Nitrogen‐Doped Cobalt Pyrite Yolk–Shell Hollow Spheres for Long‐Life Rechargeable Zn–Air Batteries

Lu, Xingwen; Zhang, Song Lin; Shangguan, Enbo; Zhang, Peng; Gao, Shuyan; Lou, Xiong Wen David

doi:10.1002/advs.202001178

Cited by 227 publications

(125 citation statements)

References 47 publications

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“…Furthermore, a wide range of comparisons shows that the as‐prepared Co 9 S 8 @N, S–C catalyst is better than most of the highly performing bifunctional catalysts reported so far (see Table S1 in the Supporting Information for a detailed comparison). [ 10,27–49 ]…”

Section: Resultsmentioning

confidence: 99%

N, S Codoped Carbon Matrix‐Encapsulated Co₉S₈ Nanoparticles as a Highly Efficient and Durable Bifunctional Oxygen Redox Electrocatalyst for Rechargeable Zn–Air Batteries

Lyu

Yao

Ali

et al. 2021

Advanced Energy Materials

114

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Herein, a N, S co-doped carbon encapsulating Co 9 S 8 nanoparticles (Co 9 S 8 @N, S-C) catalyst is successfully synthesized by a new precursor of Co-pyridine coordinated-polymer consisting of 2,6-diacetylpyridine and 4,4′-dithiodianiline. Benefiting from the abundant pore-structure (average pore-size ≈25nm) and unique electronic-properties of the Co 9 S 8 and N, S-C layer, the as-prepared Co 9 S 8 @N, S-C exhibits rapid oxygen reduction reaction (ORR) kinetics with high electron transfer number of ≈3.998 and demonstrates a low overpotential of 304 mV for the oxygen evolution reaction (OER). It exhibits a small potential difference of 0.647V for overall ORR/OER activity, outperforming most of the non-precious metal-catalysts previously reported. The rechargeable Zn-Air battery test further demonstrates its excellent activity and stability, in which the battery delivers a maximum power density output of 259 mW cm −2 , a specific capacity of 862 mAh g Zn −1 , and after continuous 110 h operation the charge-discharge round-trip efficiency only reduces by 4.83%. Theoretical calculation studies show that the surface N, S-C layers and Co 9 S 8 can adjust each other's Fermi levels, so that the adsorption energy of Co 9 S 8 @N, S-C on O intermediate is more favorable than using Co 9 S 8 and N, S-C alone. This study reveals the structure-function relationship of coated-nanostructures with multifunctional electrocatalytic properties, and provides a feasible strategy for the design of non-noble metal-catalysts.

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Section: Resultsmentioning

confidence: 99%

N, S Codoped Carbon Matrix‐Encapsulated Co₉S₈ Nanoparticles as a Highly Efficient and Durable Bifunctional Oxygen Redox Electrocatalyst for Rechargeable Zn–Air Batteries

Lyu

Yao

Ali

et al. 2021

Advanced Energy Materials

114

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confidence: 99%

Stable High‐Capacity Organic Aluminum–Porphyrin Batteries

Han

Song

et al. 2021

Advanced Energy Materials

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electric vehicles, and more. [4,5] Among these rechargeable battery technologies, sodium, [6][7][8] magnesium, [9,10] zinc, [11,12] calcium, [13] and aluminum [14][15][16] ion batteries have drawn unique attention as the candidates of next-generation batteries. In particular, rechargeable aluminum-ion batteries (AIBs) hold impressive advantages, such as wide temperature range, high safety, and low cost. [17][18][19] However, there is still plenty of room for improving the energy density and long-term life cycle of the positive electrode materials in AIBs. Hence, it is significant to design appropriate positive electrode materials to promote the performance of current AIBs. Recently, extensive efforts have been devoted to the development of organic materials owing to their unique structural features, such as chemical diversity and structure designability, which allows for achieving suitable active molecules for targeted electrodes. [20][21][22] In addition, weak intermolecular forces between active ions in the electrolyte and host materials are beneficial to the reversibility and kinetics of electrochemical reactions. [23,24] Moreover, molecular engineering could be employed to manipulate the voltage plateaus, electrical conductivity, and structural stability of organic materials, which enables the organic molecules to serve as a promising candidate material for next-generation electrode materials.At present, organic electrode materials reported in the AIBs mainly refer to the oxygen or nitrogen active sites in the compounds with carbonyl (CO) or in the nitrogen-containing compounds (CN), due to their structural diversity and chemical stability. In addition, this type of organic material is mainly based on coordination chemical reactions. [21,22,[25][26][27][28] Specifically, many studies on the compounds with carbonyl functional group have been reported. For example, Stoddart [25] and his colleagues synthesized a redox-active phenanthraquinone (PQ) macrocyclic compound, and the corresponding insertion mechanism between aluminum complex ions and conjugated carbonyl materials has been studied. Subsequently, they have improved specific capacity, electrical conductivity, and areal loading via blending PQ with graphite flakes. In the study from Lu and coworkers, [26] a polyimide (PI)/metal-organic framework (MOFs) hybrid material was reported. Also, Wang and coworkers [22] employed PI/CNT as the positive material in Al-organic battery. In the Aluminum-ion batteries (AIBs) attract interest for their promising features of superior safety and long-life energy storage. Organic materials with engineered active groups are considered promising for promoting energy storage capabilities. However, the corresponding energy density (both voltage plateau and sufficient active sites required) and stability are still unexpectedly poor. To address these challenges, here π-conjugated organic porphyrin molecules, that is, 5,10,15,20-tetraphenylporphyrin (H 2 TPP) and 5,10,15,20-tetrakis(4carboxyphenyl) porphyrin (H 2 TCPP), are selec...

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“…ORR is one of the most studied electrocatalytic reactions, which is imperative in various applications, like fuel cells and ZABs. [ 170,171 ] The ideal underlying mechanism for ORR in fuel cells consists of a four‐electron reaction, during which O 2 is directly reduced to H 2 O under acidic conditions using a high output voltage. However, when catalyst activity is low, the ORR occurs via a two‐electron reaction, and H 2 O 2 is produced instead.…”

Section: Non‐vdw 2d Materials For Electrocatalysismentioning

confidence: 99%

Electronic Modulation of Non‐van der Waals 2D Electrocatalysts for Efficient Energy Conversion

et al. 2021

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The exploration of efficient electrocatalysts for energy conversion is important for green energy development. Owing to their high surface areas and unusual electronic structure, 2D electrocatalysts have attracted increasing interest. Among them, non‐van der Waals (non‐vdW) 2D materials with numerous chemical bonds in all three dimensions and novel chemical and electronic properties beyond those of vdW 2D materials have been studied increasingly over the past decades. Herein, the progress of non‐vdW 2D electrocatalysts is critically reviewed, with a special emphasis on electronic structure modulation. Strategies for heteroatom doping, vacancy engineering, pore creation, alloying, and heterostructure engineering are analyzed for tuning electronic structures and achieving intrinsically enhanced electrocatalytic performances. Lastly, a roadmap for the future development of non‐vdW 2D electrocatalysts is provided from material, mechanism, and performance viewpoints.

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Nitrogen‐Doped Cobalt Pyrite Yolk–Shell Hollow Spheres for Long‐Life Rechargeable Zn–Air Batteries

Cited by 227 publications

References 47 publications

N, S Codoped Carbon Matrix‐Encapsulated Co₉S₈ Nanoparticles as a Highly Efficient and Durable Bifunctional Oxygen Redox Electrocatalyst for Rechargeable Zn–Air Batteries

N, S Codoped Carbon Matrix‐Encapsulated Co₉S₈ Nanoparticles as a Highly Efficient and Durable Bifunctional Oxygen Redox Electrocatalyst for Rechargeable Zn–Air Batteries

Stable High‐Capacity Organic Aluminum–Porphyrin Batteries

Electronic Modulation of Non‐van der Waals 2D Electrocatalysts for Efficient Energy Conversion

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Nitrogen‐Doped Cobalt Pyrite Yolk–Shell Hollow Spheres for Long‐Life Rechargeable Zn–Air Batteries

Cited by 227 publications

References 47 publications

N, S Codoped Carbon Matrix‐Encapsulated Co9S8 Nanoparticles as a Highly Efficient and Durable Bifunctional Oxygen Redox Electrocatalyst for Rechargeable Zn–Air Batteries

N, S Codoped Carbon Matrix‐Encapsulated Co9S8 Nanoparticles as a Highly Efficient and Durable Bifunctional Oxygen Redox Electrocatalyst for Rechargeable Zn–Air Batteries

Stable High‐Capacity Organic Aluminum–Porphyrin Batteries

Electronic Modulation of Non‐van der Waals 2D Electrocatalysts for Efficient Energy Conversion

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Product

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N, S Codoped Carbon Matrix‐Encapsulated Co₉S₈ Nanoparticles as a Highly Efficient and Durable Bifunctional Oxygen Redox Electrocatalyst for Rechargeable Zn–Air Batteries

N, S Codoped Carbon Matrix‐Encapsulated Co₉S₈ Nanoparticles as a Highly Efficient and Durable Bifunctional Oxygen Redox Electrocatalyst for Rechargeable Zn–Air Batteries