Enhancing oxygen reduction performance of oxide-CNT through in-situ generated nanoalloy bridging

Li, Fengjiao; Yin, Yu; Zhang, Chen; Li, Wenjian; Maliutina, Kristina; Zhang, Qianling; Wu, Qingyin; He, Chuanxin; Zhang, Yu; Yang, Ming; Fan, Liangdong

doi:10.1016/j.apcatb.2019.118297

Cited by 37 publications

(12 citation statements)

References 53 publications

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“…Further, the biggest difference is that there appears a new fitting peak at 530.7 eV; it can be assigned to the characteristic peak of the O−C bond. 26 This result suggests a good chemical bonding between CNTs and La 0.6 Sr 0.4 TiO 3 . As displayed in Figure 2e Moreover, two characteristic peaks at 133.2 and 133.5 eV are presented for the P 2p spectra (Figure 2f), corresponding to P−C and P−O bonds, 27 respectively.…”

Section: Resultsmentioning

confidence: 88%

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A-Site Doped Perovskite Oxide Strongly Interface Coupling with Carbon Nanotubes as a Promising Bifunctional Electrocatalyst for Solid-State Zn–Air Batteries

Zeng

Liu

et al. 2021

Energy Fuels

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Constructing an effective and stable oxygen reduction reaction/oxygen evolution reaction electrocatalyst for solid-state Zn–air batteries is essential but remains challenging. In this work, carbon nanotubes were in situ grown on the surface of Sr, P-codoped LaTiO3 perovskite oxide (La0.6Sr0.4TiO3-P@CNTs) through a convenient chemical vapor deposition method. Benefiting from the A-site substitution and interfacial modification engineering, the as-prepared La0.6Sr0.4TiO3-P@CNTs show promising oxygen bifunctional electrocatalytic performance. As a result, the assembled solid-state Zn–air battery demonstrates an excellent open-circuit voltage (1.469 V) and a long-term cycling stability (over 186 cycles), which is superior to that of the Pt/C–IrO2 couple.

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Section: Resultsmentioning

confidence: 88%

“…However, the peaks show a positive shift for La 0.6 Sr 0.4 TiO 3 -P@CNTs. Further, the biggest difference is that there appears a new fitting peak at 530.7 eV; it can be assigned to the characteristic peak of the O–C bond . This result suggests a good chemical bonding between CNTs and La 0.6 Sr 0.4 TiO 3 .…”

Section: Results and Discussionmentioning

confidence: 93%

A-Site Doped Perovskite Oxide Strongly Interface Coupling with Carbon Nanotubes as a Promising Bifunctional Electrocatalyst for Solid-State Zn–Air Batteries

Zeng

Liu

et al. 2021

Energy Fuels

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“…We should mention that, to compare the intrinsic activity of these compositions, the perovskite powder is not mixed with carbon. Though the perovskite/carbon composite may generate high activity, ,− the intrinsic activity trend may be greatly influenced by the introduction of carbon. Figure b shows typical polarization curves of LaNi x Mn 1– x O 3 electrodes by LSV at 5 mV s –1 and 1600 rpm in the OER region.…”

Section: Results and Discussionmentioning

confidence: 99%

Compositional and Morphology Optimization to Boost the Bifunctionality of Perovskite Oxygen Electrocatalysts

Xie

Wang

Chen

et al. 2022

ACS Appl. Energy Mater.

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Oxygen electrocatalysts are crucial for the development of renewable and sustainable energy conversion/storage (ECS) systems, but a shortage of efficient and low-cost oxygen electrocatalysts is impeding their widespread applications. In this work, to investigate the bifunctionality of the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER), Ni-substituted LaMnO3 perovskite oxides (LaNi x Mn1–x O3, x = 0.1, 0.3, 0.5, 0.7, and 0.9) and pristine LaNiO3 and LaMnO3 were synthesized using a sol–gel process. After the compositional optimization and electrochemical characterizations, we identified that LaNi0.3Mn0.7O3 (SG LNM-3) within the compositions exhibited balanced intrinsic activity for bifunctional ORR and OER. To further improve the apparent activity of the optimized SG LNM-3, electrospinning was used to prepare one-dimensional nanostructured LaNi0.3Mn0.7O3 (ES LNM-3). ES LNM-3 had a higher specific surface area and continuous electron-transfer pathways, resulting in much improved bifunctional activity in comparison to SG LNM-3. In addition to the morphological effect, we ascribed the high electrochemical performance of ES LNM-3 to the high-spin Mn3+ and low-spin Ni3+ with electron configurations of t2g 3eg 1 and t2g 6eg 1 (a well-recognized design descriptor), as well as the high degree of Jahn–Teller distortion. After assembling ES LNM-3 within Zn–air batteries, promising electrochemical performances such as high power density and rate capability were obtained. Our findings will advance the development of high-performance and inexpensive oxygen electrocatalysts and associated ECS devices.

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“…[11] For the metal-air batteries, no matter what kind of the anode material is the cathodic oxygen reduction reaction (ORR) is essential for the electrochemical processes, and the electrocatalyst performance of the cathode material dominates the comprehensive performance and discharge efficiency of the related battery devices. [12,13] Since the metal-air batteries were proposed in 1878, scholars have never stopped the research on their performance improvement. [14,15] In order to use metal-air batteries in daily electronic equipment and largescale grid systems instead of staying in the laboratory stage, many efforts have been made to meet the requirements of safety, long lifetime, high energy density, economic and environmental protection.…”

Section: Introductionmentioning

confidence: 99%

An Overview of Oxygen Reduction Electrocatalysts for Rechargeable Zinc-Air Batteries Enabled by Carbon and Carbon Composites

Zhao¹,

Wei²,

Zhang³

et al. 2021

Eng. Sci.

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The merits, such as high specific capacity, less self-discharge and high storage life, make Zinc (Zn)-air batteries promising to serve as energy storage and conversion equipment to effectively solve the energy crisis and environmental pollution caused by the rapid increasing global energy consumption, especially the use of fossil energy. However, the applications and further deployments of the Zn-air batteries depend on costly noble metal as cathodes and are limited by sluggish electrochemical reaction kinetics. As one of the competitive alternatives to noble metals, carbon-based materials such as metal/carbon, nonmetal atom/carbon, metal oxide/carbon and metal-metal oxide-heteroatom/carbon materials exhibit the advantages of structural diversity, high porosity, excellent volume conversion efficiency and non-toxicity. With the emphases on structural improvement and composition optimization, this article summarizes the advances in the development of oxygen reduction reaction (ORR) electrocatalyst based on various carbon contained composites for Zn-air battery cathodes. Furthermore, the challenges and perspectives of the research directions on the Zn-air battery with carbon contained composites as catalyst are discussed in detail.

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Enhancing oxygen reduction performance of oxide-CNT through in-situ generated nanoalloy bridging

Cited by 37 publications

References 53 publications

A-Site Doped Perovskite Oxide Strongly Interface Coupling with Carbon Nanotubes as a Promising Bifunctional Electrocatalyst for Solid-State Zn–Air Batteries

A-Site Doped Perovskite Oxide Strongly Interface Coupling with Carbon Nanotubes as a Promising Bifunctional Electrocatalyst for Solid-State Zn–Air Batteries

Compositional and Morphology Optimization to Boost the Bifunctionality of Perovskite Oxygen Electrocatalysts

An Overview of Oxygen Reduction Electrocatalysts for Rechargeable Zinc-Air Batteries Enabled by Carbon and Carbon Composites

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