Advances in efficient electrocatalysts based on layered double hydroxides and their derivatives

Zhou, Lei; Shao, Mingfei; Wei, Min; Duan, Xue

doi:10.1016/j.jechem.2017.09.015

Cited by 103 publications

(70 citation statements)

References 206 publications

(302 reference statements)

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“…A few examples of self‐supporting mixed metal oxide and metal alloys, derived from layered double hydroxides (LDHs), have been reported . LDHs, with the chemical formula of [M 2+ 1− x M 3+ x (OH) 2 ] z + A n − z / n •mH 2 O, are a class of 2D anionic clays made up of positively charged brucite‐like host layers and exchangeable charge‐balancing interlayer anions.…”

Section: Introductionmentioning

confidence: 99%

Self‐Supporting Ni‐M (M = Mo, Ge, Sn) Alloy Nanosheets via Topotactic Transformation of Oxometallate Intercalated Layered Nickel Hydroxide Salts: Synthesis and Application for Electrocatalytic Hydrogen Evolution Reaction

Xie

Zou

Deng

et al. 2020

Adv Materials Inter

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Metal alloys are valuable for achieving energy‐ and cost‐efficient electrocatalysis. To maximize active sites exposure and electron transport, a general method to prepare binder‐free Ni‐M (M = Mo, Ge, Sn) bimetallic alloy nanosheets electrocatalyst for the hydrogen evolution reaction (HER) is successfully developed for the first time, via topotactic transformation of layered nickel hydroxide salts (Ni‐LHS). The obtained bimetallic alloys show much improved HER performance to that of Ni. In particular, Ni4Mo alloy nanosheets exhibit HER activity with an overpotential of only 69.6 mV at 100 mA cm−2 and a low Tafel slope of 37 mV decade−1 in alkaline medium, due to large electrochemical active surface area and low charge transfer resistance. Moreover, Ni4Mo alloy nanosheets also show high HER activity in both acidic and neutral electrolytes with long‐term stability, demonstrating superior activity comparable to or better than state‐of‐the‐art commercial Pt/C catalyst. This topotactic transformation method using LHS precursors provides a way to design and fabricate cost‐effective and energy‐efficient ultrathin 2D bimetallic alloy nanosheets for electrocatalysis, greatly broadening the scope of the currently available self‐supporting metal alloy electrocatalysts.

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Section: Introductionmentioning

confidence: 99%

Self‐Supporting Ni‐M (M = Mo, Ge, Sn) Alloy Nanosheets via Topotactic Transformation of Oxometallate Intercalated Layered Nickel Hydroxide Salts: Synthesis and Application for Electrocatalytic Hydrogen Evolution Reaction

Xie

Zou

Deng

et al. 2020

Adv Materials Inter

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“…From this view of point, constructing LDH‐INEs with controllable morphology and components is crucial required. Toward this goal, a series of creative synthetic approaches, such as template‐directed growth, hydro/solvothermal method, and electrochemical deposition, have been widely employed to construct LDH‐INEs, including nanosheet arrays, hierarchical core–shell arrays, and hollow structured arrays on various substrates, and achieved excellent electrochemical performance for energy‐related applications …”

Section: Ldh‐inesmentioning

confidence: 99%

Integrated Nanostructural Electrodes Based on Layered Double Hydroxides

Xie

Song

et al. 2019

Energy & Environ Materials

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Layered double hydroxides (LDHs), as a class of typical two‐dimensional materials, have sparked increasing interest in the field of energy storage and conversion. In the last few years, the research about LDHs as electrode active materials has seen much progress in terms of structure designing, material synthesis, properties tailoring, and applications. In this review, we focus on the integrated nanostructural electrodes (INEs) construction using LDH materials, including pristine LDH‐INEs, hybrid LDH‐INEs, and LDH derivative‐INEs, as well as the performance advantages and applications of LDH‐INEs. Moreover, in the final section, the insights about challenges and prospective in this promising research field were concluded, especially in regulation of intrinsic activity and uncovering of structure–activity relationship, which would push forward the development of this fast‐growing field.

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“…LDHs are a class of layered materials consisting of positively charged layers and charge-balancing anoins in the interlayer region. [145] Some excellent summary and perspectives in the rational designs of LDHs as electrocatalysts for OER or water splitting are highly recommended. The intercalated anions are typically carbonates (CO 3 2À ), but they can easily be replaced by other anions (e. g., NO 3 À , SO 4 2À , Cl À , Br À ).…”

Section: Layered Double Hydroxides Composited With Nanocarbonsmentioning

confidence: 99%

“…The positively charged layers are constructed by partially substituting divalent cations (e. g., Ni 2 + , Mn 2 + , Co 2 + ) with trivalent cations (e. g., Al 3 + , Co 3 + , Fe 3 + , Mn 3 + ). [143][144][145] Up to now, LDHs/nanocarbons hybrids have already been widely used in rechargeable Zn-air batteries, [73,[146][147][148] owing to superior OER catalytic properties of LDHs. Therefore, the LDH structure is attractive for using in electrochemical processes as it is highly accessible to electrolytes by anion exchange.…”

Section: Layered Double Hydroxides Composited With Nanocarbonsmentioning

confidence: 99%

Nanocarbon‐Based Electrocatalysts for Rechargeable Aqueous Li/Zn‐Air Batteries

Wang

Chen

et al. 2018

ChemElectroChem

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Zn-air batteries have become the most attractive energy storage devices because of their extremely high theoretical energy density, which enables electric vehicles to drive long range. However, current achievements still suffer from poor cycle life, low practical energy density, low round-trip efficiency, and high manufacturing costs. One of the key challenges is the sluggish kinetics of oxygen electrochemistry during discharge and charge cycles. Thus, significant breakthroughs in design and synthesis of efficient electrocatalysts for the oxygen redox reaction are highly demanded. Nanocarbons, especially heteroatoms doped nanocarbons, are potential oxygen reduction reaction (ORR) catalysts due to the reasonable balance between catalytic activity, durability, and cost. Importantly, by introduction of transition metal nanoparticles, spinel oxides, layered-double hydroxides, perovskite oxides, and other metal oxides, the constructed nanocarbon-based materials could deliver promising bifunctional ORR and oxygen evolution reaction (OER) catalytic properties, which could be employed as air-cathode materials to improve energy storage performances, even to get commercialized. Here, an overview of the recent progress of nanocarbon-based electrocatalysts as air-cathode materials for rechargeable aqueous Li/Zn-air batteries is provided, aiming to highlight the benefits and issues of nanocarbon-based electrocatalysts as well as to outline the most promising results and applications so far.[a] Prof.

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Advances in efficient electrocatalysts based on layered double hydroxides and their derivatives

Cited by 103 publications

References 206 publications

Self‐Supporting Ni‐M (M = Mo, Ge, Sn) Alloy Nanosheets via Topotactic Transformation of Oxometallate Intercalated Layered Nickel Hydroxide Salts: Synthesis and Application for Electrocatalytic Hydrogen Evolution Reaction

Self‐Supporting Ni‐M (M = Mo, Ge, Sn) Alloy Nanosheets via Topotactic Transformation of Oxometallate Intercalated Layered Nickel Hydroxide Salts: Synthesis and Application for Electrocatalytic Hydrogen Evolution Reaction

Integrated Nanostructural Electrodes Based on Layered Double Hydroxides

Nanocarbon‐Based Electrocatalysts for Rechargeable Aqueous Li/Zn‐Air Batteries

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