scholarly journals Low cost and environmentally benign crack-blocking structures for long life and high power Si electrodes in lithium ion batteries

2015 ◽  
Vol 3 (5) ◽  
pp. 2036-2042 ◽  
Author(s):  
Min Ling ◽  
Hui Zhao ◽  
Xingcheng Xiaoc ◽  
Feifei Shi ◽  
Mingyan Wu ◽  
...  

A graphical illustration of the gum arabic (GA) and polyacrylic acid (PAA) composite binder.

2006 ◽  
Vol 973 ◽  
Author(s):  
Shijun Wang ◽  
M. Stanley Whittingham

ABSTRACTThis study focusses on optimizing the parameters of the hydrothermal synthesis to produce iron phosphates for lithium ion batteries, with an emphasis on pure LiFePO4 with the olivine structure and compounds containing a higher iron:phosphate ratio. Lithium iron phosphate (LiFePO4) is a promising cathode candidate for lithium ion batteries due to its high theoretical capacity, environmentally benign and the low cost of starting materials. Well crystallized LiFePO4 can be successfully synthesized at temperatures above 150 °C. The addition of a reducing agent, such as hydrazine, is essential to minimize the oxidation of ferrous (Fe2+) to ferric (Fe3+) in the final compound. The morphology of LiFePO4 is highly dependent on the pH of the initial solution. This study also investigated the lipscombite iron phosphates of formula Fe1.33PO4OH. This compound has a log-like structure formed by Fe-O octahedral chains. The chains are partially occupied by the Fe3+ sites, and these iron atoms and some of the vacancies can be substituted by other cations. Most of the protons can be ion-exchanged for lithium, and the electrochemical capacity is much increased.


2013 ◽  
pp. 277-290
Author(s):  
Zonghai Chen ◽  
I. Belharouak ◽  
Yang-Kook Sun ◽  
Khalil Amine

2020 ◽  
Vol 32 ◽  
pp. 101856
Author(s):  
Yuehua Weng ◽  
Guorong Chen ◽  
Fei Dou ◽  
Xianhuan Zhuang ◽  
Qiyu Wang ◽  
...  

ACS Omega ◽  
2020 ◽  
Vol 5 (27) ◽  
pp. 16440-16447
Author(s):  
Minghang Xu ◽  
Jiaojiao Ma ◽  
Guiling Niu ◽  
Hongxun Yang ◽  
Mengfei Sun ◽  
...  

Author(s):  
Yan Cui ◽  
Jiahui Chen ◽  
Jingyang Zhao ◽  
zhen Ma ◽  
Yuming Tan ◽  
...  

Abstract Water-soluble green cathode binders are developed to increase the performance of 18650 type LiNi0.5Mn0.3Co0.2O2 (NMC532) lithium-ion batteries (LIBs). Using four basal substances to prepare the composite binders, it is indicated that the cathode with lithium carboxymethyl cellulose (CMCLi)-polyacrylic acid/acrylate copolymer (type 306F) composite binder (Marked as Binder C) avoids the corrosion of aluminum substrate, and exhibits stronger adhesive force and better electrolyte adsorption capacity compared to other cathodes with PVDF binder and single aqueous binders. In particular, the electrochemical performance of the batteries with Binder C is also improved, initial specific capacity of 161.5 mAh g-1 at 0.2 C and retention capacity of 88.9% at 1 C after 1200 cycles are obtained. The batteries with Binder C also exhibit enhanced high-temperature storage performance, there is 97.9% residual capacity when the fully charged batteries are stored in 60 °C for 14 days. The enhanced performance is mainly attributed to the chemical stability and bonding ability of polyacrylic acid/acrylate copolymer and better conduction at the liquid-solid interface caused by CMCLi. These results indicate that Binder C has promising application prospects in the NMC532 cathode, and also provide a reference for the green production of NMC-based LIBs.


2013 ◽  
Vol 244 ◽  
pp. 469-475 ◽  
Author(s):  
Norio Takami ◽  
Hiroki Inagaki ◽  
Yoshinao Tatebayashi ◽  
Hidesato Saruwatari ◽  
Keizoh Honda ◽  
...  

RSC Advances ◽  
2017 ◽  
Vol 7 (68) ◽  
pp. 42627-42633 ◽  
Author(s):  
Pan Wu ◽  
Ming-Hui Sun ◽  
Yong Yu ◽  
Zhao Peng ◽  
Shimeles T. Bulbula ◽  
...  

Lithium–Sulfur (Li–S) batteries with high theoretical specific energy, environmentally benign and low cost are considered to be one of the most promising next-generation energy-storage systems compared with conventional lithium-ion batteries.


Carbon ◽  
2017 ◽  
Vol 117 ◽  
pp. 489
Author(s):  
Ai-xiu Bu ◽  
Yong Tan ◽  
Ruo-pian Fang ◽  
Feng Li ◽  
Song-feng Pei ◽  
...  

2015 ◽  
Vol 3 (42) ◽  
pp. 21219-21226 ◽  
Author(s):  
Long Xu ◽  
Peiyu Hou ◽  
Yantao Zhang ◽  
Hongzhou Zhang ◽  
Dawei Song ◽  
...  

A green, highly efficient and low cost ligand oxalate anion is successfully introduced to prepare spherical precursors for high-energy, high-power and durable cathode materials.


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