Surface engineering of CeO2–TiO2 composite electrode for enhanced electron transport characteristics and alkaline hydrogen evolution reaction

Sha, M. Ameen; Elias, Liju; Riyas, A.; Bhagya, T.C.; Meera, Muraleedharan Sheela; Shibli, S.M.A.

doi:10.1016/j.ijhydene.2020.03.048

Cited by 9 publications

(4 citation statements)

References 57 publications

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“…Sha et al reported fine-tuning the electro-catalytic properties of CeO 2 À TiO 2 composites by surface engineering to enhance the basic hydrogen evolution activity, including overpotential reduction and exchange current density increase. [142] An effective electroless coating procedure was applied to realize in NiÀ P coatings on mild steel substrate. They produce high conductivity by adjusting the surface roughness characteristics of the surface engineering composite electrode and the surface composition of the electroactive material.…”

Section: Ceo /Metal Oxide Composite Catalysts For Hermentioning

confidence: 99%

“…Sha et al. reported fine‐tuning the electro‐catalytic properties of CeO 2 −TiO 2 composites by surface engineering to enhance the basic hydrogen evolution activity, including overpotential reduction and exchange current density increase [142] . An effective electroless coating procedure was applied to realize in Ni−P coatings on mild steel substrate.…”

Section: Application Of Ceo2‐based Electrocatalysts In Hermentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances of CeO₂‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

2021

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wards the oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and nitrogen reduction reaction (NRR) are summarized. This Review also highlights the key role of CeO 2 and the structural design strategies in the hybrid electrocatalysts, including ion doping, interface and defect engineering, electronic structure optimization, and morphology control for catalytic output enhancement. Lastly, some scientific challenges and perspectives have been proposed, aiming to promote the development of other CeO 2-based hybrids for energy related electrocatalysis.

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Section: Ceo /Metal Oxide Composite Catalysts For Hermentioning

confidence: 99%

Section: Application Of Ceo2‐based Electrocatalysts In Hermentioning

confidence: 99%

Recent Advances of CeO₂‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

2021

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“…As shown in Figure S3 of Supporting Information, CNO@CO composites show smaller charge-transfer resistance and solution resistance than those of pristine CoNiO 2 , indicating that CeO 2 modification improve the electrochemical reaction activity at the interface and electron/ion conductivity. The decreased charge-transfer resistances of CNO@CO composites may be due to the direct and fast mutation between Ce 3+ and Ce 4+ and improved electron transfer ability of the composite through an electron transfer mechanism, [49,50] resulting in increased electronic conductivity.…”

Section: Resultsmentioning

confidence: 99%

Approaching High‐Performance Lithium Storage Materials by Constructing Hierarchical CoNiO₂@CeO₂ Nanosheets

Shi

Han

et al. 2020

Energy & Environ Materials

138

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Rechargeable Li-ion batteries (LIBs) with nonaqueous electrolytes that employ graphite as an anode active material have been used for electric vehicle recently. However, these lithium storage devices have been subject to safety issue, which arise from short circuit during fast charging and discharging process. [1][2][3] This issue generally ascribes to the low intercalation voltage plateau of graphite at about 0 V (vs Li/Li + ), which might generate lithium dendrites on it. [4,5] Thus, it is urgent to exploit appropriate anode materials to cut down the dependence over graphite. Transition metal oxides (TMOs), especially cobalt oxide and nickel oxide, such as NiO, CoO, and Co 3 O 4 are deemed as the most competitive substitutes for graphite in battery industry due to its high-reversible capacity, good safety, and high power density. [6][7][8][9][10][11] However, monometal oxides suffer from low coulombic efficiencies in initial charge-discharge process, unfixed SEI film, large voltage hysteresis, and inferior cycling ability. [12] Nevertheless, these weaknesses could be improved by introducing different cations because bimetallic oxide reveals better electrochemical activities and higher electrical conductivities than monometal oxides. [13] Hence, nickel-cobalt mixed-metal oxides, such as NiCo 2 O 4 and CoNiO 2 , have received a wide range of attention from all over the world as electrode materials for LIB. [14][15][16][17] Among them, NiCo 2 O 4 gained tremendous attention because of its large theoretical capacity (890 mA h g −1 ) and excellent electron conductivity than their monometal counterpart. [18] But recent researches revealed that NiCo 2 O 4 possessed irreversible electrochemical reaction and therefore its outstanding electron conductivity might not exist any longer. [19,20] But on the other hand, another nickel-cobalt oxide, CoNiO 2 can be a brilliant choice due to its high-reversibility, high capacity and moderate volume expansion. But CoNiO 2 ineluctably undergo several primary issues: volume changes during charge-discharge processes, pulverization, and aggregation of pristine electrode materials and low electronic conductivity on account of its inherent conversion-type lithium storage mechanism and intrinsic semi-conducting nature. All these issues impede the speed and completeness of conversion reaction and then result in poor cycling ability and rate performance. To surmount these limitations, one viable way is to construct and prepare advanced electrode with favorable morphology and reasonable composition. Specially, hierarchical structures, which are constituted by elementary building unit (e.g., nanoparticles, nanowires, and nanosheets) with a porous peculiarity, have appealed to many researchers. [21][22][23] This is because such hierarchical structures succeed to elementary building units as well as benefits on account of the synergistic effects between

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“…Recently, CeO 2 has gained particular importance as a promising choice for electrocatalytic applications when combined with alloy components due to the high density of oxygen vacancy on the surface. , The defect structure of CeO 2 provides suitable absorption sites for electrocatalytic activity . Metal/CeO 2 , metal oxide/CeO 2 , metal hydroxide/CeO 2 , and metal sulfide/CeO 2 have been reported in the literature with improved electrocatalytic activity. In addition to the correlation of metal alloys and metal oxides, the structure of these materials also plays a critical role in improving the electrolytic efficiency by providing surface reactions and the diffusion of active species and electron transmission.…”

Section: Introductionmentioning

confidence: 99%

Heterostructure NiCo-Alloy Nanosheet Embedded Ceria Nanorods: A Highly Efficient Bifunctional Electrocatalyst toward Oxygen Evolution Reaction and Oxygen Reduction Reaction

Hameed,

Nasim,

Nisar

et al. 2023

Energy Fuels

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The development of low-cost bifunctional electrocatalysts with high efficiency and comparable activity to the benchmark catalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is crucial to meet the practical demands of integrated water splitting and regenerative metal−air battery systems. In this study, a heterointerface structure of NiCo-alloy@ CeO 2 has been synthesized via a facile synthetic approach. NiCo-alloy nanosheets are rooted over the surface of the CeO 2 nanorods, triggering an interfacial synergistic effect that significantly improves electrochemical performance. The resultant bifunctional electrocatalyst (NiCo-alloy@ CeO 2 ) demonstrates effective and enduring electrocatalytic ability toward OER and ORR in an alkaline environment. The catalyst exhibits a half-wave potential (E 1/2 ) of 0.81 V RHE and onset potential (E onset ) of 0.89 V RHE for ORR in 0.1 M KOH. An overpotential (η) of 170 mV vs RHE at 20 mA cm −2 has been recorded for OER, which is superior to the ruthenium-based electrocatalysts. The low bifunctionality index (BI) of NiCo-alloy@CeO 2 of ∼0.48 V indicates the ability of the synthesized material to be employed in metal−air batteries. This NiCo-alloy@CeO 2 might be implemented in reliable and sustainable energy devices, paving the way for the design and fabrication of commercialized electrocatalysts, water splitting, and metal−air batteries.

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Surface engineering of CeO2–TiO2 composite electrode for enhanced electron transport characteristics and alkaline hydrogen evolution reaction

Cited by 9 publications

References 57 publications

Recent Advances of CeO₂‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

Recent Advances of CeO₂‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

Approaching High‐Performance Lithium Storage Materials by Constructing Hierarchical CoNiO₂@CeO₂ Nanosheets

Heterostructure NiCo-Alloy Nanosheet Embedded Ceria Nanorods: A Highly Efficient Bifunctional Electrocatalyst toward Oxygen Evolution Reaction and Oxygen Reduction Reaction

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Surface engineering of CeO2–TiO2 composite electrode for enhanced electron transport characteristics and alkaline hydrogen evolution reaction

Cited by 9 publications

References 57 publications

Recent Advances of CeO2‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

Recent Advances of CeO2‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

Approaching High‐Performance Lithium Storage Materials by Constructing Hierarchical CoNiO2@CeO2 Nanosheets

Heterostructure NiCo-Alloy Nanosheet Embedded Ceria Nanorods: A Highly Efficient Bifunctional Electrocatalyst toward Oxygen Evolution Reaction and Oxygen Reduction Reaction

Contact Info

Product

Resources

About

Recent Advances of CeO₂‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

Recent Advances of CeO₂‐Based Electrocatalysts for Oxygen and Hydrogen Evolution as well as Nitrogen Reduction

Approaching High‐Performance Lithium Storage Materials by Constructing Hierarchical CoNiO₂@CeO₂ Nanosheets