Facile self-template fabrication of hierarchical nickel-cobalt phosphide hollow nanoflowers with enhanced hydrogen generation performance

Liu, Xupo; Deng, Shaofeng; Liu, Peifang; Liang, Jianing; Gong, Mingxing; Lai, Chenglong; Lu, Yun; Zhao, Tonghui; Wang, Deli

doi:10.1016/j.scib.2019.09.014

Cited by 47 publications

(21 citation statements)

References 58 publications

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“…For achieving efficient transition metal based electrocatalysts, the preparation with simple procedure and effective regulation should be concerned significantly, which provides the significant guarantee for tailoring catalytic performances and lowering price. [ 19–22 ] Currently, the widely employed approaches for synthesizing nanostructured catalysts, such as high‐temperature calcination, [ 23–25 ] hydrothermal or solvothermal method, [ 26–28 ] and electro‐deposition, [ 29,30 ] always possess complexed steps, harsh reaction conditions and toxic waste generation and consume large amounts of energy. Specially, some complicated reaction systems with low controllability are difficult to repeatedly produce the similar electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Transforming Damage into Benefit: Corrosion Engineering Enabled Electrocatalysts for Water Splitting

Liu

Gong

Deng

et al. 2020

Adv Funct Materials

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Producing high‐purity hydrogen from water electrocatalysis is essential for the flourishing hydrogen energy economy. It is of critical importance to develop low‐cost yet efficient electrocatalysts to overcome the high activation barriers during water electrocatalysis. Among the various approaches of catalyst preparation, corrosion engineering that employs the autogenous corrosion reactions to achieve electrocatalysts has emerged as a burgeoning strategy over the past few years. Benefiting from the advantages of simple synthesis, effective regulation, easy scale‐up production, and extremely low cost, corrosion engineering converts the harmful corrosion process into the useful catalyst preparation, achieving the goal of “transforming damage into benefit.” Herein, the concept of corrosion engineering, fundamental reaction mechanisms, and affecting factors are firstly introduced. Then, recent progresses on corrosion engineering for fabricating electrocatalysts toward water splitting are summarized and discussed. Specific attentions are devoted to the formation mechanisms, catalytic performances, and structure–activity relations of these catalysts as well as the approaches employed for performance improvements. At last, the current challenges and future exploiting directions are proposed for achieving highly active and durable electrocatalysts. It is envisioned to shed light on the multidisciplinary corrosion engineering that is closely associated with corrosion and material science for energy and environmental applications.

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Section: Introductionmentioning

confidence: 99%

Transforming Damage into Benefit: Corrosion Engineering Enabled Electrocatalysts for Water Splitting

Liu

Gong

Deng

et al. 2020

Adv Funct Materials

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“…The phase structures of the products were studied via X-ray diffraction (XRD) analysis. Figure S2 performs the XRD results for the MCG precursor, where the sharp peak at around 11° is characteristic for metal alkoxide. , In the XRD pattern of MCO (Figure a), three broad peaks located at 36.5, 42.4, and 61.5° are indexed to the CoO phase (JCPDS no. 43-1004), while no peaks can be detected for the Mn-based phase, which may be owing to the less content as compared with the Co element.…”

Section: Resultsmentioning

confidence: 99%

Flower-like Mn/Co Glycerolate-Derived α-MnS/Co₉S₈/Carbon Heterostructures for High-Performance Lithium-Ion Batteries

Zhu

Lü

Xiao

et al. 2020

ACS Appl. Energy Mater.

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Transition-metal oxides/sulfides have been widely applied for energy storage because of their high-theoretical capacity and natural abundance with low prices, but they suffer from the volume change-induced pulverization problem during cycling. Herein, we present the successful fabrication of heterostructured α-MnS/Co 9 S 8 with simultaneous carbon hybridization through the chemical vapor deposition method, using the pre-synthesized flower-like Mn/Co-glycerate by the solvothermal method as a Mn/Co source and the thiophene as a C/S source. When applied as a lithium storage anode, the α-MnS/Co 9 S 8 /C electrode displays satisfactory electrochemical performances, exhibiting a high reversible capacity of 608 mA h g −1 at 500 mA g −1 upon 300 cycles with 73% capacity retention and a high rate capacity of 422 mA h g −1 at 1000 mA g −1 , which is much better than that for the Mn/Co-glycerate-derived MnCo 2 O x counterpart. Benefiting from the stepwise lithium storage behaviors of α-MnS and Co 9 S 8 and the carbon wrapping, the α-MnS/Co 9 S 8 /C heterostructures effectively suppress the electrode pulverization, which finally contributes to the enhanced lithium storage performance.

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“…Figure 2 a,b are FESEM images of NFO-YS and NFO-S, both having similar morphology and the same average diameter of 650 nm. The surfaces of NFO-YS and NFO-S nanospheres are relatively rough ( Figure 2 d,e) because NiFe-glycerate nanospheres underwent a hydrolysis reaction to form hydroxide nanosheets in the solvent [ 47 ]. Figure 2 c,f show FESEM images of NFO-YS@C nanospheres with different magnifications.…”

Section: Resultsmentioning

confidence: 99%

Preparations of NiFe2O4 Yolk-Shell@C Nanospheres and Their Performances as Anode Materials for Lithium-Ion Batteries

et al. 2020

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At present, lithium-ion batteries (LIBs) have received widespread attention as substantial energy storage devices; thus, their electrochemical performances must be continuously researched and improved. In this paper, we demonstrate a simple self-template solvothermal method combined with annealing for the synthesis of NiFe2O4 yolk-shell (NFO-YS) and NiFe2O4 solid (NFO-S) nanospheres by controlling the heating rate and coating them with a carbon layer on the surface via high-temperature carbonization of resorcinol and formaldehyde resin. Among them, NFO-YS@C has an obvious yolk-shell structure, with a core-shell spacing of about 60 nm, and the thicknesses of the NiFe2O4 shell and carbon shell are approximately 15 and 30 nm, respectively. The yolk-shell structure can alleviate volume changes and shorten the ion/electron diffusion path, while the carbon shell can improve conductivity. Therefore, NFO-YS@C nanospheres as the anode materials of LIBs show a high initial capacity of 1087.1 mA h g−1 at 100 mA g−1, and the capacity of NFO-YS@C nanospheres impressively remains at 1023.5 mA h g−1 after 200 cycles at 200 mA g−1. The electrochemical performance of NFO-YS@C is significantly beyond NFO-S@C, which proves that the carbon coating and yolk-shell structure have good stability and excellent electron transport ability.

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Facile self-template fabrication of hierarchical nickel-cobalt phosphide hollow nanoflowers with enhanced hydrogen generation performance

Cited by 47 publications

References 58 publications

Transforming Damage into Benefit: Corrosion Engineering Enabled Electrocatalysts for Water Splitting

Transforming Damage into Benefit: Corrosion Engineering Enabled Electrocatalysts for Water Splitting

Flower-like Mn/Co Glycerolate-Derived α-MnS/Co₉S₈/Carbon Heterostructures for High-Performance Lithium-Ion Batteries

Preparations of NiFe2O4 Yolk-Shell@C Nanospheres and Their Performances as Anode Materials for Lithium-Ion Batteries

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Facile self-template fabrication of hierarchical nickel-cobalt phosphide hollow nanoflowers with enhanced hydrogen generation performance

Cited by 47 publications

References 58 publications

Transforming Damage into Benefit: Corrosion Engineering Enabled Electrocatalysts for Water Splitting

Transforming Damage into Benefit: Corrosion Engineering Enabled Electrocatalysts for Water Splitting

Flower-like Mn/Co Glycerolate-Derived α-MnS/Co9S8/Carbon Heterostructures for High-Performance Lithium-Ion Batteries

Preparations of NiFe2O4 Yolk-Shell@C Nanospheres and Their Performances as Anode Materials for Lithium-Ion Batteries

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Product

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Flower-like Mn/Co Glycerolate-Derived α-MnS/Co₉S₈/Carbon Heterostructures for High-Performance Lithium-Ion Batteries