Tailoring of Metal Boride Morphology via Anion for Efficient Water Oxidation

Nsanzimana, Jean Marie Vianney; Gong, Lanqian; Dangol, Raksha; Reddu, Vikas; Jose, Vishal; Xia, Bao Yu; Yan, Qingyu; Lee, Jongmin; Wang, Xin

doi:10.1002/aenm.201901503

Cited by 82 publications

(72 citation statements)

References 33 publications

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“…In addition to the above mentioned non‐noble‐metal‐based catalytic materials, other earth‐abundant metal‐based compounds such as borides,47,90,91 nitrides,48,49,92 cyanides,93 and chlorides,51 have also been proven to be efficient electrocatalysts for the OER. Recently, Nsanzimana et al highlighted an amorphous ternary metallic boride (Fe‐Co‐2.3Ni‐B) electrocatalyst synthesized via a facile chemical reduction strategy 90.…”

Section: Classification Of the Non‐noble‐metal‐based Oer Electrocatalmentioning

confidence: 99%

“…For this reason, we put primary focus on these non‐noble‐metal‐based electrocatalysts in this review. To overcome the high overpotential of the OER, numerous non‐noble‐metal‐based electrocatalysts have been developed, including metals/alloys,23,24 oxides,25–31 hydroxides,32–37 chalcogenides,38–42 phosphides,5,43,44 phosphates/borates,19,45,46 borides,47 nitrites,48,49 and other compounds 50,51…”

Section: Introductionmentioning

confidence: 99%

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Non‐Noble‐Metal‐Based Electrocatalysts toward the Oxygen Evolution Reaction

Zang

et al. 2020

Adv Funct Materials

812

520

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The development of low-cost, high-efficiency, and robust electrocatalysts for the oxygen evolution reaction (OER) is urgently needed to address the energy crisis. In recent years, non-noble-metal-based OER electrocatalysts have attracted tremendous research attention. Beginning with the introduction of some evaluation criteria for the OER, the current OER electrocatalysts are reviewed, with the classification of metals/alloys, oxides, hydroxides, chalcogenides, phosphides, phosphates/borates, and other compounds, along with their advantages and shortcomings. The current knowledge of the reaction mechanisms and practical applications of the OER is also summarized for developing more efficient OER electrocatalysts. Finally, the current states, challenges, and some perspectives for non-noble-metal-based OER electrocatalysts are discussed.

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Section: Classification Of the Non‐noble‐metal‐based Oer Electrocatalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Non‐Noble‐Metal‐Based Electrocatalysts toward the Oxygen Evolution Reaction

Zang

et al. 2020

Adv Funct Materials

812

520

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“…Both the samples were annealed in N 2 gas at 600 °C to obtain pure crystalline phases. Wang and co‐workers performed chemical reduction in an ice bath, under Ar environment, and used different Co precursors (chloride, nitrate, acetate, sulfate) to control the morphology of the resultant Co–B catalyst. They observed that nitrate precursor suppressed the rapid reduction of Co ions, leading to formation of 2D nanosheets, while chloride precursor promoted fast reduction, leading to 3D nanoparticle formation.…”

Section: Synthesis Routes To Obtain Metal Boridesmentioning

confidence: 99%

Metal Boride‐Based Catalysts for Electrochemical Water‐Splitting: A Review

Gupta

Patel

Miotello

et al. 2019

Adv Funct Materials

287

234

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Electrocatalytic water-splitting has gained a firm hold in the area of renewable hydrogen production owing to its integrative compatibility with intermittent energy sources. However, wide-scale implementation of this technology demands discovery of new electrode materials that strike a good balance between efficiency, stability, and cost. In the pool of inexpensive electrodes capable of catalyzing hydrogen and oxygen evolution reactions, metal borides/ borates have made a big splash in the last decade. However, the research in this family of electrocatalysts remains unorganized owing to the diversity of reports. This review summarizes the past and present research progress in metal borides/borates for electrocatalytic water-splitting. The fundamental reasons for electrochemical behavior in different metal borides/borates are highlighted here, also including some comments regarding erroneous practices in the performance evaluation of metal borides/borates. Various strategies used to enhance the electrocatalytic performance of metal borides/borates are discussed in detail. Different methods evolved over the years for the synthesis of metal borides/ borates are also discussed. Finally, an assessment of the commercial viability of metal borides/borates is made and future research directions are suggested. multimetal oxides, [18,19] layered double hydroxides, [20] oxyhydroxides, [21] and perovskites. [13,18] In addition to these, there has been the family of transition-metal borides/borates that have garnered enormous interest in the recent past. Though transition-metal borides (TMBs) have been used for water electrolysis since many decades, they were not really seen as potential candidates to replace noble metal catalysts, until recently. Indeed, in 2009, the group of Daniel Nocera reported in situ formed Co [22] and Ni [23] borates as analogous catalysts to Co phosphate, [24] for near-neutral water-splitting. Later, the groups of Hu [25] and Patel [26] reported development of Mo boride and Co boride, respectively, for electrocatalytic water splitting. Following these reports, transition-metal borides/ borates [27][28][29][30][31][32] were developed using various techniques and were used extensively for water-splitting reactions, in different pH solutions. Here, we would like to inform the readers that usually boron-based catalysts that are developed in situ using electrodeposition are referred to as "borates" (denoted as M-B i , M = metal) while those catalysts prepared by any other technique are referred to as "borides" (denoted as M-B). Over the past 5-6 years, a lot of studies have been carried out on borides/borates with remarkable results, presenting new possibilities in search for non-noble electrocatalysts. The electrochemical performance, stability and other important properties of all the metal borides reported so far are enlisted in Table 1 while that of metal borates are listed in Table 2. However, there are a lot of aspects that are not yet understood completely about borides/borates. For instance, the o...

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“…In recent years, various transition metal (TM) phosphides, 10 oxides, 11 chalcogenides, 12 borides, 13 nitrides 14 and their composites 15 have emerged as effective OER catalysts. Among these cost-efficient catalysts, TM phosphides are regarded as catalysts with superior electrocatalytic activity and stability in alkaline media to effectively promote the OER process in terms of thermodynamics and kinetics.…”

Section: Introductionmentioning

confidence: 99%