Influence of the Active Material on the Electronic Conductivity of the Positive Electrode in Lithium-Ion Batteries

2019 ◽  
Vol 166 (8) ◽  
pp. A1285-A1290 ◽  
Author(s):  
Hiroki Kondo ◽  
Hiroshi Sawada ◽  
Chikaaki Okuda ◽  
Tsuyoshi Sasaki
Keyword(s):  
Lithium Ion Batteries ◽  
Electronic Conductivity ◽  
Active Material ◽  
Lithium Ion ◽  
Positive Electrode

scholarly journals Surface Modifications of Positive-Electrode Materials for Lithium Ion Batteries

2019 ◽  
Vol 73 (11) ◽  
pp. 880-893 ◽  
Author(s):  
Nam Hee Kwon ◽  
Joanna Conder ◽  
Mohammed Srout ◽  
Katharina M. Fromm
Keyword(s):  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Surface Modifications ◽  
Positive Electrode ◽  
Layered Oxides ◽  
Spinel Type ◽  
Surface Modified ◽  
Positive Electrode Materials

Lithium ion batteries are typically based on one of three positive-electrode materials, namely layered oxides, olivine- and spinel-type materials. The structure of any of them is 'resistant' to electrochemical cycling, and thus, often requires modification/post-treatment to improve a certain property, for example, structural stability, ionic and/or electronic conductivity. This review provides an overview of different examples of coatings and surface modifications used for the positive-electrode materials as well as various characterization techniques often chosen to confirm/detect the introduced changes. It also assesses the electrochemical success of the surface-modified positive-electrode materials, thereby highlighting remaining challenges and pitfalls.

scholarly journals Performance optimization of freestanding MWCNT-LiFePO4 sheets as cathodes for improved specific capacity of lithium-ion batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (30) ◽  
pp. 16566-16573 ◽  
Author(s):  
Rahmat Agung Susantyoko ◽  
Tawaddod Saif Alkindi ◽  
Amarsingh Bhabu Kanagaraj ◽  
Boohyun An ◽  
Hamda Alshibli ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Performance Optimization ◽  
Active Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Positive Electrode

We optimized the specific capacity of freestanding MWCNT-LiFePO4 positive electrode. We demonstrated as high (low) as 90 wt% LiFePO4 active material (10 wt% MWCNTs inactive material). This corresponded to a maximum specific capacity of 153 mA h g−1.

Soft-templated LiFePO4/mesoporous carbon nanosheets (LFP/meso-CNSs) nanocomposite as the cathode material of lithium ion batteries

RSC Advances ◽  
2014 ◽  
Vol 4 (41) ◽  
pp. 21325-21331 ◽  
Author(s):  
Ruofei Wu ◽  
Guofeng Xia ◽  
Shuiyun Shen ◽  
Fengjuan Zhu ◽  
Fengjing Jiang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Mesoporous Carbon ◽  
Electronic Conductivity ◽  
Active Material ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Carbon Nanosheets ◽  
High Electronic Conductivity ◽  
Nano Size

A soft-templated LFP/mesoporous carbon nanosheets (LFP/meso-CNSs) nanocomposite as the cathode of lithium ion batteries displays an excellent high-rate capability and stable cycling property, benefitting from its high electronic conductivity, open mesoporosity, and the nano-size of its active material.

The Reinforcing Effect of Combined Carbon Nanotubes and Acetylene Blacks on the Positive Electrode of Lithium-Ion Batteries

ChemSusChem ◽  
2008 ◽  
Vol 1 (11) ◽  
pp. 911-915 ◽  
Author(s):  
Chiaki Sotowa ◽  
Gaku Origi ◽  
Masataka Takeuchi ◽  
Yoshiyuki Nishimura ◽  
Kenji Takeuchi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Positive Electrode ◽  
Reinforcing Effect

scholarly journals Concentrated LiPF6/PC electrolyte solutions for 5-V LiNi0.5Mn1.5O4 positive electrode in lithium-ion batteries

2016 ◽  
Vol 209 ◽  
pp. 219-224 ◽  
Author(s):  
Takayuki Doi ◽  
Rin Masuhara ◽  
Michihiro Hashinokuchi ◽  
Yusuke Shimizu ◽  
Minoru Inaba
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Electrolyte Solutions ◽  
Positive Electrode

Recent progress in rechargeable lithium batteries with organic materials as promising electrodes

2016 ◽  
Vol 4 (19) ◽  
pp. 7091-7106 ◽  
Author(s):  
Jian Xie ◽  
Qichun Zhang
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Batteries ◽  
Recent Progress ◽  
Electrode Materials ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Positive Electrode ◽  
Rechargeable Lithium Batteries ◽  
Organic Electrode ◽  
Negative Electrode Materials

Different organic electrode materials in lithium-ion batteries are divided into three types: positive electrode materials, negative electrode materials, and bi-functional electrode materials, and are further discussed.

Research Progress and Application of Modified Silicon-Based Anode Materials for Lithium-Ion Batteries

2021 ◽  
Vol 1036 ◽  
pp. 35-44
Author(s):  
Ling Fang Ruan ◽  
Jia Wei Wang ◽  
Shao Ming Ying
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Volume Expansion ◽  
Anode Materials ◽  
Active Material ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Research Progress ◽  
Ion Intercalation ◽  
Silicon Based

Silicon-based anode materials have been widely discussed by researchers because of its high theoretical capacity, abundant resources and low working voltage platform,which has been considered to be the most promising anode materials for lithium-ion batteries. However,there are some problems existing in the silicon-based anode materials greatly limit its wide application: during the process of charge/discharge, the materials are prone to about 300% volume expansion, which will resultin huge stress-strain and crushing or collapse on the anods; in the process of lithium removal, there is some reaction between active material and current collector, which creat an increase in the thickness of the solid phase electrolytic layer(SEI film); during charging and discharging, with the increase of cycle times, cracks will appear on the surface of silicon-based anode materials, which will cause the batteries life to decline. In order to solve these problems, firstly, we summarize the design of porous structure of nanometer sized silicon-based materials and focus on the construction of three-dimensional structural silicon-based materials, which using natural biomass, nanoporous carbon and metal organic framework as structural template. The three-dimensional structure not only increases the channel of lithium-ion intercalation and the rate of ion intercalation, but also makes the structure more stable than one-dimensional or two-dimensional. Secondly, the Si/C composite, SiOx composite and alloying treatment can improve the volume expansion effection, increase the rate of lithium-ion deblocking and optimize the electrochemical performance of the material. The composite materials are usually coated with elastic conductive materials on the surface to reduce the stress, increase the conductivity and improve the electrochemical performance. Finally, the future research direction of silicon-based anode materials is prospected.

Electrochemical Properties of Carbon-Coated NbO2 as a Negative Electrode for Lithium-Ion Batteries

2016 ◽  
Vol 724 ◽  
pp. 87-91 ◽  
Author(s):  
Chang Su Kim ◽  
Yong Hoon Cho ◽  
Kyoung Soo Park ◽  
Soon Ki Jeong ◽  
Yang Soo Kim
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Ball Milling ◽  
Carbon Coating ◽  
Electrochemical Impedance ◽  
Active Material ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Transfer Resistance ◽  
Carbon Coated

We investigated the electrochemical properties of carbon-coated niobium dioxide (NbO2) as a negative electrode material for lithium-ion batteries. Carbon-coated NbO2 powders were synthesized by ball-milling using carbon nanotubes as the carbon source. The carbon-coated NbO2 samples were of smaller particle size compared to the pristine NbO2 samples. The carbon layers were coated non-uniformly on the NbO2 surface. The X-ray diffraction patterns confirmed that the inter-layer distances increased after carbon coating by ball-milling. This lead to decreased charge-transfer resistance, confirmed by electrochemical impedance spectroscopy, allowing electrons and lithium-ions to quickly transfer between the active material and electrolyte. Electrochemical performance, including capacity and initial coulombic efficiency, was therefore improved by carbon coating by ball-milling.

Sign in / Sign up

Export Citation Format

Share Document