3D hierarchical Ni(PO<sub>3</sub>)<sub>2</sub>nanosheet arrays with superior electrochemical capacitance behavior

Li, Qiao; Chen, Chongyi; Zheng, Jinju; Wang, Lin; Yang, Zuobao; Yang, Weiyou

doi:10.1039/c6ta09528c

Cited by 53 publications

(34 citation statements)

References 35 publications

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“…[29,30] Furthermore, high resolution O 1s spectrum (Figure S7, Supporting Information) has been also obtained and the related peaks at 531.7 and 533.5 eV can be assigned to PO and POFe bonds in iron phosphate (Fe(PO 3 ) 2 ). [32,33] These results also confirmed that the FeP bond in the Fe-P@NCPs contains iron phosphide and iron phosphate. For the Fe 2p spectrum of Fe-NCPs, it showed two peaks at ≈710.3 and 723.1 eV assigned to the FeN [28] configurations.…”

Section: Resultssupporting

confidence: 66%

Nitrogen‐Doped Carbon Polyhedrons Confined Fe–P Nanocrystals as High‐Efficiency Bifunctional Catalysts for Aqueous Zn−CO₂ Batteries

Liu

Wang

Yang

et al. 2022

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Emerging Fe bonded with heteroatom P in carbon matrix (FePC) holds great promise for electrochemical catalysis, but the design of highly active and cost‐efficient FePC structure for the electrocatalytic CO2 reduction reaction (CO2RR) and aqueous ZnCO2 batteries (ZCBs) is still challenging. Herein, polyhedron‐shaped bifunctional electrocatalysts, FeP nanocrystals anchored in N‐doped carbon polyhedrons (Fe‐P@NCPs), toward a reversible aqueous ZnCO2 battery, are reported. The Fe‐P@NCPs are synthesized through a facile strategy by using self‐templated zeolitic imidazolate frameworks (ZIFs), followed by an in situ high‐temperature calcination. The resultant catalysts exhibit aqueous CO2RR activity with a CO Faradaic efficiency up to 95% at −0.55 V versus reversible hydrogen electrode (RHE), comparable to the previously best‐reported values of FeNC structure. The as‐constructed ZCBs with designed Fe‐P@NCPs cathode, show the peak power density of 0.85 mW cm−2 and energy density of 231.8 Wh kg−1 with a cycling durability over 500 cycles, and outstanding stability in terms of discharge voltage for 7 days. The high selectivity and efficiency of the battery are attributed to the presence of highly catalytic FeP nanocrystals in N‐doped carbon matrix, which can effectively increase the number of catalytically active sites and interfacial charge–transfer conductivity, thereby improving the CO2RR activity.

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Section: Resultssupporting

confidence: 66%

Nitrogen‐Doped Carbon Polyhedrons Confined Fe–P Nanocrystals as High‐Efficiency Bifunctional Catalysts for Aqueous Zn−CO₂ Batteries

Liu

Wang

Yang

et al. 2022

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“…For comparing the specific activity of the corrugated β‐Ni(OH) 2 (i.e., the 0.7–9 electrode) versus the regular β‐Ni(OH) 2 and α‐Ni(OH) 2 , monocrystalline β‐Ni(OH) 2 and polycrystalline α‐Ni(OH) 2 nanosheets were also prepared based on previous literature. [ 33,34 ] It should be noted that all of these materials were vertically grown onto the CFP and used as the working electrode (mass loading of corrugated β‐Ni(OH) 2 : 3.34 mg cm –2 , regular β‐Ni(OH) 2 : 2.04 mg cm –2 , regular α‐Ni(OH) 2 : 2.02 mg cm –2 ). As shown in Figure S10, Supporting Information, the morphology of both the regular β‐Ni(OH) 2 and α‐Ni(OH) 2 are flat nanosheets without any obvious morphological curvatures.…”

Section: Figurementioning

confidence: 99%

Operando Tailoring of Defects and Strains in Corrugated β‐Ni(OH)₂ Nanosheets for Stable and High‐Rate Energy Storage

Sharma

et al. 2020

Advanced Materials

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Nickel hydroxide represents a technologically important material for energy storage, such as hybrid supercapacitors. It has two different crystallographic polymorphs, α‐ and β‐Ni(OH)2, showing advantages in either theoretical capacity or cycling/rate performance, manifesting a trade‐off trend that needs to be optimized for practical applications. Here, the synergistic superiorities in both activity and stability of corrugated β‐Ni(OH)2 nanosheets are demonstrated through an electrochemical abuse approach. With ≈91% capacity retention after 10 000 cycles, the corrugated β‐Ni(OH)2 nanosheets can deliver a gravimetric capacity of 457 C g−1 at a high current density of 30 A g−1, which is nearly two and four times that of the regular α‐ and β‐Ni(OH)2, respectively. Operando spectroscopy and finite element analysis reveal that greatly enhanced chemical activity and structural robustness can be attributed to the in situ tailored lattice defects and the strain‐induced highly curved micromorphology. This work demonstrates a multi‐scale defect‐and‐strain co‐design strategy, which is helpful for rational design and tuned fabrication of next‐generation electrode materials for stable and high‐rate energy storage.

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“…20 The self-supported Ni(PO 3 ) 2 electrode with outstanding capacitive behavior was also reported. 21 However, the synthesis of metaphosphate generally needs a long reaction time, the addition of coordinating reagents/surfactants, or the preparation of complex precursors. 20 Moreover, relevant research related to the sodium/potassium ion storage performance of metaphosphate has never been reported.…”

Section: ■ Introductionmentioning

confidence: 99%

Selective Interface Synthesis of Cobalt Metaphosphate Nanosheet Arrays Motivated by Functionalized Carbon Cloths for Fast and Durable Na/K-Ion Storage

Zeng

et al. 2021

ACS Appl. Mater. Interfaces

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Exploiting novel nanomaterials with fast and durable sodium/potassium ion storage capability is key to alleviate the application limitations of lithium-ion batteries. Herein, a novel energy storage material based on cobalt metaphosphate nanosheet arrays self-supported on carbon cloths [Co(PO 3 ) 2 NSs/CC] is fabricated by a two-step strategy. This rationally designed strategy avoids the preparation of the complex {Co[O 2 P(O t Bu) 2 ] 2 } n precursor, which significantly simplifies the synthesis process. The active CC acts not only as an electrically conductive substrate as usual but also as a functional basis to suppress PH 3 -involved reaction and to promote HPO 3 -involved reaction during the phosphating process, contributing to the formation of Co(PO 3 ) 2 . The mutual cross-linked porous Co(PO 3 ) 2 nanosheets vertically grow on the surface of activated CC, ensuring sufficient electrolyte infiltration and fast electron transport among the electrodes. Sodium ion storage analysis for the Co(PO 3 ) 2 NSs/CC electrode reveals a multi-step reaction mechanism with high reversibility, as reflected by the high reversible capacity (667 mA h g −1 at 50 mA g −1 ) and excellent cyclability (with almost no capacity decay over 500 cycles). This novel electrode is also well capable of storing potassium ions, exhibiting high reversible capacity, which outperforms most reported anodes for potassium-ion batteries. The development of this novel high-performance nanomaterial would advance the performance of sodium/potassium-ion batteries toward practical applications.

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3D hierarchical Ni(PO₃)₂nanosheet arrays with superior electrochemical capacitance behavior

Abstract: 3D hierarchical Ni(PO3)2nanosheet arrays are developed as a novel electrode material with superior energy storage behavior.

Cited by 53 publications

References 35 publications

Nitrogen‐Doped Carbon Polyhedrons Confined Fe–P Nanocrystals as High‐Efficiency Bifunctional Catalysts for Aqueous Zn−CO₂ Batteries

Nitrogen‐Doped Carbon Polyhedrons Confined Fe–P Nanocrystals as High‐Efficiency Bifunctional Catalysts for Aqueous Zn−CO₂ Batteries

Operando Tailoring of Defects and Strains in Corrugated β‐Ni(OH)₂ Nanosheets for Stable and High‐Rate Energy Storage

Selective Interface Synthesis of Cobalt Metaphosphate Nanosheet Arrays Motivated by Functionalized Carbon Cloths for Fast and Durable Na/K-Ion Storage

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3D hierarchical Ni(PO3)2nanosheet arrays with superior electrochemical capacitance behavior

Abstract: 3D hierarchical Ni(PO3)2nanosheet arrays are developed as a novel electrode material with superior energy storage behavior.

Cited by 53 publications

References 35 publications

Nitrogen‐Doped Carbon Polyhedrons Confined Fe–P Nanocrystals as High‐Efficiency Bifunctional Catalysts for Aqueous Zn−CO2 Batteries

Nitrogen‐Doped Carbon Polyhedrons Confined Fe–P Nanocrystals as High‐Efficiency Bifunctional Catalysts for Aqueous Zn−CO2 Batteries

Operando Tailoring of Defects and Strains in Corrugated β‐Ni(OH)2 Nanosheets for Stable and High‐Rate Energy Storage

Selective Interface Synthesis of Cobalt Metaphosphate Nanosheet Arrays Motivated by Functionalized Carbon Cloths for Fast and Durable Na/K-Ion Storage

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3D hierarchical Ni(PO₃)₂nanosheet arrays with superior electrochemical capacitance behavior

Nitrogen‐Doped Carbon Polyhedrons Confined Fe–P Nanocrystals as High‐Efficiency Bifunctional Catalysts for Aqueous Zn−CO₂ Batteries

Nitrogen‐Doped Carbon Polyhedrons Confined Fe–P Nanocrystals as High‐Efficiency Bifunctional Catalysts for Aqueous Zn−CO₂ Batteries

Operando Tailoring of Defects and Strains in Corrugated β‐Ni(OH)₂ Nanosheets for Stable and High‐Rate Energy Storage