A review on metal nitrides/oxynitrides as an emerging supercapacitor electrode beyond oxide

Ghosh, Subrata; Jeong, Sang Mun; Polaki, S. R.

doi:10.1007/s11814-018-0089-6

Cited by 116 publications

(36 citation statements)

References 143 publications

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“…To test the feasibility of the prepared nanostructured electrode for supercapacitor applications, three‐electrode electrochemical measurements were performed by measuring the cyclic voltammetry (CV), Galvanostatic charge–discharge (GCD), and impedance in a freshly prepared 2 m KOH electrolyte . The representative CV curves of the prepared electrodes are presented in Figure a at the same scan rate, 100 mV s −1 .…”

Section: Resultsmentioning

confidence: 99%

Self‐Assembled Nickel Pyrophosphate‐Decorated Amorphous Bimetal Hydroxides 2D‐on‐2D Nanostructure for High‐Energy Solid‐State Asymmetric Supercapacitor

Chodankar

Dubal

et al. 2019

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To obtain a supercapacitor with a remarkable specific capacitance and rate performance, a cogent design and synthesis of the electrode material containing abundant active sites is necessary. In present work, a scalable strategy is developed for preparing 2D‐on‐2D nanostructures for high‐energy solid‐state asymmetric supercapacitors (ASCs). The self‐assembled vertically aligned microsheet‐structured 2D nickel pyrophosphate (Ni2P2O7) is decorated with amorphous bimetallic nickel cobalt hydroxide (NiCo‐OH) to form a 2D‐on‐2D nanostructure arrays electrode. The resulting Ni2P2O7/NiCo‐OH 2D‐on‐2D array electrode exhibits peak specific capacity of 281 mA hg−1 (4.3 F cm−2), excellent rate capacity, and cycling stability over 10 000 charge–discharge cycles in the positive potential range. The excellent electrochemical features can be attributed to the high electrical conductivity and 2D layered structure of Ni2P2O7 along with the Faradic capacitance of the amorphous NiCo‐OH nanosheets. The constructed Ni2P2O7/NiCo‐OH//activated carbon based solid‐state ASC cell operates in a high voltage window of 1.8 V with an energy density of 78 Wh kg−1 (1.065 mWh cm−3) and extraordinary cyclic stability over 10 000 charge–discharge cycles with excellent energy efficiency (75%–80%) over all current densities. The excellent electrochemical performance of the prepared electrode and solid‐state ASC device offers a favorable and scalable pathway for developing advanced electrodes.

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Section: Resultsmentioning

confidence: 99%

Self‐Assembled Nickel Pyrophosphate‐Decorated Amorphous Bimetal Hydroxides 2D‐on‐2D Nanostructure for High‐Energy Solid‐State Asymmetric Supercapacitor

Chodankar

Dubal

et al. 2019

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“…[3,4] The supercapacitors are usually divided into double-layer supercapacitors and pseudocapacitors based on different charge storage mechanism. [7] Therefore, too much effort has been devoted to developing efficient electrode materials such as metal oxides/nitrides/ sulfides, [8,9] polyoxometalates, [10] and conductive polymers. [7] Therefore, too much effort has been devoted to developing efficient electrode materials such as metal oxides/nitrides/ sulfides, [8,9] polyoxometalates, [10] and conductive polymers.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Performance of Manganese Coordinated Polyaniline

Chen

Xie

2019

Adv Elect Materials

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Manganese (II) coordinated polyaniline (PANI‐Mn) is designed as an energy‐storage electrode to improve electrochemical cycling stability of conductive polymer‐based supercapacitors. A PANI‐Mn electrode is synthesized through electro‐polymerization and hydrothermal coordination processes. A tetrahedron coordination structure is formed between manganese (II) dichloride and neighboring imino nitrogen to enforce the bonding strength of conjoint aniline units, restraining excessive volume expansion of the PANI molecule chain. Specific capacitance is enhanced from 350 F g−1 of PANI to 810 F g−1 of PANI‐Mn at 1 A g−1. Cycling capacitance retention is improved from 61% of PANI to 88% of PANI‐Mn at 5 A g−1 for 1000 cycles. PANI‐Mn shows larger response current than PANI at the same potential. First principle calculations prove that PANIs‐Mn exhibits higher density of state at Fermi level than PANI. The conjugated electron delocalization is strengthened in transitional metal‐coordinated conductive polymer, causing the improved conductivity of PANI‐Mn. Furthermore, an all‐solid‐state symmetric supercapacitor based on a PANI‐Mn electrode exhibits an energy density of 51.38 Wh kg−1 at a power density of 850 W kg−1 and a considerable cycling life of 82% after 1000 cycles at 5 A g−1. PANI‐Mn coordination polymer exhibits enhanced electrochemical stability, thus showing promise for energy storage application.

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“…Among the greatest recent achievements, vanadium oxynitride materials has been considered to be an excellent candidate due to their superior outstanding electrochemical properties due to multiple oxidation states (V 5+ , V 4+ , V 3+ , V 2+ ) leading to an excellent specific capacity, and the presence of some vanadium oxides. VO x N y still suffers from poor rate performance, low specific surface area and aging effects [14,19]. However, most reports on vanadium oxynitride materials entail the use of vanadium oxide precursors such as VO 2 or V 2 O 5 resulting in the generation of aggregated VO x N y particles owing to the low melting point of the vanadium oxides [20].…”

Section: Introductionmentioning

confidence: 99%

Nitridation Temperature Effect on Carbon Vanadium Oxynitrides for a Symmetric Supercapacitor

et al. 2019

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In this work, porous carbon-vanadium oxynitride (C-V 2 NO) nanostructures were obtained at different nitridation temperature of 700, 800 and 900 • C using a thermal decomposition process. The X-ray diffraction (XRD) pattern of all the nanomaterials showed a C-V 2 NO single-phase cubic structure. The C-V 2 NO obtained at 700 • C had a low surface area (91.6 m 2 g −1 ), a moderate degree of graphitization, and a broader pore size distribution. The C-V 2 NO obtained at 800 • C displayed an interconnected network with higher surface area (121.6 m 2 g −1 ) and a narrower pore size distribution. In contrast, at 900 • C, the C-V 2 NO displayed a disintegrated network and a decrease in the surface area (113 m 2 g −1 ). All the synthesized C-V 2 NO yielded mesoporous oxynitride nanostructures which were evaluated in three-electrode configuration using 6 M KOH aqueous electrolyte as a function of temperature. The C-V 2 NO@800 • C electrode gave the highest electrochemical performance as compared to its counterparts due to its superior properties. These results indicate that the nitridation temperature not only influences the morphology, structure and surface area of the C-V 2 NO but also their electrochemical performance. Additionally, a symmetric device fabricated from the C-V 2 NO@800 • C displayed specific energy and power of 38 W h kg −1 and 764 W kg −1 , respectively, at 1 A g −1 in a wide operating voltage of 1.8 V. In terms of stability, it achieved 84.7% as capacity retention up to 10,000 cycles which was confirmed through the floating/aging measurement for up to 100 h at 10 A g −1 . This symmetric capacitor is promising for practical applications due to the rapid and easy preparation of the carbon-vanadium oxynitride materials.

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A review on metal nitrides/oxynitrides as an emerging supercapacitor electrode beyond oxide

Cited by 116 publications

References 143 publications

Self‐Assembled Nickel Pyrophosphate‐Decorated Amorphous Bimetal Hydroxides 2D‐on‐2D Nanostructure for High‐Energy Solid‐State Asymmetric Supercapacitor

Self‐Assembled Nickel Pyrophosphate‐Decorated Amorphous Bimetal Hydroxides 2D‐on‐2D Nanostructure for High‐Energy Solid‐State Asymmetric Supercapacitor

Electrochemical Performance of Manganese Coordinated Polyaniline

Nitridation Temperature Effect on Carbon Vanadium Oxynitrides for a Symmetric Supercapacitor

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