2016
DOI: 10.1039/c6ta04052g
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Rational design of cobalt–chromium layered double hydroxide as a highly efficient electrocatalyst for water oxidation

Abstract: The design of high performance, stable and cost-effective eletrocatalyst for oxygen evolution is crucial for the H2 production from electrochemical water splitting. Here, dual-functional-site catalyst, cobalt-chromium layer double hydroxide (CoCr LDH) nanosheets are designed and synthesized , where the Co 2+ is the catalytic active site and Cr 3+ is the charge transfer site.It's for the first time for OER investigation of CoCr LDH. The CoCr LDH nanosheets have high specific surface area of 151.78 m 2 g -1 and … Show more

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Cited by 210 publications
(132 citation statements)
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“…[4] However,t heir applicationh as been greatly limitedb yt heir small reserves and high costs.I ti sn ecessary to develop OER catalysts with low cost, abundant reserves, and superior performance. [6] Various metal oxides and metal hydroxides,i ncluding cobalt oxides, [2c, 7] Ni-Co oxides, [8] Ni-Fe-Co oxides, [9] nickelh ydroxides, [10] andC o-Cr hydroxides [11] have been intensively studied as OER catalysts. [6] Various metal oxides and metal hydroxides,i ncluding cobalt oxides, [2c, 7] Ni-Co oxides, [8] Ni-Fe-Co oxides, [9] nickelh ydroxides, [10] andC o-Cr hydroxides [11] have been intensively studied as OER catalysts.…”
Section: Introductionmentioning
confidence: 99%
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“…[4] However,t heir applicationh as been greatly limitedb yt heir small reserves and high costs.I ti sn ecessary to develop OER catalysts with low cost, abundant reserves, and superior performance. [6] Various metal oxides and metal hydroxides,i ncluding cobalt oxides, [2c, 7] Ni-Co oxides, [8] Ni-Fe-Co oxides, [9] nickelh ydroxides, [10] andC o-Cr hydroxides [11] have been intensively studied as OER catalysts. [6] Various metal oxides and metal hydroxides,i ncluding cobalt oxides, [2c, 7] Ni-Co oxides, [8] Ni-Fe-Co oxides, [9] nickelh ydroxides, [10] andC o-Cr hydroxides [11] have been intensively studied as OER catalysts.…”
Section: Introductionmentioning
confidence: 99%
“…[5] In the past few years, new OER catalysts have been explored as substitutes for IrO 2 and RuO 2 ,a nd some significant progress has been made. [6] Various metal oxides and metal hydroxides,i ncluding cobalt oxides, [2c, 7] Ni-Co oxides, [8] Ni-Fe-Co oxides, [9] nickelh ydroxides, [10] andC o-Cr hydroxides [11] have been intensively studied as OER catalysts. Qiao et al synthesized hollow Co 3 O 4 microtube arrays by as elf-assembly method.…”
Section: Introductionmentioning
confidence: 99%
“…[27,64,[78][79][80][81][82][83][84][85] In particular, 3d transition metals such as Zn, Mn, Fe, and Ni have been mixed with Co for the improvement of the catalytic activity. Zou et al reported Zn-Co LDH prepared by a simple coprecipitation method as an efficient water and alcohol oxidation catalyst.…”
Section: Co-based Ldhs and Ternary Layered Hydroxidesmentioning
confidence: 99%
“…Therefore, CoFe LDHs have been also developed as advanced OER catalysts . Additionally, Fe‐free TM LDHs have been also reported such as NiV, CoMn, CoCr, CoAl, and CoZn . Notably, it is also found that the multi‐cations in LDH structure inevitably form a segregation of “lakes” (undesired para‐phase), which reduces the OER activity .…”
Section: Nonprecious‐metal‐based Catalystsmentioning
confidence: 99%
“…The OER performance mechanism of NiFeCr LDH was discussed systematically: (1) the incorporation of Cr improves the conductivity; (2) Cr is partially dissolved in alkaline media generating a porous nanomesh structure with enlarged ECSA; (3) the synergistic effect emanated from Cr invasion generates more active β‐NiOOH intermediate; (4) under OER potential, Cr oxidizes into 6+ state and Ni oxidizes to a relatively lower oxidation state (≤3+). In other words, Ni is “cathodically protected” and more active β‐NiOOH in ternary NiFeCr composite is produced during OER . Other ternary systems such as NiCoFe and NiFeV LDHs were also developed as highly active OER catalysts .…”
Section: Regulation Effect In Multi‐metallic Oer Catalystsmentioning
confidence: 99%