An altered nanoemulsion assembly strategy for in-situ synthesis of Co2P/NP-C nanospheres as advanced oxygen reduction electrocatalyst for zinc-air batteries

Shi, Jing; Guo, Xingmei; Liu, Shanjing; Sun, Yanxiao; Zhang, Junhao; Liu, Yuanjun; Zheng, Xiangjun; Kong, Qinghong

doi:10.1016/j.compositesb.2021.109589

Cited by 46 publications

(12 citation statements)

References 47 publications

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“…30 The remaining Raman peaks at 179.9, 452.1, 485.9 and 647. 32 The Se 3d spectrum in Fig. 5d shows that two peaks at 55.6 and 59.2 eV correspond to Se 3d 5/2 and Se 3d 3/2 , respectively.…”

Section: Resultsmentioning

confidence: 94%

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Growing Co–Ni–Se nanosheets on 3D carbon frameworks as advanced dual functional electrodes for supercapacitors and sodium ion batteries

Gao

Xue

Zhang

et al. 2022

Inorg. Chem. Front.

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Section: Resultsmentioning

confidence: 94%

“…The peaks at 796.8 and 780.6 eV refer to the Co 2p 1/2 and Co 2p 3/2 signals of Co 3+ . 32 The Se 3d spectrum in Fig. 5d shows that two peaks at 55.6 and 59.2 eV correspond to Se 3d 5/2 and Se 3d 3/2 , respectively.…”

Section: Resultsmentioning

confidence: 94%

Growing Co–Ni–Se nanosheets on 3D carbon frameworks as advanced dual functional electrodes for supercapacitors and sodium ion batteries

Gao

Xue

Zhang

et al. 2022

Inorg. Chem. Front.

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“…Transition metals do not exhibit fixed catalytic activities; hence, their adsorption behaviors, ambient chemical properties and oxidation states can change with the local geometry of the active site. Thus, the active sites can be designed to regulate the free energy of *OOH and *OH and then improve the catalytic properties of the two catalysts [ 38 , 39 ]. The theoretical model consists of four nitrogen atoms and a late transition metal, and the Gibbs free energy at each step is represented as follows:

…”

Section: Classification Of Bifunctional Orr/oer Catalystsmentioning

confidence: 99%

Research Progress of Bifunctional Oxygen Reactive Electrocatalysts for Zinc–Air Batteries

et al. 2022

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Zinc–air batteries (ZABs) have several advantages, including high energy density, cheap price and stable performances with good application prospects in the field of power batteries. The charging and discharging reactions for the air cathode of ZABs are the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), respectively, which play an important role in the whole performance of ZAB. Due to the cost and limited reserves of highly active precious metal catalysts, it is crucial to design alternative efficient and stable dual-functional non-precious metal catalysts. In the present review, we present a systematic summary of the recent progress in the use of transition metal-based electrocatalysts as alternatives to precious metals for the positive poles of ZAB air. Combined with state-of-the-art in situ characterization technologies, a deep understanding of the catalytic mechanism of OER/ORR provided unique insights into the precise design of excellent synthetic non-precious metal catalysts from the perspective of atomic structure. This review further shows that the hybrid electric battery is a new strategy to improve the efficiency of the hybrid electric battery, which could be available to alleviate the problem of resource shortage. Finally, the challenges and research trends for the future development of ZABs were clearly proposed.

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“…As the ORR occurs at the contact surface between the catalyst and the electrolyte, the exposure of the catalytic site directly affects the catalytic efficacy of the catalyst; therefore, an effective morphological structure of the carbon-based material is essential. Among the many carbon-based materials, carbon nanosheets, − carbon nanospheres, − and carbon nanotubes − have been extensively studied in a variety of morphological structures. In particular, carbon nanospheres with a hollow structure have received extensive attention over the years, which are typically porous nanomaterials with immense specific surface area and porosity and also have excellent electron delivering efficiency, chemical stability, and thermal stability. , Heteroatom particles are trapped within a permeable, solid N-doped carbon shell, creating nanoscale gaps between the carbon shell and the heteroatoms to induce the formation of localized high transient concentrations for driving rapid multiphase catalysis .…”

Section: Introductionmentioning

confidence: 99%

Nitrogen/Phosphorus/Boron-Codoped Hollow Carbon Spheres as Highly Efficient Electrocatalysts for Zn–Air Batteries

Wang

Chen

Fang

et al. 2022

Ind. Eng. Chem. Res.

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Considering the shortage of platinum resources and its high price, it is crucial to explore its substitutes to satisfy the market demand of metal−air batteries. Thence, N/P/B-codoped hollow carbon nanospheres were synthesized by doping B and P into polydopamine spheres. Thanks to the abundance of defects in the hollow carbon sphere shell, the large active area, the high content of pyrrolic N, and B−C, C−N, and other electrocatalytic active sites, NHCS@B 1 P 2 exhibits excellent oxygen reduction reaction (ORR) catalytic performance. Electrochemical tests show that NHCS@B 1 P 2 has outstanding ORR electroactivity in alkaline electrolytes, with a half-wave potential (E 1/2 ) 60 mV higher than Pt/C and a limiting diffusion current density 0.97 mA cm −2 greater than Pt/C. Meanwhile, NHCS@B 1 P 2 (E 1/2 = 0.86 V) still exhibits superior electrochemical performance to Pt/C in neutral media. It is noteworthy that a Zn−air battery (ZAB) using NHCS@B 1 P 2 as the ORR catalyst exhibits a higher peak power density (158.5 mW cm −2 for an alkaline ZAB and 104.6 mW cm −2 for a neutral ZAB) than Pt/C (136/46.7 mW cm −2 ) in both alkaline and neutral electrolytes. In step discharge at different current densities, it still has a stable voltage value comparable to (even higher than) Pt/C. In addition, NHCS@B 1 P 2 exhibits a more durable and stable voltage plateau than Pt/C at 10 mA cm −2 . This work provides a practical and valuable avenue for the application of heteroatom-doped carbon-based ORR catalysts in ZABs.

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An altered nanoemulsion assembly strategy for in-situ synthesis of Co2P/NP-C nanospheres as advanced oxygen reduction electrocatalyst for zinc-air batteries

Cited by 46 publications

References 47 publications

Growing Co–Ni–Se nanosheets on 3D carbon frameworks as advanced dual functional electrodes for supercapacitors and sodium ion batteries

Growing Co–Ni–Se nanosheets on 3D carbon frameworks as advanced dual functional electrodes for supercapacitors and sodium ion batteries

Research Progress of Bifunctional Oxygen Reactive Electrocatalysts for Zinc–Air Batteries

Nitrogen/Phosphorus/Boron-Codoped Hollow Carbon Spheres as Highly Efficient Electrocatalysts for Zn–Air Batteries

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