Carbon hybrid with 3D nano-forest architecture in-situ catalytically constructed by CoFe alloy as advanced multifunctional electrocatalysts for Zn-air batteries-driven water splitting

Wang, Shuguang; Wang, Jie; Wang, Xin; Li, Long; Qin, Jinwen; Cao, Minhua

doi:10.1016/j.jechem.2020.07.045

Cited by 47 publications

(25 citation statements)

References 55 publications

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“…After nickel doping, the I D /I G ratios decreased, indicating the conversion of the disordered carbon structure into the ordered graphitic crystal structure. Therefore, the graphitization degree of PCNF−Ni is significantly higher than that of CNF [67–70] . The high graphitization property will facilitate the transport of electrons and also the uniform deposition of lithium.…”

Section: Resultsmentioning

confidence: 99%

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Nitrogen‐doped Porous Carbon Nanofibers Decorated with Nickel Nanoparticles for Unlocking Low‐cost Structural Lithium Metal Anodes

Chen

et al. 2022

ChemistrySelect

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Lithium metal anode has received increasing attention. However, safety issues arising from lithium dendrite growth have limited the commercialization of lithium metal anodes. Herein, a porous carbon nanofiber framework decorated with nickel nanoparticles was designed as a 3D conductive host by simple electrospinning technique to solve the above problem. Uniformly dispersed nickel nanoparticles on N-doped carbon fibers can expose more active sites to trap lithium ions. The design of the Ni/N co-doping structure can effectively improve its lithiophilicity. In addition, the 3D porous conductive structure facilitates electron transport and can effectively decrease the local current density to suppress the formation and generation of lithium dendrites. The combined results of experiments and density functional theory calculations show that carbon nanofibers decorated with Ni nanoparticles have stronger adsorption ability for lithium, thus resulting in more uniform plating. This work provides inspiration for designing low-cost and dendrite-free structural lithium metal anode hosts.

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Section: Resultsmentioning

confidence: 99%

“…Therefore, the graphitization degree of PCNFÀ Ni is significantly higher than that of CNF. [67][68][69][70] The high graphitization property will facilitate the transport of electrons and also the uniform deposition of lithium.…”

Section: Chemistryselectmentioning

confidence: 99%

Nitrogen‐doped Porous Carbon Nanofibers Decorated with Nickel Nanoparticles for Unlocking Low‐cost Structural Lithium Metal Anodes

Chen

et al. 2022

ChemistrySelect

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“…In XRD patterns (Figure 2d), two broad diffraction peaks at 25.2 and 43.4° can be assigned to (002) and (100) crystal faces of carbon. [ 36,37 ] No crystalline peaks, belonging to metallic Ni or Ni‐based compound, can be observed. To further confirm the chemical state of Ni atoms in Ni‐ASCs/4.3 wt.% and Ni‐ASCs/0.8 wt.%, Ni K‐edge X‐ray absorption near‐edge structure (XANES) technique was carried out.…”

Section: Resultsmentioning

confidence: 99%

“…In XRD patterns (Figure 2d), two broad diffraction peaks at 25.2 and 43.4° can be assigned to (002) and (100) crystal faces of carbon. [36,37] S1 (Supporting Information), each Ni atom is bonded with three N atoms (NiN 3 ). The aforementioned results verify the successful preparation of atomically accurate NiN 3 sites on 3D porous carbon substrate.…”

Section: Resultsmentioning

confidence: 99%

Industrial‐Level CO₂Electroreduction Using Solid‐Electrolyte Devices Enabled by High‐Loading Nickel Atomic Site Catalysts

Wang

Qian

Huang

et al. 2022

Advanced Energy Materials

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to reduce greenhouse gas and store renewable electricity in the form of chemical bonds. [1,2] During CO 2 RR process, a variety of products (such as carbon monoxide, formic acid, methane, methanol, ethylene, ethanol, n-propanol, etc) can be obtained through different reaction pathways depending on the electrode catalysts used. [3,4] Among these products, CO is a significant C1-building block required for various practical industrial routes, such as methanol synthesis, Fischer-Tropsch reactor and hydroformylation reaction. [4][5][6] More importantly, CO 2 RR to CO is regarded as one of the most promising routes for the chemical industry, owing to its high selectivity and spontaneous separation from electrolyte. Currently, different catalysts, such as metals and their alloys, molecular catalysts, carbon materials and metal atomic site materials, have been developed to promote the conversion of CO 2 to CO. [7][8][9][10][11][12][13][14][15] Among them, the atomic site catalysts (ASCs), especially N-doped carbon supported Ni-based ASCs (Ni-ASCs), are of more interest because of their high selectivity toward CO 2 RR to CO, tunable electronic structure, and low cost. [16][17][18][19][20][21][22] Although great progress has been achieved in making Ni-ASCs, the reported Ni atomic site catalysts usually show the limited current density at the level of Transition-metal atomic site catalysts (ASCs) are a new class of catalytic system for CO 2 electroreduction, however, their practical application is greatly hindered by the challenge that it's still difficult for them to simultaneously achieve industrial-level current density and high selectivity. Herein a new strategy is reported for hundreds of gram-scale and low-cost production of Ni-ASCs on 3D porous nanocarbon with high-loading NiN 3 sites for greatly boosting the electroreduction of CO 2 to CO with both industrial-level current density and high selectivity. It is discovered that although Ni-ASCs with high-loading (Ni-ASCs/4.3 wt.%) and low-loading (Ni-ASCs/0.8 wt.%) both show above 95% Faradic efficiency for CO (FE CO ) under a wide potential range in H-cell, in flow cell, Ni-ASCs/0.8 wt.% can only achieve FE CO of 43.6% at a current density of 343.9 mA cm −2 , significantly lower than those (95.1%, 533.3 mA cm −2 ) of Ni-ASCs/4.3 wt.% under same potential, first revealing the important role of high-loadings of single atom sites in promoting the highselectivity electrolysis at industrial-level current density. Most importantly, it is demonstrated that Ni-ASCs/4.3 wt.%-based membrane electrode assembly (MEA) exhibits outstanding durability at industrial-level current density of 360.0 mA cm −2 , which is one of the best performances for the realistic electroreduction of CO 2 to CO in the reported ASCs-based MEA systems.

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“…Therefore, it can be deduced that FeTiO 3 @C has an excellent conductivity, which is beneficial for the electron transport during the electrochemical process. 43,44 The mass contents of carbon and FeTiO 3 in FeTiO 3 @C can be obtained by thermogravimetric analysis (TGA) as shown in Fig. S7.…”

Section: Resultsmentioning

confidence: 99%

Highly graphited carbon-coated FeTiO₃ nanosheets in situ derived from MXene: an efficient bifunctional catalyst for Zn–air batteries

et al. 2022

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Carbon hybrid with 3D nano-forest architecture in-situ catalytically constructed by CoFe alloy as advanced multifunctional electrocatalysts for Zn-air batteries-driven water splitting

Cited by 47 publications

References 55 publications

Nitrogen‐doped Porous Carbon Nanofibers Decorated with Nickel Nanoparticles for Unlocking Low‐cost Structural Lithium Metal Anodes

Nitrogen‐doped Porous Carbon Nanofibers Decorated with Nickel Nanoparticles for Unlocking Low‐cost Structural Lithium Metal Anodes

Industrial‐Level CO₂Electroreduction Using Solid‐Electrolyte Devices Enabled by High‐Loading Nickel Atomic Site Catalysts

Highly graphited carbon-coated FeTiO₃ nanosheets in situ derived from MXene: an efficient bifunctional catalyst for Zn–air batteries

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Carbon hybrid with 3D nano-forest architecture in-situ catalytically constructed by CoFe alloy as advanced multifunctional electrocatalysts for Zn-air batteries-driven water splitting

Cited by 47 publications

References 55 publications

Nitrogen‐doped Porous Carbon Nanofibers Decorated with Nickel Nanoparticles for Unlocking Low‐cost Structural Lithium Metal Anodes

Nitrogen‐doped Porous Carbon Nanofibers Decorated with Nickel Nanoparticles for Unlocking Low‐cost Structural Lithium Metal Anodes

Industrial‐Level CO2Electroreduction Using Solid‐Electrolyte Devices Enabled by High‐Loading Nickel Atomic Site Catalysts

Highly graphited carbon-coated FeTiO3 nanosheets in situ derived from MXene: an efficient bifunctional catalyst for Zn–air batteries

Contact Info

Product

Resources

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Industrial‐Level CO₂Electroreduction Using Solid‐Electrolyte Devices Enabled by High‐Loading Nickel Atomic Site Catalysts

Highly graphited carbon-coated FeTiO₃ nanosheets in situ derived from MXene: an efficient bifunctional catalyst for Zn–air batteries