Oxygen reduction reaction activity of LaMn1-xCoxO3-graphene nanocomposite for zinc-air battery

Hu, Jie; Wang, Lina; Shi, Lei; Huang, Hao

doi:10.1016/j.electacta.2015.02.048

Cited by 114 publications

(60 citation statements)

References 36 publications

(34 reference statements)

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“…Figure a displays the resultant Mn 2 p XPS results. The separation distance between the characteristic peaks for Mn 2 p 3/2 and Mn 2 p 1/2 is approximately 11.7 eV; this is in close agreement with the literature . The progressive shift of the positions of both peaks to higher binding energy with increasing P doping content indicates an increasing oxidation state of Mn at a higher doping content …”

Section: Resultssupporting

confidence: 89%

New Phosphorus‐Doped Perovskite Oxide as an Oxygen Reduction Reaction Electrocatalyst in an Alkaline Solution

Shen

Zhu

Sunarso

et al. 2018

Chemistry A European J

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Because of their structural and compositional flexibility, perovskite oxides represent an attractive alternative electrocatalyst class to precious metals for the oxygen reduction reaction (ORR); an important reaction in fuel cells and metal-air batteries. Partial replacement of the original metal cation with another cation, namely, doping, can be used to tailor the ORR activity of perovskite, for which a metal has been exclusively used as the dopant component in the past. Herein, phosphorus is proposed as a non-metal dopant for the cation site to develop a new perovskite family with the formula of La Sr Mn P O (x=0, 0.02, 0.05, and 0.1; denoted as LSM, LSMP0.02, LSMP0.05, and LSMP0.1, respectively). Powder XRD patterns reveal that the solubility of phosphorus in the perovskite structure is around 0.05. Rotating ring-disk electrode experiments in the form of linear-sweep voltammetry scans demonstrated the best ORR performance for LSMP0.05, and also revealed close to a four-electron ORR pathway for all four compositions. A chronoamperometric test (9000 s) and 500 cycle accelerated durability test demonstrated higher durability for LSMP0.05 relative to that of LSM and the commercial 20 wt % Pt/C catalyst. The higher ORR activity for LSMP0.05 is attributed to the optimised average valence of Mn, as evidenced by combined X-ray photoelectron spectroscopy and soft X-ray absorption spectroscopy data. Doping phosphorus into perovskites is an effective way to develop high-performance electrocatalysts for ORR.

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Section: Resultssupporting

confidence: 89%

New Phosphorus‐Doped Perovskite Oxide as an Oxygen Reduction Reaction Electrocatalyst in an Alkaline Solution

Shen

Zhu

Sunarso

et al. 2018

Chemistry A European J

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“…The peaks at 529.4, 531.4, and 532.9 eV are correspond to the lattice oxygen of LaNiO 3 , the adsorbed oxygen (α oxygen) and adsorbed H 2 O, respectively . The peak at 529.4 eV is attributed to the O 2− of the NiO and LaO, and the α oxygen is associated with vacancies . It is clearly observed that the peak intensity of the adsorbed oxygen of LaNiO 3 ‐NCNTs is higher than that of LaNiO 3 , implying that the LaNiO 3 ‐NCNTs have more vacancies than LaNiO 3 .…”

Section: Resultsmentioning

confidence: 99%

Assemblage of Perovskite LaNiO₃ Connected With In Situ Grown Nitrogen‐Doped Carbon Nanotubes as High‐Performance Electrocatalyst for Oxygen Evolution Reaction

Chen

Liu

et al. 2018

Physica Status Solidi (a)

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In this study, the synthesis of nano‐sized phase‐pure perovskite LaNiO3 with in‐situ grown nitrogen doped carbon nanotubes (NCNTs) is reported. The heterogenous material acts as highly active and durable electrocatalyst toward oxygen evolution reaction (OER) in alkaline solution. The LaNiO3 nanoparticles prepared by the conventional method require an overpotential of 490 mV, while the one synthesized by the proposed polyol method in this work requires only 410 mV, and the value can be further decreased to merely 390 mV for the as‐prepared LaNiO3‐NCNTs at a current density of 10 mA cm−2. The high performance of this composite material could be due to the exposure of more active sites existing on the surface of LaNiO3 nanoparticles and the connected NCNTs, which improve the charge transfer from the active LaNiO3 surface to the electrode substrate and therefore outperforms the electrocatalytic activity in comparison to commercial RuO2 catalyst. The synthesis method reported here opens a new way to design advanced perovskite oxides for OER even other applications.

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“…Resultss uggest that the specific surface area of the perovskite LaMn 0.7 Co 0.3 O 3 is about 15.20 m 2 g À1 ,a nd the range of pore sizes is from 8t o3 0nm ( Figure 1d,i nset), which indicates that LaMn 0.7 Co 0.3 O 3 is am esoporous material. [30] Oxygen in the electrolyte can be adsorbed by chemisorbed oxygen, which initiates ar eductionr eaction. and it is smaller than that of LaMnO 3 (0.276 nm).…”

Section: Resultsmentioning

confidence: 99%

Cobalt‐Doped Perovskite‐Type Oxide LaMnO₃ as Bifunctional Oxygen Catalysts for Hybrid Lithium–Oxygen Batteries

Liu

Gong

Wang

et al. 2018

Chemistry An Asian Journal

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Perovskite-type oxides based on rare-earth metals containing lanthanum manganate are promising catalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in alkaline electrolyte. Perovskite-type LaMnO shows excellent ORR performance, but poor OER activity. To improve the OER performance of LaMnO , the element cobalt is doped into perovskite-type LaMnO through a sol-gel method followed by a calcination process. To assess electrocatalytic activities for the ORR and OER, a series of LaMn Co O (x=0, 0.05, 0.1, 0.2, 0.3, 0.4, and 0.5) perovskite oxides were synthesized. The results indicate that the amount of doped cobalt has a significant effect on the catalytic performance of LaMn Co O . If x=0.3, LaMn Co O not only shows a tolerable electrocatalytic activity for the ORR, but also exhibits a great improvement (>200 mV) on the catalytic activity for the OER; this indicates that the doping of cobalt is an effective approach to improve the OER performance of LaMnO . Furthermore, the results demonstrate that LaMn Co O is a promising cost-effective bifunctional catalyst with high performance in the ORR and OER for application in hybrid Li-O batteries.

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Oxygen reduction reaction activity of LaMn1-xCoxO3-graphene nanocomposite for zinc-air battery

Cited by 114 publications

References 36 publications

New Phosphorus‐Doped Perovskite Oxide as an Oxygen Reduction Reaction Electrocatalyst in an Alkaline Solution

New Phosphorus‐Doped Perovskite Oxide as an Oxygen Reduction Reaction Electrocatalyst in an Alkaline Solution

Assemblage of Perovskite LaNiO₃ Connected With In Situ Grown Nitrogen‐Doped Carbon Nanotubes as High‐Performance Electrocatalyst for Oxygen Evolution Reaction

Cobalt‐Doped Perovskite‐Type Oxide LaMnO₃ as Bifunctional Oxygen Catalysts for Hybrid Lithium–Oxygen Batteries

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Oxygen reduction reaction activity of LaMn1-xCoxO3-graphene nanocomposite for zinc-air battery

Cited by 114 publications

References 36 publications

New Phosphorus‐Doped Perovskite Oxide as an Oxygen Reduction Reaction Electrocatalyst in an Alkaline Solution

New Phosphorus‐Doped Perovskite Oxide as an Oxygen Reduction Reaction Electrocatalyst in an Alkaline Solution

Assemblage of Perovskite LaNiO3 Connected With In Situ Grown Nitrogen‐Doped Carbon Nanotubes as High‐Performance Electrocatalyst for Oxygen Evolution Reaction

Cobalt‐Doped Perovskite‐Type Oxide LaMnO3 as Bifunctional Oxygen Catalysts for Hybrid Lithium–Oxygen Batteries

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Assemblage of Perovskite LaNiO₃ Connected With In Situ Grown Nitrogen‐Doped Carbon Nanotubes as High‐Performance Electrocatalyst for Oxygen Evolution Reaction

Cobalt‐Doped Perovskite‐Type Oxide LaMnO₃ as Bifunctional Oxygen Catalysts for Hybrid Lithium–Oxygen Batteries