Interfacial redox reaction-directed synthesis of silver@cerium oxide core–shell nanocomposites as catalysts for rechargeable lithium–air batteries

Liu, Ying; Wang, Man; Cao, Lujie; Yang, Ming-Yang; Cheng, Samson Ho‐Sum; Cao, Chenwei; Leung, Kwan-Lan; Chung, C.Y.; Lu, Zhouguang

doi:10.1016/j.jpowsour.2015.03.147

Cited by 31 publications

(14 citation statements)

References 50 publications

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“…In addition, considering the strong reduction ability of cerium(III), Ce(OH) 3 as one of the precipitates used in coprecipitation synthesis may be further employed in interfacial redox reactions with M(OH) x that are typical oxidants to form a hetero‐nanostructure . Till now, several heterogeneous nanocomposite catalysts based on interfacial oxidation‐reduction reactions have been fabricated through coprecipitation method such as Pd@CeO 2 and Cu 2 O@CeO 2 core‐shell structured nanospheres, pomegranate‐like Ag@CeO 2 and Pt@CeO 2 multicore@shell structured nanocomposites.…”

Section: Tuning the Composition Of Ceria‐based Composite Nanocatalystsmentioning

confidence: 99%

“…a−b) TEM, c−d) HRTEM and e) STEM images and the corresponding Ce, O, and Ag elemental mapping, and f) the EDS of the multicoreshell structured Ag@CeO 2 nanocomposites. g) Schematic illustration of the formation of multicoreshell structured Ag@CeO 2 nanocomposites Reproduced with permission . Copyright 2015, Elsevier.…”

Section: Tuning the Composition Of Ceria‐based Composite Nanocatalystsmentioning

confidence: 99%

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Recent Progress in Well‐Controlled Synthesis of Ceria‐Based Nanocatalysts towards Enhanced Catalytic Performance

Sun

Yan

2016

Advanced Energy Materials

148

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The unique electronic configuration and structural properties of ceria make ceria‐based nanomaterials such as morphology‐dependent ceria nanocrystals, rare earth‐doped ceria‐zirconia solid solutions and noble metal‐ceria nanocomposites effective promoters in three‐way catalysts for low‐temperature water‐gas‐shift reaction, preferential oxidation of traces of CO, the treatment of toxic auto‐mobile exhaust, etc. The activities of nanoceria catalysts can be determined by their morphologies, oxygen vacancies, interfacial structures and the type of exposed crystal surfaces, as well as the synergistic effect exhibited by nanocomposites. In this review, the state‐of‐the‐art developments in the well‐controlled synthesis of ceria‐based nanocatalysts and their applications in both environmental and energy fields is summarized. The involved reaction mechanisms are also briefly introduced, and eventually an outlook in the design of novel nanoceria catalysts for valuable energy applications is addressed.

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Section: Tuning the Composition Of Ceria‐based Composite Nanocatalystsmentioning

confidence: 99%

Section: Tuning the Composition Of Ceria‐based Composite Nanocatalystsmentioning

confidence: 99%

Recent Progress in Well‐Controlled Synthesis of Ceria‐Based Nanocatalysts towards Enhanced Catalytic Performance

Sun

Yan

2016

Advanced Energy Materials

148

View full text Add to dashboard Cite

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“…[53,[101][102][103][104][105][106][107][108][109][110][111][112][113] However, these results have shown that it is impossible to maximize the electrochemical performance of a Li-O 2 battery without distinguishing the role of each catalyst for the ORR or OER. [53,[101][102][103][104][105][106][107][108][109][110][111][112][113] However, these results have shown that it is impossible to maximize the electrochemical performance of a Li-O 2 battery without distinguishing the role of each catalyst for the ORR or OER.…”

Section: Au-mos 2 Au-nico 2 O 4 Pd-co 3 O 4 Pd-mno 2 Pd-zno Andmentioning

confidence: 99%

High‐Energy‐Density Metal–Oxygen Batteries: Lithium–Oxygen Batteries vs Sodium–Oxygen Batteries

et al. 2017

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The development of next-generation energy-storage devices with high power, high energy density, and safety is critical for the success of large-scale energy-storage systems (ESSs), such as electric vehicles. Rechargeable sodium-oxygen (Na-O ) batteries offer a new and promising opportunity for low-cost, high-energy-density, and relatively efficient electrochemical systems. Although the specific energy density of the Na-O battery is lower than that of the lithium-oxygen (Li-O ) battery, the abundance and low cost of sodium resources offer major advantages for its practical application in the near future. However, little has so far been reported regarding the cell chemistry, to explain the rate-limiting parameters and the corresponding low round-trip efficiency and cycle degradation. Consequently, an elucidation of the reaction mechanism is needed for both lithium-oxygen and sodium-oxygen cells. An in-depth understanding of the differences and similarities between Li-O and Na-O battery systems, in terms of thermodynamics and a structural viewpoint, will be meaningful to promote the development of advanced metal-oxygen batteries. State-of-the-art battery design principles for high-energy-density lithium-oxygen and sodium-oxygen batteries are thus reviewed in depth here. Major drawbacks, reaction mechanisms, and recent strategies to improve performance are also summarized.

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“…The major difficulty lies in the intrinsic catalytic activity, active sites and the poor mass transport of the potential materials [16]. Current approaches to improving such materials include the tuning of active sites and the construction of nanostructures [17][18][19]. Therefore, despite some progress, the development of alternatives to Pt-based materials as ORR catalysts remains a huge challenge.…”

Section: Introductionmentioning

confidence: 99%

Bimetallic organic frameworks derived CuNi/carbon nanocomposites as efficient electrocatalysts for oxygen reduction reaction

et al. 2017

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Catalysts of oxygen reduction reaction (ORR)play key roles in renewable energy technologies such as metal-air batteries and fuel cells. Despite tremendous efforts, highly active catalysts with low cost remain elusive. This work used metal-organic frameworks to synthesize non-precious bimetallic carbon nanocomposites as efficient ORR catalysts. Although carbon-based Cu and Ni are good candidates, the hybrid nanocomposites take advantage of both metals to improve catalytic activity. The resulting molar ratio of Cu/Ni in the nanocomposites can be finely controlled by tuning the recipe of the precursors. Nanocomposites with a series of molar ratios were produced, and they exhibited much better ORR catalytic performance than their monometallic counterparts in terms of limited current density, onset potential and half-wave potential. In addition, their extraordinary stability in alkaline is superior to that of commercially-available Pt-based materials, which adds to the appeal of the bimetallic carbon nanocomposites as ORR catalysts. Their improved performance can be attributed to the synergetic effects of Cu and Ni, and the enhancement of the carbon matrix.

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Interfacial redox reaction-directed synthesis of silver@cerium oxide core–shell nanocomposites as catalysts for rechargeable lithium–air batteries

Cited by 31 publications

References 50 publications

Recent Progress in Well‐Controlled Synthesis of Ceria‐Based Nanocatalysts towards Enhanced Catalytic Performance

Recent Progress in Well‐Controlled Synthesis of Ceria‐Based Nanocatalysts towards Enhanced Catalytic Performance

High‐Energy‐Density Metal–Oxygen Batteries: Lithium–Oxygen Batteries vs Sodium–Oxygen Batteries

Bimetallic organic frameworks derived CuNi/carbon nanocomposites as efficient electrocatalysts for oxygen reduction reaction

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