Noble metal-free electrocatalytic materials for water splitting in alkaline electrolyte

Li, Yingjie; Zhou, Lei; Guo, Shaojun

doi:10.1016/j.enchem.2021.100053

Cited by 75 publications

(46 citation statements)

References 191 publications

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“…MN-based materials can be a viable option for the replacement of conventional noble metals for electrochemical hydrogen production due to their excellent properties such as the availability of abundant electrochemical active sites, high electronic conductivity, and thermal and mechanical stability, and tunable surface and morphology [ 114 ]. In particular, the introduction of the interstitial nitrogen atoms results in increased lattice distance of the metal which imparts a noble metal like electronic structure with excellent electron donating ability and high catalytic activity for HER [ 189 ]. There are main parameters that are needed to understand the electrocatalytic activity for HER.…”

Section: Electrochemical Production Of Hydrogenmentioning

confidence: 99%

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Gujral

Singh

Baskar

et al. 2022

Science and Technology of Advanced Materials

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The over-dependence on fossil fuels is one of the critical issues to be addressed for combating greenhouse gas emissions. Hydrogen, one of the promising alternatives to fossil fuels, is renewable, carbon-free, and non-polluting gas. The complete utilization of hydrogen in every sector ranging from small to large scale could hugely benefit in mitigating climate change. One of the key aspects of the hydrogen sector is its production via cost-effective and safe ways. Electrolysis and photocatalysis are well-known processes for hydrogen production and their efficiency relies on electrocatalysts, which are generally noble metals. The usage of noble metals as catalysts makes these processes costly and their scarcity is also a limiting factor. Metal nitrides and their porous counterparts have drawn considerable attention from researchers due to their good promise for hydrogen production. Their properties such as active metal centres, nitrogen functionalities, and porous features such as surface area, pore-volume, and tunable pore size could play an important role in electrochemical and photocatalytic hydrogen production. This review focuses on the recent developments in metal nitrides from their synthesis methods point of view. Much attention is given to the emergence of new synthesis techniques, methods, and processes of synthesizing the metal nitride nanostructures. The applications of electrochemical and photocatalytic hydrogen production are summarized. Overall, this review will provide useful information to researchers working in the field of metal nitrides and their application for hydrogen production.

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Section: Electrochemical Production Of Hydrogenmentioning

confidence: 99%

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Gujral

Singh

Baskar

et al. 2022

Science and Technology of Advanced Materials

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“…Actually, electrochemical hydrogenation in the alkaline electrolyte is proceeded according to two successive steps, i.e., water splitting to produce adsorbed H atoms (denoted as H ads ) on the catalyst surface by following H 2 O + e − → H ads + OH − (Volmer step), and then two H ads atoms are added to alkynes to produce alkenes by following 2H ads + R-CuCH → R-CHvCH 2 . 36,37 Obviously, the ECSH activity and alkene selectivity are closely related to the interfacial water structure. To verify this conclusion, we carry out ECSH of alkynes in pure ethanol, a mixture of ethanol + KOH solution (V/V = 2 : 1) or KOH solution (Fig.…”

Section: Mechanistic Insight Of the Interfacial Water Structure On Th...mentioning

confidence: 99%

Regulating the interfacial water structure by tensile strain to boost electrochemical semi-hydrogenation of alkynes

et al. 2022

Inorg. Chem. Front.

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“…Among various hydrogen energy technologies, water splitting using electrocatalysts is one of the most promising approaches. , It is widely known that Pt/C and IrO 2 (or RuO 2 ) show excellent hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) performances; however, their wide application is significantly limited due to their cost and low abundance . Thus, it is necessary to develop noble metal-free electrocatalysts with optimal stability, excellent catalytic performance, and economic viability that can be used on an industrial scale. − …”

Section: Introductionmentioning

confidence: 99%

Amorphous Yolk–Shelled ZIF-67@Co₃(PO₄)₂ as Nonprecious Bifunctional Catalysts for Boosting Overall Water Splitting

Chen

Jiang

et al. 2021

Inorg. Chem.

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It is challenging to generate inexpensive and noble metal-free catalysts for efficient overall water splitting (OWS). To achieve this goal, suitable tuning of the structure and composition of electrocatalytic materials is a promising approach that has attracted much attention in recent years. Herein, novel hybrid amorphous ZIF-67@Co 3 (PO 4 ) 2 electrocatalysts with yolk−shell structures were prepared using a reflux method. It is demonstrated that yolk−shelled ZIF-67@Co 3 (PO 4 ) 2 is not only an active catalyst for the hydrogen evolution reaction (HER) but also an efficient catalyst for the oxygen evolution reaction (OER). The optimized composite electrode showed superior performance with low overpotentials of 73 and 334 mV @ 10 mA•cm −2 toward HER and OER, respectively, and a low potential of 1.62 V @ 10 mA• cm −2 and 1.66 V @ 30 mA•cm −2 in a practical OWS test under alkaline conditions. N−O bonds were formed to connect the two components of ZIF-67 and Co 3 (PO 4 ) 2 in the composite ZIF-67@Co 3 (PO 4 ) 2 , which indicates that the two components are synergistic but not isolated, and this synergistic effect may be one of the important reasons to boost the oxygen and hydrogen evolution performances of the hybrid. Based on experimental data, the high electrocatalytic performance was inferred to be related to the unique structure of ZIF-67, tuning the ability of Co 3 (PO 4 ) 2 and synergism between ZIF-67 and Co 3 (PO 4 ) 2 . The preparation strategy reported herein can be extended for the rational design and synthesis of cheap, active, and long-lasting bifunctional electrocatalysts for OWS and other renewable energy devices.

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Noble metal-free electrocatalytic materials for water splitting in alkaline electrolyte

Cited by 75 publications

References 191 publications

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Regulating the interfacial water structure by tensile strain to boost electrochemical semi-hydrogenation of alkynes

Amorphous Yolk–Shelled ZIF-67@Co₃(PO₄)₂ as Nonprecious Bifunctional Catalysts for Boosting Overall Water Splitting

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Noble metal-free electrocatalytic materials for water splitting in alkaline electrolyte

Cited by 75 publications

References 191 publications

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Regulating the interfacial water structure by tensile strain to boost electrochemical semi-hydrogenation of alkynes

Amorphous Yolk–Shelled ZIF-67@Co3(PO4)2 as Nonprecious Bifunctional Catalysts for Boosting Overall Water Splitting

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Amorphous Yolk–Shelled ZIF-67@Co₃(PO₄)₂ as Nonprecious Bifunctional Catalysts for Boosting Overall Water Splitting