A novel non-noble electrocatalyst for PEM fuel cell based on molybdenum nitride

Zhong, Hexiang; Zhang, Huamin; Liu, Gang; Liang, Yong‐Min; Hu, Jingwei; Yi, Baolian

doi:10.1016/j.elecom.2006.02.020

Cited by 196 publications

(104 citation statements)

References 24 publications

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“…This result indicates that MoN/C electrocatalyst might show the high reactivity for oxygen reduction in cathode side. Also, 18 wt% Mo 2 N/C electrocatalyst was evaluated for ORR in real PEMFC system [114]. The single cell evaluation was carried out at 80 °C with 46.2 wt% Pt/C catalyst (0.3 mg Pt /cm 2 ) at anode side.…”

Section: Methanol Oxidation On Tmnsmentioning

confidence: 99%

Transition Metal Carbides and Nitrides as Electrode Materials for Low Temperature Fuel Cells

2009

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Transition metal carbides (TMCs) and transition metal nitrides (TMNs) have attracted attention as promising electrocatalysts that could replace noble metals of high price and limited supply. Relative to parent metals, TMC and TMN behave like noble metals for electrochemical reactions such as oxidation of hydrogen, CO and alcohols, and reduction of oxygen. When TMC and TMN are combined with other metals, the electrocatalytic synergy is often observed in electrochemical reactions. Thus, combinations with a minute amount of Pt or even non-Pt metals give performance comparable to heavily loaded Pt-based electrocatalysts for low temperature fuel cells. It appears that TMC based electrocatalysts are more active as anode catalysts for oxidation of fuels, whereas TMN based catalysts are more active for cathode catalysts for oxygen reduction and more stable.

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Section: Methanol Oxidation On Tmnsmentioning

confidence: 99%

Transition Metal Carbides and Nitrides as Electrode Materials for Low Temperature Fuel Cells

2009

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“…Recently, some of them were found to have catalytic properties similar to those of noble metals like Pd and Pt [85,86]. However, in terms of fuel cell applications, there have not been many publications dealing with metal nitrides as catalyst supports thus far.…”

Section: Nitridesmentioning

confidence: 99%

“…Another interesting nitride support is Mo2N, which was reported both as a catalyst substitute for Pt on carbon [85,97] and as a catalyst support [15]. In these studies, Mo2N supports were prepared by polymer-assisted deposition, and subsequently, Pt nanoparticles were grown on it.…”

Section: Nitridesmentioning

confidence: 99%

Advances in Ceramic Supports for Polymer Electrolyte Fuel Cells

Lori

Elbaz

2015

Catalysts

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Durability of catalyst supports is a technical barrier for both stationary and transportation applications of polymer-electrolyte-membrane fuel cells. New classes of non-carbon-based materials were developed in order to overcome the current limitations of the state-of-the-art carbon supports. Some of these materials are designed and tested to exceed the US DOE lifetime goals of 5000 or 40,000 hrs for transportation and stationary applications, respectively. In addition to their increased durability, the interactions between some new support materials and metal catalysts such as Pt result in increased catalyst activity. In this review, we will cover the latest studies conducted with ceramic supports based on carbides, oxides, nitrides, borides, and some composite materials.

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“…And later, Xia et al [541] and Zhong et al [542] in separate studies introduced Mo 2 N as ORR catalysts, but found in their results that these TMNs lacked the expected catalytic activities required for ORR catalysts. However, the same authors also reported that these TMNs possessed good CO tolerance and electrochemical stability.…”

Section: Nitrides As Corementioning

confidence: 99%

Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications

Wang

Luo

et al. 2018

Electrochem. Energ. Rev.

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Pt-based catalysts are the most efficient catalysts for low-temperature fuel cells. However, commercialization is impeded by prohibitively high costs and scarcity. One of the most effective strategies to reduce Pt loading is to deposit a monolayer or a few layers of Pt over other metal cores to form core-shell-structured electrocatalysts. In core-shell-structured electrocatalysts, the compositions of the core can be divided into five classes: single-precious metallic cores represented by Pd, Ru, and Au; singlenon-precious metallic cores represented by Cu, Ni, Co, and Fe; alloy cores containing 3d, 4d or 5d metals; and carbide and nitride cores. Of these, researchers have found that carbide and nitride cores can yield tremendous advantages over alloy cores in terms of cost and promotional activities of Pt shells. In addition, desirable shells with reasonable thicknesses and compositions have been recognized to play a dominant role in electrocatalytic performances. And recently, researchers have also found that the catalytic activity of core-shell-structured catalysts is dependent on the binding energy of the adsorbents, which is determined by the d-band center of Pt. The shifting of this d-band center in turn is mainly affected by strain and electronic effects, which can be adjusted by adjusting core compositions and shell thicknesses of catalysts. In the development of these core-shell structures, optimal synthesis methods are of primary concern because they directly determine the practical application potential of the resulting electrocatalysts. And in this article, the principles behind core-shell-structured low-Pt electrocatalysts and the developmental progresses of various synthesis methods along with the traits of each type of core and its effects on Pt shell catalytic activities are discussed. In addition, perspectives on this type of catalyst are discussed and future research directions are proposed.

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A novel non-noble electrocatalyst for PEM fuel cell based on molybdenum nitride

Cited by 196 publications

References 24 publications

Transition Metal Carbides and Nitrides as Electrode Materials for Low Temperature Fuel Cells

Transition Metal Carbides and Nitrides as Electrode Materials for Low Temperature Fuel Cells

Advances in Ceramic Supports for Polymer Electrolyte Fuel Cells

Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications

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