Flexible and additive-free organic electrodes for aqueous sodium ion batteries

Yang，Liping1; Wang，Pengyuan2; Zhang，Shangwei3; Wang，Yuanhao4; Zang，Ling5; Zhu，Hui1; Yin，Jiao1; Yang，Hui Ying6

2020-11-21

10.1039/d0ta07267b

Journal of Materials Chemistry A   影响因子和分区

2050-7488

2050-7496

Organic materials with redox activities are promising candidates for aqueous flexible sodium ion storage devices (AFSISDs) due to their mechanical flexibility and low dissolution in aqueous electrolytes. However, the advantages of organic electrodes are not fully exploited due to uncontrollable morphologies with sluggish electrochemical kinetics, and lack of deep understanding about the storage mechanism via in situ technologies. Herein, an interfacial self-assembly strategy is proposed to directly construct PTCDI nanofibers onto flexible ITO substrates by a binder-free approach. Combining in situ Raman spectroscopy and DFT calculations, the Na+ storage mechanism based on an enolization reaction (-CO ↔ -C-O-Na) of two carbonyl groups located in the para position of PTCDI is illuminated. Coupled with an activated carbon cathode, the organic AFSISD delivers an ultrahigh energy density of 83.8 W h kg-1 and a largely improved power density of 3.4 kW kg-1. The as-prepared organic nanofibers show a superior volumetric energy and high power density (i.e., 7.1 mW h cm-3 and 289.7 mW cm-3). This work opens up new horizons for a wide variety of flexible electronics based on organic electrode materials in aqueous neutral electrolytes. This journal is

SCI ; EI

英语

其他

"Western Light" Foundation of Chinese Academy of Sciences[2019-XBQNXZ-A-002] ; National Natural Science Foundation of China[51663016] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2019427] ; Xinjiang Science Foundation for Distinguished Young Scholars[2019Q004][2019Q005] ; Xinjiang Program of Introducing High-Level Talents[E0398801]

Chemistry ; Energy & Fuels ; Materials Science

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

WOS:000589418400027

ROYAL SOC CHEMISTRY

20204709503010

Cathodes ; Flexible electronics ; Virtual storage ; Electrolytes ; Nanofibers ; Redox reactions ; Electrochemical electrodes ; Sodium-ion batteries ; Metal ions ; Self assembly

Metallurgy:531.1 ; Electric Batteries and Fuel Cells:702 ; Secondary Batteries:702.1.2 ; Electronic Equipment, General Purpose and Industrial:715 ; Data Storage, Equipment and Techniques:722.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Solid State Physics:933 ; Materials Science:951

2-s2.0-85096124143

Scopus

1.Laboratory of Environmental Sciences and Technology,Xinjiang Technical Institute of Physics and Chemistry,Key Laboratory of Functional Materials and Devices for Special Environments,Chinese Academy of Sciences,Urumqi,830011,China
2.School of Physical Science and Technology,Xinjiang University,Urumqi,830046,China
3.UFZ Department of Ecological Chemistry,Helmholtz Centre for Environmental Research,Leipzig,Permoserstraße 15,04318,Germany
4.SUSTech Engineering Innovation Center,School of Environmental Science and Engineering,Southern University of Science and Technology,China
5.Nano Institute of Utah,Department of Materials Science and Engineering,University of Utah,Salt Lake City,84112,United States
6.Pillar of Engineering Product Development,Singapore University of Technology and Design,Singapore,8 Somapah Road,487372,Singapore

Yang，Liping,Wang，Pengyuan,Zhang，Shangwei,et al. Flexible and additive-free organic electrodes for aqueous sodium ion batteries[J]. Journal of Materials Chemistry A,2020,8(43):22791-22801.

Yang，Liping.,Wang，Pengyuan.,Zhang，Shangwei.,Wang，Yuanhao.,Zang，Ling.,...&Yang，Hui Ying.(2020).Flexible and additive-free organic electrodes for aqueous sodium ion batteries.Journal of Materials Chemistry A,8(43),22791-22801.

Yang，Liping,et al."Flexible and additive-free organic electrodes for aqueous sodium ion batteries".Journal of Materials Chemistry A 8.43(2020):22791-22801.