Synthesis of porous-CoN nanoparticles and their application as a high capacity anode for lithium-ion batteries

Das, B. K.; Reddy, M. V.; Rao, G. V. Subba; Chowdari, B. V. R.

doi:10.1039/c2jm31969a

Cited by 74 publications

(68 citation statements)

References 33 publications

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“…Metal nitrides show superior metallic characteristics owing to their distinct electronic structure and properties, such as low electrical resistance and corrosion resistance. [5d,11] The introduction of N atoms has been confirmed to strongly affect the electronic structure of the metal nanocomposites through charge‐transfer or concomitant structural modification . Metal oxide formed on the surface of metal nitrides during initial electrochemical processes could act as active components to readily absorb OH − to facilitate HER and OER while the metal nitride core, compared to metal oxides, can expedite electron transport from the conductive support to the catalyst surface .…”

Section: Methodsmentioning

confidence: 99%

Promotion of Overall Water Splitting Activity Over a Wide pH Range by Interfacial Electrical Effects of Metallic NiCo‐nitrides Nanoparticle/NiCo₂O₄ Nanoflake/graphite Fibers

et al. 2019

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Many efforts have been made to develop bifunctional electrocatalysts to facilitate overall water splitting. Here, a fibrous bifunctional 3D electrocatalyst is reported for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) with high performance. The remarkable electrochemical performance is attributed of the catalysts to a number of factors: the metallic character of the three components (i.e., Ni3N, CoN, and NiCo2O4); the electronic structure, nanoflake‐nanosphere network with abundant electroactive sites, and the electric field effect at the interfaces between different components. The oxide–nitride/graphite fibers have the lowest overpotential requirements of 71 and 183 mV at 10 mA cm−2 for HER and OER in alkaline medium, respectively. These values are comparable to those of commercial Pt/C (20 wt%) and RuO2. The electrodes also show a response to HER and OER in both neutral and acid media. Furthermore, the 3D structure can be highlighted by all‐round electrodes for overall water splitting. The calculations on the changes in electrons transfer and the Femi level from oxides to oxides/nitrides reveal that the observed superb electrocatalytic performance can be attributed to the presence of Ni3N and CoN derived from the in situ nitridation of NiCo2O4.

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Section: Methodsmentioning

confidence: 99%

Promotion of Overall Water Splitting Activity Over a Wide pH Range by Interfacial Electrical Effects of Metallic NiCo‐nitrides Nanoparticle/NiCo₂O₄ Nanoflake/graphite Fibers

et al. 2019

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“…[78,79] However, cobalt species are somewhat toxic and expensive. [78,79] However, cobalt species are somewhat toxic and expensive.…”

Section: Cobaltitesmentioning

confidence: 99%

“…Co 3 O 4 has been widely studied as an interesting anode material for LIBs owing to its high reversible capacity and easy preparation in comparison to other cobalt oxides/nitride, such as CoO, Co 2 O 3 , and CoN. [78,79] However, cobalt species are somewhat toxic and expensive. Therefore, the worthwhile efforts have been made towards partially replacing the Co in Co 3 O 4 by much cheaper and more eco-friendly alternative elements without sacrificing the good electrochemical performance.…”

Section: Cobaltitesmentioning

confidence: 99%

Mixed Transition‐Metal Oxides: Design, Synthesis, and Energy‐Related Applications

Yuan¹,

Wu²,

Xie³

et al. 2014

Angew Chem Int Ed

2,091

1,024

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A promising family of mixed transition-metal oxides (MTMOs) (designated as Ax B3-x O4 ; A, B=Co, Ni, Zn, Mn, Fe, etc.) with stoichiometric or even non-stoichiometric compositions, typically in a spinel structure, has recently attracted increasing research interest worldwide. Benefiting from their remarkable electrochemical properties, these MTMOs will play significant roles for low-cost and environmentally friendly energy storage/conversion technologies. In this Review, we summarize recent research advances in the rational design and efficient synthesis of MTMOs with controlled shapes, sizes, compositions, and micro-/nanostructures, along with their applications as electrode materials for lithium-ion batteries and electrochemical capacitors, and efficient electrocatalysts for the oxygen reduction reaction in metal-air batteries and fuel cells. Some future trends and prospects to further develop advanced MTMOs for next-generation electrochemical energy storage/conversion systems are also presented.

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“…In addition, transition metal nitrides are also used as an anode materials for lithium-ion batteries. In particularly, cobalt nitrides find place in Li 3−x Co x N, which shows a remarkable high reversible capacity and good cycle performance [7,8,9,10]. A lot of theoretical [11,12,13,14,15] and experimental [16,17,18,19,20,21,22,23] reports are available on iron nitride (Fe-N) system.…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic properties of Co-N thin films deposited using magnetron sputtering at 523 K

Pandey

Gupta

et al. 2017

Journal of Alloys and Compounds

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In this work, we studied cobalt nitride (Co-N) thin films deposited using a dc magnetron sputtering method at a substrate temperature (T s ) of 523 K. We find that independent of the reactive gas flow (R N 2 ) used during sputtering, the phases of Co-N formed at this temperature seems to be identical having N at.% ∼5. This is contrary to Co-N phases formed at lower T s . For T s ∼300 K, an evolution of Co-N phases starting from Co(N)→Co 4 N→Co 3 N→CoN can be seen as R N 2 increases to 100%, whereas when the substrate temperature increases to 523 K, the phase formed is a mixture of Co and Co 4 N, independent of the R N 2 used during sputtering. We used x-ray diffraction (XRD) to probe long range ordering, x-ray absorption spectroscopy (XAS) at Co absorption edge for the local structure, Magneto-optical Kerr e ffect (MOKE) and polarized neutron reflectivity (PNR) to measure the magnetization of samples. Quantification of N at.% was done using secondary ion mass spectroscopy (SIMS). Measurements suggest that the magnetic moment of Co-N samples deposited at 523 K is slightly higher than the bulk Co moment and does not get affected with the R N 2 used for reactive sputtering. Our results provide an important insight about the phase formation of Co-N thin films which is discussed in this work.

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Synthesis of porous-CoN nanoparticles and their application as a high capacity anode for lithium-ion batteries

Cited by 74 publications

References 33 publications

Promotion of Overall Water Splitting Activity Over a Wide pH Range by Interfacial Electrical Effects of Metallic NiCo‐nitrides Nanoparticle/NiCo₂O₄ Nanoflake/graphite Fibers

Promotion of Overall Water Splitting Activity Over a Wide pH Range by Interfacial Electrical Effects of Metallic NiCo‐nitrides Nanoparticle/NiCo₂O₄ Nanoflake/graphite Fibers

Mixed Transition‐Metal Oxides: Design, Synthesis, and Energy‐Related Applications

Structural and magnetic properties of Co-N thin films deposited using magnetron sputtering at 523 K

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Synthesis of porous-CoN nanoparticles and their application as a high capacity anode for lithium-ion batteries

Cited by 74 publications

References 33 publications

Promotion of Overall Water Splitting Activity Over a Wide pH Range by Interfacial Electrical Effects of Metallic NiCo‐nitrides Nanoparticle/NiCo2O4 Nanoflake/graphite Fibers

Promotion of Overall Water Splitting Activity Over a Wide pH Range by Interfacial Electrical Effects of Metallic NiCo‐nitrides Nanoparticle/NiCo2O4 Nanoflake/graphite Fibers

Mixed Transition‐Metal Oxides: Design, Synthesis, and Energy‐Related Applications

Structural and magnetic properties of Co-N thin films deposited using magnetron sputtering at 523 K

Contact Info

Product

Resources

About

Promotion of Overall Water Splitting Activity Over a Wide pH Range by Interfacial Electrical Effects of Metallic NiCo‐nitrides Nanoparticle/NiCo₂O₄ Nanoflake/graphite Fibers

Promotion of Overall Water Splitting Activity Over a Wide pH Range by Interfacial Electrical Effects of Metallic NiCo‐nitrides Nanoparticle/NiCo₂O₄ Nanoflake/graphite Fibers