Recent Development of Oxygen Evolution Electrocatalysts in Acidic Environment

An, Li; Wei, Chao; Lü, Min; Liu, Hanwen; Chen, Yubo; Scherer, Guenther G.; Fisher, Adrian C.; Xi, Pinxian; Xu, Zhichuan J.; Yan, Chun‐Hua

doi:10.1002/adma.202006328

Cited by 423 publications

(281 citation statements)

References 244 publications

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“…In the LOM, scaling limitations occurring in the AEM improves and, basically, it involves the oxidation of lattice oxygen. The acidic-based LOM can be described as follows [48]:…”

Section: H2o + Energy → 2h2 + O2mentioning

confidence: 99%

“…In the AEM, the process involves a fourelectron transfer where all the metallic active sites facilitate the reaction of oxygen intermediate species, resulting in a decrease of overpotential. The fundamental steps for AEM can be described as follows in alkaline conditions [48]: where * is an active site, OL is lattice oxygen, and Vo is a surface oxygen vacancy. .…”

Section: Fundamental Parameters To Evaluate Electrocatalystsmentioning

confidence: 99%

“…In the AEM, the process involves a four-electron transfer where all the metallic active sites facilitate the reaction of oxygen intermediate species, resulting in a decrease of overpotential. The fundamental steps for AEM can be described as follows in alkaline conditions [ 48 ]: 4OH − → OH* + 3OH − + e − OH* + 3OH − + e − → O* + 2OH + + H 2 O + 2e − O* +2OH − + H 2 O + 2e − → OOH* + OH + + 2H 2 O+ e − OOH* + OH − + 2H 2 O + 3e − → O 2 (g) + 2H 2 O + H+ + 4e − …”

Section: Electrocatalytic Water Splittingmentioning

confidence: 99%

“…In the LOM, scaling limitations occurring in the AEM improves and, basically, it involves the oxidation of lattice oxygen. The acidic-based LOM can be described as follows [ 48 ]: H 2 O + * → OH* + H + + e − OH* → O* + H + + e − O* + O L → O 2 + V o V o + H 2 O → OH* + H + + e − H* → * + H + + e − where * is an active site, O L is lattice oxygen, and V o is a surface oxygen vacancy.…”

Section: Electrocatalytic Water Splittingmentioning

confidence: 99%

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Transition Metal-Based 2D Layered Double Hydroxide Nanosheets: Design Strategies and Applications in Oxygen Evolution Reaction

et al. 2021

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Water splitting driven by renewable energy sources is considered a sustainable way of hydrogen production, an ideal fuel to overcome the energy issue and its environmental challenges. The rational design of electrocatalysts serves as a critical point to achieve efficient water splitting. Layered double hydroxides (LDHs) with two-dimensionally (2D) layered structures hold great potential in electrocatalysis owing to their ease of preparation, structural flexibility, and tenability. However, their application in catalysis is limited due to their low activity attributed to structural stacking with irrational electronic structures, and their sluggish mass transfers. To overcome this challenge, attempts have been made toward adjusting the morphological and electronic structure using appropriate design strategies. This review highlights the current progress made on design strategies of transition metal-based LDHs (TM-LDHs) and their application as novel catalysts for oxygen evolution reactions (OERs) in alkaline conditions. We describe various strategies employed to regulate the electronic structure and composition of TM-LDHs and we discuss their influence on OER performance. Finally, significant challenges and potential research directions are put forward to promote the possible future development of these novel TM-LDHs catalysts.

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“…In the LOM, scaling limitations occurring in the AEM improves and, basically, it involves the oxidation of lattice oxygen. The acidic-based LOM can be described as follows [48]:…”

Section: H2o + Energy → 2h2 + O2mentioning

confidence: 99%

Section: Fundamental Parameters To Evaluate Electrocatalystsmentioning

confidence: 99%

Section: Electrocatalytic Water Splittingmentioning

confidence: 99%

Section: Electrocatalytic Water Splittingmentioning

confidence: 99%

See 2 more Smart Citations

Transition Metal-Based 2D Layered Double Hydroxide Nanosheets: Design Strategies and Applications in Oxygen Evolution Reaction

et al. 2021

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“…However, due to narrow load range and poor flexibility, it can be only driven by stable thermal power generation 7,8 . Recently, proton exchange membrane water electrolyzer (PEMWE) with easy assembly with renewable energy sources is highlighted as the new-generation candidate, in view of great power density, high efficiency at low temperature and low gas crossover 9,10 . Generally, noble-metal-based materials (Pt and Ir, Ru oxides) are the benchmark HER and OER electrocatalysts in acidic media with high activity and durability, but suffer from high cost and scarcity [11][12][13] .…”

mentioning

confidence: 99%

Vanadium-incorporated CoP2 with lattice expansion for highly efficient acidic overall water splitting

Wang

Jiao

Yang

et al. 2021

Preprint

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Proton exchange membrane water electrolyzer (PEMWE) in acidic media is a hopeful scenario for hydrogen production by using renewable energy sources, but the grand challenge lies in substituting active and stable noble-metal catalysts. Herein, a robust electrocatalyst of V-CoP2 porous nanowires arranged on carbon cloth is successfully fabricated via incorporating vanadium into CoP2 lattice. Structural characterizations and theoretical analysis indicate that lattice expansion of CoP2 caused by V incorporation results in the upshift of d-band center, which is conducive to hydrogen adsorption for boosting HER activity. Besides, V promotes surface reconstruction to generate a thicker Co3O4 layer that enhances acid-corrosion resistance and optimizes the adsorption of water and oxygen-containing species, thus improving OER activity and stability. Accordingly, it presents a superior acidic overall water splitting activity (1.47 V@10 mA cm-2) over Pt-C/CC||RuO2/CC, and remarkable stability. This work proposes a new route to design efficient electrocatalysts via lattice engineering for PEMWE.

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On the Durability of Iridium‐Based Electrocatalysts toward the Oxygen Evolution Reaction under Acid Environment

She

Zhao

et al. 2021

Adv Funct Materials

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Proton exchange membrane water electrolyzers (PEMWEs) driven by renewable electricity provide a facile path toward green hydrogen production, which is critical for establishing a sustainable hydrogen society. The high working potential and the corrosive environment pose severe challenges for developing highly active and durable electrocatalysts for the oxygen evolution reaction (OER). To date, iridium (Ir)‐based materials, largely metallic Ir and Ir‐based oxides, are the most suitable OER electrocatalysts for PEMWEs due to their balanced activity and durability. Tremendous efforts have been devoted to improving the specific activity of Ir species to reduce the cost; however, advances in enhancing the durability of Ir‐based electrocatalysts are rather limited. In this review, the recent research progress on tackling the stability issues of Ir‐based OER electrocatalysts in acid media is summarized, aiming to provide inspiration for designing highly active and stable Ir‐based electrocatalysts. The OER mechanism and the associated failure modes of active Ir species are summarized. Then, mechanistic studies on the dissolution behavior of Ir species and experimental attempts on enhancing the durability of Ir‐based electrocatalysts are discussed. The personal perspectives for future studies on Ir‐based OER electrocatalysts are also provided.

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Recent Development of Oxygen Evolution Electrocatalysts in Acidic Environment

Cited by 423 publications

References 244 publications

Transition Metal-Based 2D Layered Double Hydroxide Nanosheets: Design Strategies and Applications in Oxygen Evolution Reaction

Transition Metal-Based 2D Layered Double Hydroxide Nanosheets: Design Strategies and Applications in Oxygen Evolution Reaction

Vanadium-incorporated CoP2 with lattice expansion for highly efficient acidic overall water splitting

On the Durability of Iridium‐Based Electrocatalysts toward the Oxygen Evolution Reaction under Acid Environment

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