Insights into KMnO4 etched N-rich carbon nanotubes as advanced electrocatalysts for Zn-air batteries

Yi, Shijie; Qin, Xueping; Liang, Caihong; Li, Jingsha; Rajagopalan, Ranjusha; Zhang, Zejie; Song, Jingya; Tang, Yougen; Cheng, Peng; Wang, Haiyan; Shao, Minhua

doi:10.1016/j.apcatb.2019.118537

Cited by 87 publications

(45 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most common inherent defects are edges, vacancies or pores, and topological Stone‐Wales defects 33 . The introduction of the former two defects has been experimentally implemented via physical strategies (plasma or ball milling) and chemical methods (reduction or etching) 34‐36 . In addition, extrinsic defects are another vital type of carbon defects, usually induced by heteroatom doping like N, S, P, F, and so on 37‐40 .…”

Section: Defective Carbon For Potassium‐ion Batteriesmentioning

confidence: 99%

Carbon‐based anode materials for potassium‐ion batteries: From material, mechanism to performance

Zhou

Guo

2021

SmartMat

View full text Add to dashboard Cite

Potassium‐ion batteries (PIBs) show great potential in the application of large‐scale energy storage devices due to the comparable high operating voltage with lithium‐ion batteries and lower cost. Carbon‐based materials are promising candidates as anodes for PIBs, for their low cost, high abundance, nontoxicity, environmental benignity, and sustainability. In this review, we will first discuss the potassium storage mechanisms of graphitic and defective carbon materials and carbon‐based composites with various compositions and microstructures to comprehensively understand the potassium storage behavior. Then, several strategies based on heteroatoms doping, unique nanostructure design, and introduction of the conductive matrix to form composites are proposed to optimize the carbon‐based materials and achieve high performance for PIBs. Finally, we conclude the existing challenges and perspectives for further development of carbon‐based materials, which is believed to promote the practical application of PIBs in the future.

show abstract

Section: Defective Carbon For Potassium‐ion Batteriesmentioning

confidence: 99%

Carbon‐based anode materials for potassium‐ion batteries: From material, mechanism to performance

Zhou

Guo

2021

SmartMat

View full text Add to dashboard Cite

show abstract

“…It has been demonstrated that high electric conductivity could be realized by heteroatoms doping in carbon materials, in which the heteroatoms such as F bonded to C atoms act as electron acceptors and thus promote the charge transfer of the doped carbon matrix. [105,106] For example, Gong et al successfully prepared metal free N-doped CNT arrays by chemical vapor deposition method using iron (II) phthalocyanine and ammonia as precursors and studied their oxygen reduction catalytic performance. Since then, the heteroatom-doped carbon materials have been explored as the hopeful ORR catalyst for zinc-air batteries.…”

Section: Heteroatom Doped Carbon Materials As Orr Electrocatalystmentioning

confidence: 99%

An Overview of Oxygen Reduction Electrocatalysts for Rechargeable Zinc-Air Batteries Enabled by Carbon and Carbon Composites

Zhao¹,

Wei²,

Zhang³

et al. 2021

Eng. Sci.

View full text Add to dashboard Cite

The merits, such as high specific capacity, less self-discharge and high storage life, make Zinc (Zn)-air batteries promising to serve as energy storage and conversion equipment to effectively solve the energy crisis and environmental pollution caused by the rapid increasing global energy consumption, especially the use of fossil energy. However, the applications and further deployments of the Zn-air batteries depend on costly noble metal as cathodes and are limited by sluggish electrochemical reaction kinetics. As one of the competitive alternatives to noble metals, carbon-based materials such as metal/carbon, nonmetal atom/carbon, metal oxide/carbon and metal-metal oxide-heteroatom/carbon materials exhibit the advantages of structural diversity, high porosity, excellent volume conversion efficiency and non-toxicity. With the emphases on structural improvement and composition optimization, this article summarizes the advances in the development of oxygen reduction reaction (ORR) electrocatalyst based on various carbon contained composites for Zn-air battery cathodes. Furthermore, the challenges and perspectives of the research directions on the Zn-air battery with carbon contained composites as catalyst are discussed in detail.

show abstract

“…Besides, the nitrogen‐containing polymers are also employed as a desirable structural template to tailor the construction of high‐efficiency ORR catalysts [84] . A hollow tube‐like PPy template‐derived N‐doped carbon nanotubes (N−CNTs) have been emerged as an advanced material with high contents of pyridinic‐N and defects [85] . Another study revealed that this hollow PPy tube loading zeolite imidazolate framework‐67 (ZIF‐67) hybrids derived corn‐like Co, N‐doped hollow carbon tubes (Co@hNCTs) electrocatalyst exhibited great potentials in rechargeable Zn‐air batteries (Figure 9a) [86] .…”

Section: Rational Design Of Nitrogen‐rich Precursors and Porous Strucmentioning

confidence: 99%

“…[84] A hollow tubelike PPy template-derived N-doped carbon nanotubes (NÀ CNTs) have been emerged as an advanced material with high contents of pyridinic-N and defects. [85] Another study revealed that this hollow PPy tube loading zeolite imidazolate framework-67 (ZIF-67) hybrids derived corn-like Co, N-doped hollow carbon tubes (Co@hNCTs) electrocatalyst exhibited great potentials in rechargeable Zn-air batteries (Figure 9a). [86] PPy nanotubes acted as a conductive framework to load ZIF-67 in-situ, thereby confining the highly dispersed cobalt nanocrystals on the hollow carbon nanotubes with a hierarchical pore structure (Figure 9b,c).…”

Section: Polymersmentioning

confidence: 99%

Transition Metal and Nitrogen Co‐Doped Carbon‐based Electrocatalysts for the Oxygen Reduction Reaction: From Active Site Insights to the Rational Design of Precursors and Structures

et al. 2020

View full text Add to dashboard Cite

Considering the urgent requirement for clean and sustainable energy, fuel cells and metal‐air batteries have emerged as promising energy storage and conversion devices to alleviate the worldwide energy challenges. The key step in accelerating the sluggish oxygen reduction reaction (ORR) kinetics at the cathode is to develop cost‐effective and high‐efficiency non‐precious metal catalysts, which can be used to replace expensive Pt‐based catalysts. Recently, the transition metal and nitrogen co‐doped carbon (M−Nx/C) materials with tailored morphology, tunable composition, and confined structure show great potential in both acidic and alkaline media. Herein, the mechanism of ORR is provided, followed by recent efforts to clarify the actual structures of active sites. Furthermore, the progress of optimizing the catalytic performance of M−Nx/C catalysts by modulating nitrogen‐rich precursors and porous structure engineering is highlighted. The remaining challenges and development prospects of M−Nx/C catalysts are also outlined and evaluated.

show abstract

Insights into KMnO4 etched N-rich carbon nanotubes as advanced electrocatalysts for Zn-air batteries

Cited by 87 publications

References 56 publications

Carbon‐based anode materials for potassium‐ion batteries: From material, mechanism to performance

Carbon‐based anode materials for potassium‐ion batteries: From material, mechanism to performance

An Overview of Oxygen Reduction Electrocatalysts for Rechargeable Zinc-Air Batteries Enabled by Carbon and Carbon Composites

Transition Metal and Nitrogen Co‐Doped Carbon‐based Electrocatalysts for the Oxygen Reduction Reaction: From Active Site Insights to the Rational Design of Precursors and Structures

Contact Info

Product

Resources

About