A polyimide anode with high capacity and superior cyclability for aqueous Na-ion batteries

Deng, Wenwen; Shen, Yifei; Qian, Jiangfeng; Yang, Han

doi:10.1039/c5cc00073d

Cited by 67 publications

(65 citation statements)

References 22 publications

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“…However, there are only a few types of inorganic materials that can store Mg 2+ reversibly, which is considered to be due to the strong reaction between Mg 2+ and the rigid lattice of inorganic crystals caused by the divalent nature of the ion. [209,210] Interestingly, a very recent work shows that the voltage window of aqueous electrolyte can be expanded to ≈3.0 V by employing a highly concentrated aqueous electrolyte, which is probably helpful for enhancing the energy density of organic-based aqueous rechargeable batteries. Recently, Pan et al applied 1,4-polyanthraquinone as a cathode for Mg-ion batteries, which exhibited a stable capacity of 100 mAh g −1 with negligible fading for 100 cycles.…”

Section: Prospect Of Carbonyl Electrodes For Stationary Batteriesmentioning

confidence: 99%

“…Recently, carbonyl-based anodes have also been extended to rechargeable aqueous sodium batteries. [209,210] Interestingly, a very recent work shows that the voltage window of aqueous electrolyte can be expanded to ≈3.0 V by employing a highly concentrated aqueous electrolyte, which is probably helpful for enhancing the energy density of organic-based aqueous rechargeable batteries. [211]…”

Section: Prospect Of Carbonyl Electrodes For Stationary Batteriesmentioning

confidence: 99%

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Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

2017

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Organic carbonyl electrode materials that have the advantages of high capacity, low cost and being environmentally friendly, are regarded as powerful candidates for next-generation stationary and redox flow rechargeable batteries (RFBs). However, low carbonyl utilization, poor electronic conductivity and undesired dissolution in electrolyte are urgent issues to be solved. Here, we summarize a molecular engineering approach for tuning the capacity, working potential, concentration of active species, kinetics, and stability of stationary and redox flow batteries, which well resolves the problems of organic carbonyl electrode materials. As an example, in stationary batteries, 9,10-anthraquinone (AQ) with two carbonyls delivers a capacity of 257 mAh g (2.27 V vs Li /Li), while increasing the number of carbonyls to four with the formation of 5,7,12,14-pentacenetetrone results in a higher capacity of 317 mAh g (2.60 V vs Li /Li). In RFBs, AQ, which is less soluble in aqueous electrolyte, reaches 1 M by grafting -SO H with the formation of 9,10-anthraquinone-2,7-disulphonic acid, resulting in a power density exceeding 0.6 W cm with long cycling life. Therefore, through regulating substituent groups, conjugated structures, Coulomb interactions, and the molecular weight, the electrochemical performance of carbonyl electrode materials can be rationally optimized. This review offers fundamental principles and insight into designing advanced carbonyl materials for the electrodes of next-generation rechargeable batteries.

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Section: Prospect Of Carbonyl Electrodes For Stationary Batteriesmentioning

confidence: 99%

Section: Prospect Of Carbonyl Electrodes For Stationary Batteriesmentioning

confidence: 99%

Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

2017

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“…The redox mechanism of carbonyl compounds is an enolation reaction, and each C═O unit corresponds to the gain and loss of an electron. Owing to the fast kinetics of enolation reaction, carbonyl compounds have high electrochemical reversibility . More importantly, their redox is accompanied by the insertion and extraction of small cations, such as Na + or Li + .…”

Section: Introductionmentioning

confidence: 99%

“…Owing to the fast kinetics of enolation reaction, carbonyl compounds have high electrochemical reversibility. [31][32][33] More importantly, their redox is accompanied by the insertion and extraction of small cations, such as Na + or Li + . Based on the above theory, poly 2,5-dihydroxy-1,4-benzoquinone-3,6-methylene (PDBM) was selected as a model cathode material, which consists of four carbonyl units, and its theoretical specific capacity is highly up to 705 mAh g −1 .…”

mentioning

confidence: 99%

Graphene‐wrapped poly(2,5‐dihydroxy‐1,4‐benzoquinone‐3,6‐methylene) nanoflowers as low‐cost and high‐performance cathode materials for sodium‐ion batteries

et al. 2019

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Summary Graphene‐wrapped poly 2,5‐dihydroxy‐1,4‐benzoquinone‐3,6‐methylene (PDBM) nanocomposites with three‐dimensional nanoflower structures have been successfully prepared through the ultrasonic exfoliation and reassembly process in methanol. Compact distribution of graphene into the nanocomposite has established a three‐dimensional conductive network, which contributes to improved properties on discharge capacity and cycle performance. Composite with 20 wt% graphene was proved the best ratio when used in sodium‐ion batteries. Its initial discharge capacity can achieve 210 at 30 mA g−1. After 100 cycles, the capacity is stable at 121 mAh g−1. The composite featuring highly conductive channels and multidimensional electron transport pathway is synthesized by an easy ultrasonic way, which may be applied in large scales for sodium‐ion batteries.

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“…However, they suffer from poor cycling and sluggish rate performance owing to their high solubility in traditional organic electrolyte and low conductivity [6,7]. Many attempts have been made to suppress the solubility such as polymerization [8][9][10][11][12], electrolyte optimization [13], anchoring on solid substrates [14] and formation of salts [15,16].…”

Section: Introductionmentioning

confidence: 99%

Enhanced adsorption of carbonyl molecules on graphene via π-Li-π interaction: a first-principle study

et al. 2017

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Carbonyl compounds with elements of C, H, and O and reversible redox-active centers are promising electrode materials in rechargeable batteries owing to their high theoretical capacity, structure flexibility and resources abundance. However, the low conductivity and the dissolution of active molecules in organic electrolyte limit the practical application. Immobilizing the carbonyls on graphene provides a simple approach to address these two issues. However, most reported interaction between carbon-based substrates and carbonyl compounds is weak π-π interaction, which is not strong enough to prohibit the detachment of active materials from carbon surface, and thus leading to undesirable cycling performance. Herein, we applied the first principle calculations to study the carbonyls-graphene interaction and found that the weak π-π interaction can be rationally converted to the strong π-Li-π interaction via introducing the groups containing Li atoms. The introduced Li atoms can cooperatively bind with the two aromatic π components through the covalent Li-carbonyl compounds interaction and Li-graphene interaction. The concept of π-Li-π interaction provides a versatile method to suppress the dissolution of active materials and increase the electronic conductivity at the same time, which gains insight into the design of organic electrode materials for rechargeable batteries with high performance.

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A polyimide anode with high capacity and superior cyclability for aqueous Na-ion batteries

Cited by 67 publications

References 22 publications

Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

Molecular Engineering with Organic Carbonyl Electrode Materials for Advanced Stationary and Redox Flow Rechargeable Batteries

Graphene‐wrapped poly(2,5‐dihydroxy‐1,4‐benzoquinone‐3,6‐methylene) nanoflowers as low‐cost and high‐performance cathode materials for sodium‐ion batteries

Enhanced adsorption of carbonyl molecules on graphene via π-Li-π interaction: a first-principle study

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