Conjugated microporous polymer based on star-shaped triphenylamine-benzene structure with improved electrochemical performances as the organic cathode material of Li-ion battery

Chen, Zhangxin; Li, Weijun; Dai, Yuyu; Xu, Ning; Su, Chang; Liu, Junlei; Zhang, Cheng

doi:10.1016/j.electacta.2018.08.047

Cited by 44 publications

(24 citation statements)

References 20 publications

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“…This less porous structure is consistent with the results of porosity measurements of PTEPA. Polytriphenylamine displays negligible microporosity with a very small surface area, which, it was proposed, may be because of the difficulty to build a porous honeycomb structure from a monomer with short connecting groups . From our hypothesis, we speculate that the structure of polytriphenylamine contains similar twisted pores and channels to that proposed for PTEPA.…”

Section: Resultssupporting

confidence: 80%

“…Cyclic voltammetry (CV) profiles of the electrode exhibit pairs of broad redox peaks located at 3.69 V versus Li/Li + (oxidation) and 3.37 V versus Li/Li + (reduction; Figure a). The separation of the redox waves in PTEPA is approximately 0.32 V, which is slightly narrower than that reported previously for the polytriphenylamine (PTPA) electrode (0.34 V) . The symmetric peak shape of the oxidation and reduction peaks of PTEPA demonstrates its capacitance characteristics.…”

Section: Resultsmentioning

confidence: 99%

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An Efficient Electrochromic Supercapacitor Based on Solution‐Processable Nanoporous Poly{tris[4‐(3,4‐ethylenedioxythiophene)phenyl]amine}

Yang

et al. 2020

ChemSusChem

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A new green synthetic route to tris[4‐(3,4‐ethylenedioxythiophene)phenyl]amine (TEPA) monomer has been developed and the molecular structure of TEPA has been determined by using single‐crystal XRD. Solution‐processable nanoporous poly{tris[4‐(3,4‐ethylenedioxythiophene)phenyl]amine} (PTEPA) is prepared by a chemical oxidative polymerization in a microemulsion. Based on the distorted structure of TEPA in the solid state, it is proposed that dendritic PTEPA has a distorted 3 D conformation with multiple twisted channels and pores that are narrowed and blocked by bifurcation and distortion of PTEPA, which is consistent with the observed hierarchical pore structure. As a cathode material, PTEPA exhibits a discharge capacity of 89.5 mAh g−1 in the initial cycle with a highly sloping two‐stage discharge curve and relatively stable cycling performance. Beyond its excellent energy storage properties, PTEPA also shows relatively good electrochromic performance. Furthermore, an efficient all‐solid‐state electrochromic supercapacitor (ECSC) with good electrochromic performance and high energy storage capacity (13.3 mF cm−2) is assembled from PTEPA and nanoporous graphene films. During charge–discharge processes, the color of the ECSC changes between yellow‐green and steel blue. Thus, the energy storage level of the ECSC can be monitored by the corresponding color changes. The fabricated ECSC may have practical applications, for example, in self‐powered electrochromic smart windows.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

An Efficient Electrochromic Supercapacitor Based on Solution‐Processable Nanoporous Poly{tris[4‐(3,4‐ethylenedioxythiophene)phenyl]amine}

Yang

et al. 2020

ChemSusChem

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“…The resulting hybridl ithium-ion cell showed ap erformance that resembled mostly that of ap olytriphenylamine-based analog, except for a slightly improvedr ate capability. [132] Ac ell based on ap olytriphenylamine and ag raphitee lectrode and ap otassium hexafluorophosphate-based electrolyte was demonstrated, displaying as table voltage but al ow capacity of 60 mAh g À1 and a coulombic efficiency of only 80 %. [133] Dong and co-workers prepared ap olytriphenylamine on MWCNTsvia in situ polymerizationo ft riphenylamine in adispersion of MWCNTs.…”

Section: Polytriphenylaminementioning

confidence: 99%

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

2019

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In times of spreading mobile devices, organic batteries represent a promising approach to replace the well‐established lithium‐ion technology to fulfill the growing demand for small, flexible, safe, as well as sustainable energy storage solutions. In the last years, large efforts have been made regarding the investigation and development of batteries that use organic active materials since they feature superior properties compared to metal‐based, in particular lithium‐based, energy‐storage systems in terms of flexibility and safety as well as with regard to resource availability and disposal. This Review compiles an overview over the most recent studies on the topic. It focuses on the different types of applied active materials, covering both known systems that are optimized and novel structures that aim at being established.

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“…It is expected that the loose morphology of PBDAPA with the increased specific surface area and the total pore volume will facilitate the intercalation of electrolyte ions in composite electrode and thereby benefit to the improvement of the electrochemical performances as electrode materials. [33][34][35]…”

Section: Materials Characterizationmentioning

confidence: 99%

A Novel Anthraquinone‐Containing Poly(Triphenylamine) Derivative: Preparation and Electrochemical Performance as Cathode for Lithium‐Ion Batteries

Han

et al. 2020

ChemElectroChem

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Organic and polymeric materials are excellent candidates for next generation advanced electrode materials. Therein, 2,6-Bis (4-(diphenylamino)phenyl)-9,10-anthracenedione (BDAPA) functional monomer was synthesized through Suzuki coupling reaction, and a novel anthraquinone-containing poly(triphemylamine) polymer (PBDAPA) was then prepared by the simple oxidative polymerization. The obtained novel functional polymer presented a unique urchin-like morphology with outgrowth of hollow tubular spiny, which possesses the improved specific surface area of~129.6 m 2 g À 1 and the small average mesopore diameter of 1.78 nm. As cathode material, the obtained PBDAPA compared to polytriphenylamine (PTPA), demonstrated two obvious discharge plateaus, corresponding to the double charge-discharge characteristics from p-type triphenylamine and n-type anthraquinone segments in the polymer, respectively. Also, PBDAPA exhibited an improved specific capacity of 132.7 mAh g À 1 and an enhanced rate capability with the discharge specific capacities of 140.6, 124.3, 107.5 and 97.1 mAh g À 1 at the discharge rates of 20, 50, 100 and 200 mA g À 1 , respectively. The introduction of anthraquinone unit in polytriphenylamine as well as the resulted open pore morphology for PBDAPA was responsible to the improved electrochemical performances, which makes it a potential strategy for the design and preparation of high performance organic lithium-ion batteries.

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Conjugated microporous polymer based on star-shaped triphenylamine-benzene structure with improved electrochemical performances as the organic cathode material of Li-ion battery

Cited by 44 publications

References 20 publications

An Efficient Electrochromic Supercapacitor Based on Solution‐Processable Nanoporous Poly{tris[4‐(3,4‐ethylenedioxythiophene)phenyl]amine}

An Efficient Electrochromic Supercapacitor Based on Solution‐Processable Nanoporous Poly{tris[4‐(3,4‐ethylenedioxythiophene)phenyl]amine}

Sustainable Energy Storage: Recent Trends and Developments toward Fully Organic Batteries

A Novel Anthraquinone‐Containing Poly(Triphenylamine) Derivative: Preparation and Electrochemical Performance as Cathode for Lithium‐Ion Batteries

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