A Quadruple-Hydrogen-Bonded Supramolecular Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries

Zhang, Guangzhao1,2; Yang, Yu1,3; Chen, Yunhua4; Huang, Jun5; Zhang, Tian1; Zeng, Hongbo5; Wang, Chaoyang2; Liu, Gao6,7; Deng, Yonghong1

2018-07-19

10.1002/smll.201801189

Small   影响因子和分区

1613-6810

1613-6829

With extremely high specific capacity, silicon has attracted enormous interest as a promising anode material for next-generation lithium-ion batteries. However, silicon suffers from a large volume variation during charge/discharge cycles, which leads to the pulverization of the silicon and subsequent separation from the conductive additives, eventually resulting in rapid capacity fading and poor cycle life. Here, it is shown that the utilization of a self-healable supramolecular polymer, which is facilely synthesized by copolymerization of tert-butyl acrylate and an ureido-pyrimidinone monomer followed by hydrolysis, can greatly reduce the side effects caused by the volume variation of silicon particles. The obtained polymer is demonstrated to have an excellent self-healing ability due to its quadruple-hydrogen-bonding dynamic interaction. An electrode using this self-healing supramolecular polymer as binder exhibits an initial discharge capacity as high as 4194 mAh g(-1) and a Coulombic efficiency of 86.4%, and maintains a high capacity of 2638 mAh g(-1) after 110 cycles, revealing significant improvement of the electrochemical performance in comparison with that of Si anodes using conventional binders. The supramolecular binder can be further applicable for silicon/carbon anodes and therefore this supramolecular strategy may increase the choice of amendable binders to improve the cycle life and energy density of high-capacity Li-ion batteries.

lithium-ion batteries quadruple hydrogen bonding self-healing binders silicon anodes supramolecular polymers

SCI ; EI

英语

第一 ; 通讯

Fundamental Research Funds for the Central Universities[2017MS074]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000439876000007

WILEY-V C H VERLAG GMBH

20183005592743

Anodes ; Binders ; Charging (batteries) ; Electric discharges ; Hydrogen ; Hydrogen bonds ; Ions ; Polymers ; Silicon ; Silicon batteries ; Supramolecular chemistry

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Electricity: Basic Concepts and Phenomena:701.1 ; Electric Batteries:702.1 ; Secondary Batteries:702.1.2 ; Electron Tubes:714.1 ; Physical Chemistry:801.4 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Polymeric Materials:815.1

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.South China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Guangdong, Peoples R China
3.South Univ Sci & Technol China, Acad Adv Interdisciplinary Studies, Shenzhen, Peoples R China
4.South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
5.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada
6.Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Lawrence, KS 94720 USA
7.Lawrence Berkeley Natl Lab, Adv Light Source, Lawrence, KS 94720 USA

Zhang, Guangzhao,Yang, Yu,Chen, Yunhua,et al. A Quadruple-Hydrogen-Bonded Supramolecular Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries[J]. Small,2018,14(29).

Zhang, Guangzhao.,Yang, Yu.,Chen, Yunhua.,Huang, Jun.,Zhang, Tian.,...&Deng, Yonghong.(2018).A Quadruple-Hydrogen-Bonded Supramolecular Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries.Small,14(29).

Zhang, Guangzhao,et al."A Quadruple-Hydrogen-Bonded Supramolecular Binder for High-Performance Silicon Anodes in Lithium-Ion Batteries".Small 14.29(2018).