Flexible polyimides through one-pot synthesis as water-soluble binders for silicon anodes in lithium ion batteries

Yao, Dahua1,2; Yang, Yu2; Deng, Yonghong2; Wang, Chaoyang1

2018-03

10.1016/j.jpowsour.2017.12.086

JOURNAL OF POWER SOURCES   影响因子和分区

0378-7753

1873-2755

A series of polyimides, which contain polyethylene glycol (PEG) segments with different molecular weight in the polymer chains, are synthesized through a facile one-pot method and characterized by Fourier transform infrared spectroscopy and hydrogen nuclear magnetic resonance spectroscopy. The main part of polyimides is originated from trimellitic anhydride chloride (TMAC) and 4,4'-methylenedianiline, onto which PEG segments are introduced through an esterification reaction with TMAC. These obtained polyimides, which acquire excellent water solubility after being neutralized by triethylamine, are applied as water-soluble binders to silicon negative electrodes for lithium ion batteries, and significantly improve the electrochemical performance of silicon anodes. Specially, the PI-200 (polyimide copolymerized with PEG-200) based silicon electrode exhibits a high initial discharge capacity of 2989.7 mAh g(-1) and remains about 2235.5 mAh g(-1) after 200 cycles at the current density of 0.1 C (420 mA g(-1)).

Polyimide Polyethylene glycol Silicon negative electrode binder Water-soluble Lithium ion battery One-pot method

SCI ; EI

英语

通讯

Natural Science Foundation of Guangdong Province[2016A030310461]

Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000427217200004

ELSEVIER SCIENCE BV

20180304648182

Anodes ; Binders ; Chlorine compounds ; Electric discharges ; Electrochemical electrodes ; Esterification ; Fourier series ; Fourier transform infrared spectroscopy ; Ions ; Nuclear magnetic resonance spectroscopy ; Polyethylene glycols ; Polyethylene oxides ; Polyethylenes ; Polyimides ; Silicon ; Silicon batteries

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electricity: Basic Concepts and Phenomena:701.1 ; Electric Batteries:702.1 ; Electron Tubes:714.1 ; Chemistry:801 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Polymers:815.1.1 ; Mathematical Transformations:921.3

MATERIALS SCIENCE

Web of Science

1.South China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Guangdong, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Yao, Dahua,Yang, Yu,Deng, Yonghong,et al. Flexible polyimides through one-pot synthesis as water-soluble binders for silicon anodes in lithium ion batteries[J]. JOURNAL OF POWER SOURCES,2018,379:26-32.

Yao, Dahua,Yang, Yu,Deng, Yonghong,&Wang, Chaoyang.(2018).Flexible polyimides through one-pot synthesis as water-soluble binders for silicon anodes in lithium ion batteries.JOURNAL OF POWER SOURCES,379,26-32.

Yao, Dahua,et al."Flexible polyimides through one-pot synthesis as water-soluble binders for silicon anodes in lithium ion batteries".JOURNAL OF POWER SOURCES 379(2018):26-32.