Recent advances in 2-D nanostructured metal nitrides, carbides, and phosphides electrodes for electrochemical supercapacitors – A brief review

Theerthagiri, Jayaraman; Govindarajan, Durai; Karuppasamy, K.; Arunachalam, Prabhakarn; Venugopal, Elakkiya; Kuppusami, P.; Maiyalagan, T.; Kim, Hyun‐Seok

doi:10.1016/j.jiec.2018.06.038

Cited by 125 publications

(46 citation statements)

References 152 publications

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“…The SCs performance was tested in 2 m KOH aqueous solution using a typical three-electrode setup at room temperature. The CoP/NiCoP NTs show the longest discharge time as demonstrated by the galvanostatic charge/discharge (GCD) curves at 1 A g −1 in Figure 8c 9,1901213 The GCD curves for CoP/NiCoP NTs at various current densities were shown in Figure 8d. The redox peaks in the potential range of 0.3 to 0.5 V versus Hg/HgO are attributed to the oxidation process of Co δ+ / Ni δ+ species.…”

Section: Resultsmentioning

confidence: 97%

“…These analyses agree well with the XPS results, suggesting that the formation of the heterojunction led to electron redistribution, regulating the electronic structures, which is critical to the HER activity. 2019, 9,1901213 quantitative EXAFS fitting are shown in Figure S5 and Table S1 in the Supporting Information, demonstrating that both the bond lengths and coordination environments of Ni and Co in CoP/NiCoP NTs are altered. Energy Mater.…”

Section: Resultsmentioning

confidence: 99%

“…Besides, the unique heterojunction for CoP/NiCoP NTs may result in a lowered kinetic barrier for water dissociation by virtue of a synergistic effect. 2019, 9,1901213 As a result, the HER activity of CoP/NiCoP in 0.1 m KOH and 0.025 m phosphate buffer saline (PBS) (pH = 6.86) elevates with the increase of the concentration of K + (Figure 5b and Figure S8, Supporting Information). We carried out the HER measurements in 0.1 m KOH, 0.25 and 0.05 m H 2 SO 4 .…”

Section: Resultsmentioning

confidence: 99%

“…2019,9, 1901213 foil, CoO, Co 3 O 4 , CoP, and NiCoP as reference, the peaks of Ni R-space at 1.75 and 2.25 Å (Figure 3c), Co R-space at 1.65 and 2.2 Å (Figure 3d) could be observed in CoP/NiCoP NTs, corresponding to NiP, NiCo, CoP, and CoNi shells.…”

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confidence: 95%

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Construction of CoP/NiCoP Nanotadpoles Heterojunction Interface for Wide pH Hydrogen Evolution Electrocatalysis and Supercapacitor

Lin

Sun

Liu

et al. 2019

Advanced Energy Materials

328

142

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Constructing well defined nanostructures is promising but still challenging for high‐efficiency catalysts for hydrogen evolution reaction (HER) and energy storage. Herein, utilizing the differences in surface energies between (111) facets of CoP and NiCoP, a novel CoP/NiCoP heterojunction is designed and synthesized with a nanotadpoles (NTs)‐like morphology via a solid‐state phase transformation strategy. By effective interface construction, the disorder in terms of electronic structure and coordination environment at the interface in CoP/NiCoP NTs is created, which leads to dramatically elevated HER performance within a wide pH range. Theoretical calculations prove that an optimized proton chemisorption and H2O dissociation are achieved by an optimized phosphide polymorph at the interface, accelerating the HER reaction. The CoP/NiCoP NTs are also proved to be excellent candidates for use in supercapacitors (SCs) with a high specific capacitance (1106.2 F g−1 at 1 A g−1) and good cycling stability (nearly 100% initial capacity retention after 1000 cycles). An asymmetric supercapacitor shows a high energy density (145 F g−1 at 1 A g−1) and good cycling stability (capacitance retention is 95% after 3200 cycles). This work provides new insights into the catalyst design for electrocatalytic and energy storage applications.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 95%

See 2 more Smart Citations

Construction of CoP/NiCoP Nanotadpoles Heterojunction Interface for Wide pH Hydrogen Evolution Electrocatalysis and Supercapacitor

Lin

Sun

Liu

et al. 2019

Advanced Energy Materials

328

142

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“…Metal phosphide nanoparticles anchored in ap orous carbonaceousm atrix are considered as active catalysts in many different fields, such as hydrogenation, [21] electrochemical supercapacitors, [22] andw ater splitting. [23] Hence,C o 2 P/NC-900 is demonstrated here as an electrocatalyst for universal-pH HER in at ypicalt hree-electrodes etup.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Metal Phosphide Nanoparticles Supported on Porous N‐Doped Carbon Derived from Spirulina for Universal‐pH Hydrogen Evolution

et al. 2019

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Transition metal phosphides (TMPs) are regarded as highly active electrocatalysts for the hydrogen evolution reaction (HER). However, traditional synthetic routes usually use expensive and dangerous precursors as P donors. The development of a low‐cost and ecofriendly method for the synthesis of TMPs is significant for sustainable energy development. Herein, cobalt phosphides anchored on or embedded in a spirulina‐derived porous N‐doped carbon matrix (Co2P/NC) was fabricated by two‐step hydrothermal treatment and carbonization method, which utilized the intrinsic C, N, and P of biomass cleverly as the sources of C, N, and P, respectively. As a result of the high surface area and porosity that enhance the mass‐transfer dynamics, Co2P/NC shows good electrocatalytic activity at all pH values in the HER. This work not only provides a facile and effective method for the fabrication of TMP nanoparticles loaded onto carbon materials but also opens a new strategy for the utilization of the intrinsic ingredients of biomass for the preparation of other functional electrocatalysts.

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Fundamental Understanding of Sodium‐Ion Capacitors Mechanism

Cai,

Deng,

Hou

et al. 2023

Sodium Ion Capacitors

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Recent advances in 2-D nanostructured metal nitrides, carbides, and phosphides electrodes for electrochemical supercapacitors – A brief review

Cited by 125 publications

References 152 publications

Construction of CoP/NiCoP Nanotadpoles Heterojunction Interface for Wide pH Hydrogen Evolution Electrocatalysis and Supercapacitor

Construction of CoP/NiCoP Nanotadpoles Heterojunction Interface for Wide pH Hydrogen Evolution Electrocatalysis and Supercapacitor

Synthesis of Metal Phosphide Nanoparticles Supported on Porous N‐Doped Carbon Derived from Spirulina for Universal‐pH Hydrogen Evolution

Fundamental Understanding of Sodium‐Ion Capacitors Mechanism

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