Synthesis of graphene/polyaniline nanocomposite for supercapacitor electrodes

Maddu, Akhiruddin; Nugroho, Rudy Agung; Rustami, Erus; Arjo, Sugianto; Hidayat, Mirza Nur

doi:10.1088/1742-6596/1171/1/012043

Cited by 8 publications

(8 citation statements)

References 15 publications

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“…The gravimetric capacitance of the GO-Azo electrode is only 81.25 F g –1 at a current density of 0.25 A g –1 . The high specific capacitance delivered by the PANI/GO-Azo nanocomposite is due to the synergistic effect of the three components: Azo, GO, and PANI within the nanocomposite as the large surface area bearing GO nanosheets envisages the polymerization of PANI over it, which in turn excels the pseudocapacitive charge storage. , A decreasing trend in specific capacitance with increasing current density is observed, which is due to the fast reaction kinetics of the electrode at high current densities. To find the contribution of azopyridine in the synthesized nanocomposite, we have studied the electrochemical performance of the PANI/GO nanocomposite.…”

Section: Resultsmentioning

confidence: 99%

Azopyridine as a Linker Molecule in Polyaniline-Grafted Graphene Oxide Nanocomposite Electrodes for Asymmetric Supercapacitors

Baby,

Sunny,

Vigneshwaran

et al. 2023

ACS Appl. Energy Mater.

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Electronically conducting polymers (ECPs)/carbon nanomaterialbased polyaniline electrodes have received great interest in the field of supercapacitors due to their high specific capacitance, good electronic conductivity, good mechanical strength, good chemical and electrochemical stabilities, etc. Among the various available ECPs, they have received much importance due to their excellent electrochemical performances. Herein, we report a facile synthesis of a PANI-grafted graphene oxide (GO)-azopyridine (Azo) (PANI/GO-Azo) nanocomposite and use it as electrodes for fabricating supercapacitors. The azo units present in the nanocomposite act as a spacer between PANI and GO. The interfacial polymerization method is adopted for the synthesis of PANI/GO-Azo nanocomposites. The PANI/ GO-Azo nanocomposite electrode exhibits a gravimetric capacitance of 426 F g −1 at a current density of 0.25 A g −1 in 1 M H 2 SO 4 (aqueous) electrolyte. The electrode possesses good cycling stability of more than 5000 cycles with a Coulombic efficiency of 98.5%. An asymmetric supercapacitor fabricated with PANI/GO-Azo as the positive electrode and activated carbon as the negative electrode delivers an energy density of 12.45 W h kg −1 with a power density of 274.9 W kg −1 . This study proclaims that the PANI/GO-Azo nanocomposite electrode is highly promising for next-generation supercapacitors.

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Section: Resultsmentioning

confidence: 99%

Azopyridine as a Linker Molecule in Polyaniline-Grafted Graphene Oxide Nanocomposite Electrodes for Asymmetric Supercapacitors

Baby,

Sunny,

Vigneshwaran

et al. 2023

ACS Appl. Energy Mater.

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“…The absorption bands at 2920, 1566, and 1481 cm -1 are assigned to the stretching vibration of C-H, C=N, and C=C ring stretching vibration of the benzenoid structure. The C=N stretching group indicates the presence of a bond between graphene and polyaniline [27]. The bands at 1301, 1244, and 1114 cm -1 are attributed to the stretching vibrations of C-N in the aromatic ring, C-N in primary aromatic amine, and C-N in the benzenoid ring, respectively [28,29].…”

Section: Resultsmentioning

confidence: 99%

Composite of graphene and in-situ polymerized polyaniline on carbon cloth substrate for flexible supercapacitor

Sembiring

Sumboja

2022

J. Phys.: Conf. Ser.

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Flexible and lightweight energy storage is required for powering wearable electronic devices. Among the developed energy storage devices, supercapacitors have gained much interest as energy storage for wearable applications through their long cycle life and high power density. This work presents a flexible supercapacitor based on carbon cloth coated with graphene/polyaniline nanocomposite. Graphene/polyaniline nanocomposite is adopted as active material due to its high stability and the synergistic feature of pseudocapacitive and electrical double layer capacitance. The nanocomposite is synthesized from aniline and graphene in the sulfuric acid solution containing carbon cloth by chemical oxidative method, allowing the aniline to polymerize directly on the carbon cloth and graphene. Flexible supercapacitor devices with PVA/H2SO4 gel electrolyte exhibit an areal capacitance of 194.90 mF/cm2 at a scan rate of 5 mV/s. The device retains 77.21% of its initial capacitance after 500 cycles of cyclic voltammetry tests and exhibits a good performance during bending at 90° and 180°. This work demonstrates the potentials of carbon cloth-based supercapacitors for high-performance wearable supercapacitors.

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“…Zhu et al, 2016), sebagai media pada sistem jaringan (Bai et al, 2019;Shang et al, 2019). Sedangkan dalam sistem pengembangan teknologi, grafen dapat diperankan seabagai piranti dalam dye sensitized solar cells (DSSC) (Adil et al, 2018;Mahmoudi et al, 2018), superkapasitor (Horn et al, 2019;Maddu et al, 2019;W. Yang et al, 2015) , biochip (Ramalingam et al, 2020;Roy et al, 2016) , anti peluru (Bizao et al, 2018;Costa et al, 2019), anti radar (Chen et al, 2017;Xie et al, 2019;D.…”

Section: Pendahuluanunclassified

“…Applications. https://doi.org/10.1016/b978-0-12-816771-7.00023-5 Murata, H., Nakajima, Y., Saitoh, N., Yoshizawa, N., Suemasu, T., & Toko, K. & Maddu, A. (2019).…”

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confidence: 99%

Sintesis Arang Batok Kelapa menjadi Material Maju Grafen Menggunakan Metode Reduksi Kimia

Arjo¹,

Ramza

Hidayat

2021

JFF

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ABSTRAK-Penelitian ini merupakan bentuk kajian sederhana yang memanfaatkan biomassa pertanian yaitu batok kelapa yang disintesis menjadi material maju grafen. Grafen merupakan salah satu material maju dan terbarukan dalam bidang sains dan teknologi terkini karena kemanfaatannya yang multifungsi. Penelitian ini diawali dengan mengubah biomassa batok kelapa menjadi karbon melalui suatu reaksi pembakaran. Arang hasil dari pembakaran selanjutnya diberikan perlakuan dengan metode reduksi kimia atau metode Hummer tereduksi. Hasil penelitian ini memperlihatkan bentuk morfologi grafen berupa serpihan-serpihan atau dikenal dengan istilah grafen Flakes. Hasil ini terkonfirmasi melalui uji visualisasi SEM, dimana grafen Flakes diperlihatkan dalam formasi tumpukan mengindikasikan struktur multilayer. Hasil uji TEM memperlihatkan jarak antar kisi kristal yang dimilikinya yaitu berkisar pada 2,40 dan 2,46 Å. Berdasarkan pada data jarak antar kisi kristal tersebut, hasil simulasi energi menggunakan prinsip DOS didapatkan bahwan grafen hasil sintesis memiliki energi secara berturut-turut adalah 4,0 eV untuk level konduksi dan 3,3 eV untuk level valensi. Hasil uji optik sifat absorbansi dan fluoresens memperlihatkan grafen memiliki dua puncak serapan utama yang berkorelasi dengan terjadinya transisi energi − * dan − * dari bentuk ikatan C=C dan C-O-C. Adapun pendaran yang dihasilkan melalui uji fluoresensi adalah warna hijau dengan panjang gelombang 525 nm. Secara sederhana rancangan penelitian dapat dikatakan telah berhasil dalam mensintesis grafen dari arang batok kelapa, meskipun belum sempurna dan masih perlu untuk dilakukan kajian kembali. Hasil dari penelitian ini selanjutnya akan dikembangkan lagi menjadi bentuk grafen dengan morfologi yang berpori.

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Synthesis of graphene/polyaniline nanocomposite for supercapacitor electrodes

Cited by 8 publications

References 15 publications

Azopyridine as a Linker Molecule in Polyaniline-Grafted Graphene Oxide Nanocomposite Electrodes for Asymmetric Supercapacitors

Azopyridine as a Linker Molecule in Polyaniline-Grafted Graphene Oxide Nanocomposite Electrodes for Asymmetric Supercapacitors

Composite of graphene and in-situ polymerized polyaniline on carbon cloth substrate for flexible supercapacitor

Sintesis Arang Batok Kelapa menjadi Material Maju Grafen Menggunakan Metode Reduksi Kimia

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