Redox active poly(N-vinylcarbazole) for use in rechargeable lithium batteries

Yao, Masaru; Senoh, Hiroshi; Sakai, Tetsuo; Kiyobayashi, Tetsu

doi:10.1016/j.jpowsour.2011.11.035

Cited by 107 publications

(91 citation statements)

References 23 publications

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“…37 The capacity contribution of PVK to the overall capacity of the composite electrode is negligible. 37 The capacity contribution of PVK to the overall capacity of the composite electrode is negligible.…”

Section: Resultsmentioning

confidence: 99%

Sulfur quantum dots wrapped by conductive polymer shell with internal void spaces for high-performance lithium–sulfur batteries

Huang

Cheng

et al. 2015

J. Mater. Chem. A

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Table of Content By a facile two-step dissolution-precipitation treatment, novel core-shell S quantum dots/PVK nanocomposites are synthesized.Fig. 5. (a) Nyquist plots of the electrode for the different SQD/PVK nanocomposites, pure PVK and pure sulfur cathode after five cycles from 200 kHz to 100 mHz at room temperature. (b) Rate capabilities of the sulfur electrode and SQD/PVK nanocomposites. Cycling performance of sulfur and SQD/PVK nanocomposites electrode at a rate of 0.2 C (c) and 0.5 C (d).Fig. 6. (a) Typical CV curves of the SQD/PVK-B electrode. (b) Galvanostatic charge/discharge profiles of the SQD/PVK-B electrode at 0.75 C (c) EIS of the SQD/PVK-B electrode at different cycles. (d) Cycling performance of the SQD/PVK-B electrode at a rate of 0.75C. SEM image of the SQD/PVK-B electrode:(e) the fresh electrode, (f) the electrode after 500 cycles at 0.75 C.

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Section: Resultsmentioning

confidence: 99%

Sulfur quantum dots wrapped by conductive polymer shell with internal void spaces for high-performance lithium–sulfur batteries

Huang

Cheng

et al. 2015

J. Mater. Chem. A

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“…Non-conjugated pendant polymer 154 ( Figure 22 ) with carbazole as the redox center was the fi rst demonstration of this concept. [ 198 ] After 50 charge − discharge cycles at 0.2C, 94% of the capacity is preserved, refl ecting the stability of both the carbazole site and the polyethylene backbone. The non-conjugated nature of the polymer ensures that the positive charge generated at one carbazole site upon p-doping would not prevent the oxidation of another nearby site.…”

Section: Non-conjugated Redox Polymersmentioning

confidence: 99%

Organic Electrode Materials for Rechargeable Lithium Batteries

Liang

Tao

Chen

2012

Advanced Energy Materials

1,193

1,016

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Organic compounds offer new possibilities for high energy/power density, cost-effective, environmentally friendly, and functional rechargeable lithium batteries. For a long time, they have not constituted an important class of electrode materials, partly because of the large success and rapid development of inorganic intercalation compounds. In recent years, however, exciting progress has been made, bringing organic electrodes to the attention of the energy storage community. Herein thirty years' research efforts in the fi eld of organic compounds for rechargeable lithium batteries are summarized. The working principles, development history, and design strategies of these materials, including organosulfur compounds, organic free radical compounds, organic carbonyl compounds, conducting polymers, non-conjugated redox polymers, and layered organic compounds are presented. The cell performances of these materials are compared, providing a comprehensive overview of the area, and straightforwardly revealing the advantages/disadvantages of each class of materials.

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“…[87] For example, the practical capacity of Li 2 C 6 O 6 can reach 500 mAh g -1 , which is 85% of its theoretical capacity (589 mAh g -1 ). [88] It is capable of repeatedly accommodating nearly four lithium atoms, giving a capacity of more than 300 mAh g -1 . [88] It is capable of repeatedly accommodating nearly four lithium atoms, giving a capacity of more than 300 mAh g -1 .…”

Section: Capacity-orientedmentioning

confidence: 99%

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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Redox active poly(N-vinylcarbazole) for use in rechargeable lithium batteries

Cited by 107 publications

References 23 publications

Sulfur quantum dots wrapped by conductive polymer shell with internal void spaces for high-performance lithium–sulfur batteries

Sulfur quantum dots wrapped by conductive polymer shell with internal void spaces for high-performance lithium–sulfur batteries

Organic Electrode Materials for Rechargeable Lithium Batteries

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

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