials which have large volume expansion during charge and discharge. In this work, we designed a cross-linked polymeric binder with an esterification reaction of Sodium Carboxymethyl Cellulose (CMC) and Fumaric Acid (FA), and successfully used it in an Sb2O3 anode for LIBs. Compared with conventional binder polyvinylidene fluoride (PVDF) and CMC, the new cross-linked binder improves the electrochemical stability of the Sb2O3 anode. Specifically, with CMC-FA binder, the battery could deliver ~611.4 mAh g−1 after 200 cycles under the current density of 0.2 A g−1, while with PVDF or CMC binder, the battery degraded to 265.1 and 322.3 mAh g−1, respectively. The improved cycling performance is mainly due to that the cross-linked CMC-FA network could not only efficiently improve the contact between Sb2O3 and conductive agent, but can also buffer the large volume charge of the electrode during repeated charge/discharge cycles.

Self-assembly synthesis of nitrogen-doped mesoporous carbons used as high-performance electrode materials in lithium-ion batteries and supercapacitors

2017 ◽  
Vol 41 (21) ◽  
pp. 12901-12909 ◽  
Author(s):  
Chunfeng Shao ◽  
Ziqiang Wang ◽  
Errui Wang ◽  
Shujun Qiu ◽  
Hailiang Chu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Self Assembly ◽  
High Performance ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Mesoporous Carbons ◽  
Nitrogen Doped ◽  
First Time ◽  
Enhanced Electrochemical Performance

Guanine was, for the first time, used as a nitrogen source during the synthesis of nitrogen-doped porous carbons (NMCs) with enhanced electrochemical performance.

Novel Co3O4/Carbon Nanofiber Composite Electrode with High Li-Storage Capacity for Lithium Ion Batteries

2011 ◽  
Vol 197-198 ◽  
pp. 1113-1116 ◽  
Author(s):  
Wen Li Yao ◽  
Jin Qing Chen ◽  
An Yun Li ◽  
Xin Bing Chen
Keyword(s):  
Composite Materials ◽  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Storage Capacity ◽  
Carbon Nanofiber ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Li Storage

The platelike Co3O4/carbon nanofiber (CNF) composite materials were synthesized by the calcination of β-Co(OH)2/CNF precursor prepared by a surfactant-free hydrothermal method. As negative electrode materials for lithium-ion batteries, the platelike Co3O4/CNF composites can deliver a high reversible capacity of 900 mAh g-1 for a life extending over hundreds of cycles at a current density of 100 mA g-1. The high Li-storage capacity and excellent cycling performance for Co3O4/CNF composite materials may mainly attribute to the beneficial effect of the CNFs addition on enhancing structural stability and electrical conductivity of Co3O4 platelets.

Flexible Graphene Paper as a Binder-Free Anode Material for Lithium Ion Batteries

2015 ◽  
Vol 1095 ◽  
pp. 333-340
Author(s):  
Chuan Ning Yang ◽  
Yong Quan Qing ◽  
Chang Sheng Liu
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Cycling Performance ◽  
High Temperature Treatment ◽  
Great Promise ◽  
Binder Free ◽  
Graphene Paper

Graphene paper (GP) with layered structure and highly conductive network is fabricated by a facile technique of vacuum filtration and studied as a single-component and binder-free anode of lithium ion batteries (LIBs). The process of fabrication of GP without any binder and high-temperature treatment, in the meantime, great improvement in both the capacity and cycling performance of the GP electrodes have compared with other kinds of traditional graphite electrode materials. Given the simplifying anode fabrication, low manufacturing costs and many electrochemical properties of the GP anode, it is regarded as an excellent anode material of LIB with great promise for its both excellent cycling performance and electrochemical properties. The specific capacity can reach to over 200 mAhg-1after 60 charge-discharge cycles under the current rate of 50 mAg-1.

scholarly journals Fabrication of GeS-graphene composites for electrode materials in lithium-ion batteries

2021 ◽  
Author(s):  
Chen Li ◽  
Xiaoyun Xu ◽  
Tingting Song ◽  
Xinyu Zhu ◽  
Yongtao Li ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Electrode Materials ◽  
Discharge Rate ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Battery Materials ◽  
Graphene Composite ◽  
Potential Electrode

Abstract The new electrode materials are critically important for the development of lithium-ion batteries (LIBs). Herein, we report the synthesis of GeS-graphene composite (GeS-G) by facile sonication which exhibits the excellent cycling performance for lithium-ion batteries. Under the condition of change-discharge rate of 50 mA·g-1 and voltage window of 0.005-3 V, the specific capacity of GeS-G is 170 mAh·g-1 after 100 cycles, which is significantly higher than that of pure GeS. The results of the present work imply that the nanostructure of GeS-G is the potential electrode materials for application in high-performance lithium-ion batteries and enrich the gene bank of lithium-ion battery materials.

scholarly journals Studies of Nickel-Rich LiNi0.85Co0.10Mn0.05O2 Cathode Materials Doped with Molybdenum Ions for Lithium-Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2070
Author(s):  
Francis Amalraj Susai ◽  
Daniela Kovacheva ◽  
Tatyana Kravchuk ◽  
Yaron Kauffmann ◽  
Sandipan Maiti ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Ammonium Molybdate ◽  
X Ray Diffraction ◽  
Voltage Hysteresis ◽  
A Minor

In this work, we continued our systematic investigations on synthesis, structural studies, and electrochemical behavior of Ni-rich materials Li[NixCoyMnz]O2 (x + y + z = 1; x ≥ 0.8) for advanced lithium-ion batteries (LIBs). We focused, herein, on LiNi0.85Co0.10Mn0.05O2 (NCM85) and demonstrated that doping this material with high-charge cation Mo6+ (1 at. %, by a minor nickel substitution) results in substantially stable cycling performance, increased rate capability, lowering of the voltage hysteresis, and impedance in Li-cells with EC-EMC/LiPF6 solutions. Incorporation of Mo-dopant into the NCM85 structure was carried out by in-situ approach, upon the synthesis using ammonium molybdate as the precursor. From X-ray diffraction studies and based on our previous investigation of Mo-doped NCM523 and Ni-rich NCM811 materials, it was revealed that Mo6+ preferably substitutes Ni residing either in 3a or 3b sites. We correlated the improved behavior of the doped NCM85 electrode materials in Li-cells with a partial Mo segregation at the surface and at the grain boundaries, a tendency established previously in our lab for the other members of the Li[NixCoyMnz]O2 family.

The Effect of Electrode Binders to Electrochemical Properties of Negative Electrode Materials

2021 ◽  
Vol 105 (1) ◽  
pp. 35-42
Author(s):  
Andras Zsigmond ◽  
Jiri Libich
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Material ◽  
Polyvinylidene Fluoride ◽  
Electrode Materials ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Natural Graphite ◽  
Charge Discharge

This paper deals with various types of electrode binders used in lithium-ion batteries. The electrode binders play important role in battery, the binders directly affect almost all aspect of electrode characteristics. As the one of the most import parameter is the electrode charge-discharge long term stability. The three binders have been tested in context of negative electrode in lithium-ion battery. The natural graphite has been chosen as an active electrode material. The natural graphite takes majority as negative electrode material on commercial market with lithium-ion batteries. The three kind of binders was established for testing: polyvinylidene fluoride (PVDF), styrene-butadiene rubber (SBR) and polyimide P84. The influence of these binders on charge-discharge stability are evaluated and described in this paper.

Improved cycling stability of nanostructured electrode materials enabled by prelithiation

2010 ◽  
Vol 25 (8) ◽  
pp. 1413-1420 ◽  
Author(s):  
Liqiang Mai ◽  
Lin Xu ◽  
Bin Hu ◽  
Yanhui Gu
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Li Ion Battery ◽  
Electrochemical Investigation ◽  
Nanostructured Electrode ◽  
Before And After ◽  
Battery Electrode ◽  
Li Ion

This review represents recent research on using chemical prelithiation to improve cycling performance of nanostructured electrode materials for lithium ion batteries in our group. We focus on two typical cathode materials, MoO3 nanobelts and FeSe2 nanoflowers. Methods of direct or secondary hydrothermal lithiation of MoO3 nanobelts and FeSe2 nanoflowers are described first, followed by electrochemical investigation of the samples before and after lithiation. Compared with pristine materials, lithiated samples exhibit better cycling capability. Prelithiation of other kinds of materials, such as V2O5, MnO2, etc. is also briefly reviewed. This demonstrates that prelithiation can be a powerful general approach for improving cycling performance of Li-ion battery electrode materials.

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