Oriented assembly of anisotropic nanoparticles into frame-like superstructures

Nai, Jianwei; Guan, Buyuan; Yu, Le; Lou, Xiong Wen David

doi:10.1126/sciadv.1700732

Cited by 172 publications

(176 citation statements)

References 80 publications

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“…Notably, a typical nanoframe is a single crystal with high quality, as revealed in the SAED image in Figure 3u. The formation mechanism of this type of nanoframe is similar to that of the Co-Fe PBA superstructures presented in the same paper, [70] which is explained in more detail in the following section. The interplanar spacing is around 5.0 Å, which corresponds to the {200} planes, in agreement with the SAED results (Figure 3u).…”

Section: Open Hollow Structuressupporting

confidence: 52%

“…[70] The product is composed of uniform nanoframes with a smooth surface (Figure 3s). Recently, Nai et al successfully explored a novel one-pot approach to fabricate Co-Fe PBA nanoframes.…”

Section: Open Hollow Structuresmentioning

confidence: 99%

Section: Complex Hollow Structuresmentioning

confidence: 99%

“…The guest cations (Li + , Na + ) can be accommodated and diffuse across the nanosized voids of the crossed framework formed by transition metals and cyano ligands. [61][62][63][64][65][66][67][68][69][70] This is because: i) the composition of the final products can be controlled by rationally selecting the components of the PB/PBA templates and deliberately manipulating the chemical transformation processes; ii) functional porous and/or hierarchical nanostructures can be generated in the transformation processes. [58] In experimental measurements, M-Fe II PBAs (Prussian white, M = Fe II and Co II ) can manifest a capacity up to ≈160 mAh g −1 with a current density of 10 mA g −1 in Na-ion storage.…”

Section: Introductionmentioning

confidence: 99%

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Hollow Structures Based on Prussian Blue and Its Analogs for Electrochemical Energy Storage and Conversion

2018

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Due to their special structural characteristics, hollow structures grant fascinating physicochemical properties and widespread applications, especially in electrochemical energy storage and conversion. Recently, the research of Prussian blue (PB) and its analog (PBA) related nanomaterials has emerged and has drawn considerable attention because of their low cost, facile preparation, intrinsic open framework, and tunable composition. Here, the recent progress in the study of PB- and PBA-based hollow structures for electrochemical energy storage and conversion are summarized and discussed. First, some remarkable examples in the synthesis of hollow structures from PB- and PBA-based materials are illustrated in terms of the structural architectures, i.e., closed single-shelled hollow structures, open hollow structures, and complex hollow structures. Thereafter, their applications as potential electrode materials for lithium-/sodium-ion batteries, hybrid supercapacitors, and electrocatalysis are demonstrated. Finally, the current achievements in this field together with the limits and urgent challenges are summarized. Some perspectives on the potential solutions and possible future trends are also provided.

show abstract

Section: Open Hollow Structuressupporting

confidence: 52%

“…[70] The product is composed of uniform nanoframes with a smooth surface (Figure 3s). Recently, Nai et al successfully explored a novel one-pot approach to fabricate Co-Fe PBA nanoframes.…”

Section: Open Hollow Structuresmentioning

confidence: 99%

Section: Complex Hollow Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hollow Structures Based on Prussian Blue and Its Analogs for Electrochemical Energy Storage and Conversion

2018

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“…[34,[36][37][38][39] Compared with the bulk solid counterparts,h ollow configurations with larger surface areas usually endow catalysts with ah igher density of surface-exposed active sites.Moreover,their large void space could effectively reduce ionic transport resistance and the ion diffusion lengths for surface reactions. [34] Very recently,afew pioneering studies have described the successful generation of hollow nanostructured (oxy)hydroxides towards water oxidation with encouraging results.…”

mentioning

confidence: 99%

Hierarchical Hollow Nanoprisms Based on Ultrathin Ni‐Fe Layered Double Hydroxide Nanosheets with Enhanced Electrocatalytic Activity towards Oxygen Evolution

et al. 2017

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The oxygen evolution reaction (OER) is involved in various renewable energy systems,such as water-splitting cells and metal-air batteries.N i-Fel ayered double hydroxides (LDHs) have been reported as promising OER electrocatalysts in alkaline electrolytes.T he rational design of advanced nanostructures for Ni-FeLDHs is highly desirable to optimize their electrocatalytic performance.H erein, we report af acile self-templated strategy for the synthesis of novel hierarchical hollown anoprisms composed of ultrathin Ni-FeL DH nanosheets.T etragonal nanoprisms of nickel precursors were first synthesized as the self-sacrificing template.A fterwards, these Ni precursors were consumed during the hydrolysis of iron(II) sulfate for the simultaneous growth of al ayer of Ni-FeL DH nanosheets on the surface.T he resultant Ni-FeL DH hollow prisms with large surface areas manifest high electrocatalytic activity towards the OER with lowo verpotential, small Tafel slope,and remarkable stability.

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Hollow Multivoid Nanocuboids Derived from Ternary Ni–Co–Fe Prussian Blue Analog for Dual‐Electrocatalysis of Oxygen and Hydrogen Evolution Reactions

Ahn

Park

Lee

et al. 2018

Adv Funct Materials

265

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Hydrogen generation from electrochemical water-splitting is an attractive technology for clean and efficient energy conversion and storage, but it requires efficient and robust non-noble electrocatalysts for hydrogen and oxygen evolution reactions (HER and OER). Nonprecious transition metalorganic frameworks (MOFs) are one of the most promising precursors for developing advanced functional catalysts with high porosity and structural rigidity. Herein, a new transition metal-based hollow multivoid nanocuboidal catalyst synthesized from a ternary Ni-Co-Fe (NCF)-MOF precursor is rationally designed to produce dual-functionality toward OER and HER. Differing ion exchanging rates of the ternary transition metals within the prussian blue analog MOF precursor are exploited to produce interconnected internal voids, heteroatom doping, and a favorably tuned electronic structure. This design strategy significantly increases active surface area and pathways for mass transport, resulting in excellent electroactivities toward OER and HER, which are competitive with recently reported single-function nonprecious catalysts. Moreover, outstanding electrochemical durability is realized due to the unique rigid and interconnected porous structure which considerably retains initial rapid charge transfer and mass transport of active species. The MOF-based material design strategy demonstrated here exemplifies a novel and versatile approach to developing non-noble electrocatalysts with high activity and durability for advanced electrochemical water-splitting systems.

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Oriented assembly of anisotropic nanoparticles into frame-like superstructures

Abstract: Cubic frame–like superstructures are constructed via the assembly of nanocuboids on the edges of preformed nanocubes.

Cited by 172 publications

References 80 publications

Hollow Structures Based on Prussian Blue and Its Analogs for Electrochemical Energy Storage and Conversion

Hollow Structures Based on Prussian Blue and Its Analogs for Electrochemical Energy Storage and Conversion

Hierarchical Hollow Nanoprisms Based on Ultrathin Ni‐Fe Layered Double Hydroxide Nanosheets with Enhanced Electrocatalytic Activity towards Oxygen Evolution

Hollow Multivoid Nanocuboids Derived from Ternary Ni–Co–Fe Prussian Blue Analog for Dual‐Electrocatalysis of Oxygen and Hydrogen Evolution Reactions

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