Advanced Architectures and Relatives of Air Electrodes in Zn–Air Batteries

Pan, Jing; Xu, Yang; Yang, Huan; Dong, Zehua; Liu, Hongfang; Xia, Bao Yu

doi:10.1002/advs.201700691

Cited by 676 publications

(393 citation statements)

References 345 publications

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“…The charging potential of 2 V or above is often required. Thus, the energy efficiency of most of the current rechargeable Zn–air batteries is less than 60%, which can be attributed to several issues . First, the bifunctional O 2 electrocatalysts on air electrodes are not active enough to effectively drive the sluggish ORR and OER during the discharging and charging events.…”

Section: Fundamentals Of Electrochemically Rechargeable Zn–air Batteriesmentioning

confidence: 99%

“…In the last few years, several review articles have provided excellent introductions on the geometric structure and charge storage mechanisms of Zn–air batteries as well as the efforts devoted to improving various battery components . Nevertheless, the research interest over Zn–air batteries is progressing very rapidly as evident by the increase in number of scientific publications from “78” (till the end of 2010) to “316” as of May 2018 (based on a simple search made on the Web of Science using “Zinc–air battery” (in quotation marks) as the keywords).…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Chen

Zhou

Karahan

et al. 2018

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The century-old zinc-air (Zn-air) battery concept has been revived in the last decade due to its high theoretical energy density, environmental-friendliness, affordability, and safety. Particularly, electrically rechargeable Zn-air battery technologies are of great importance for bulk applications like electric vehicles, grid management, and portable electronic devices. Nevertheless, Zn-air batteries are still not competitive enough to realize widespread practical adoption because of issues in efficiency, durability, and cycle life. Here, following an introduction to the fundamentals and performance testing techniques, the latest research progress related to electrically rechargeable Zn-air batteries is compiled, particularly new key findings in the last five years (2013-2018). The strategies concerning the development of Zn and air electrodes are in focus. The design of other battery components, namely electrolytes and separators are also discussed. Poor performance of O electrocatalysts and the lack of the long-term stability of Zn electrodes and electrolytes remain major challenges. Finally, recommendations regarding the testing routines and materials design are provided. It is hoped that this up-to-date account will help to shape the future research activities toward the development of practical electrically rechargeable Zn-air batteries with extended lifetime and superior performance.

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Section: Fundamentals Of Electrochemically Rechargeable Zn–air Batteriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Chen

Zhou

Karahan

et al. 2018

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198

150

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“…Since metallic lithium will react with water, a ceramic lithium superionic conductor film (LISICON) must be employed as separator to avoid internal short, protect lithium anode, and facilitate lithium-ion diffusion, as shown in Figure 2a. [22,23] Therefore, here, we only focus on the aqueous-based rechargeable Zn-air batteries. An improvement is achieved by integrating an organic electrolyte layer between metallic lithium and LISICON, as shown in Figure 2b.…”

Section: Cell Configurations and Principles Ofmentioning

confidence: 99%

Nanocarbon‐Based Electrocatalysts for Rechargeable Aqueous Li/Zn‐Air Batteries

Wang

Chen

et al. 2018

ChemElectroChem

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Zn-air batteries have become the most attractive energy storage devices because of their extremely high theoretical energy density, which enables electric vehicles to drive long range. However, current achievements still suffer from poor cycle life, low practical energy density, low round-trip efficiency, and high manufacturing costs. One of the key challenges is the sluggish kinetics of oxygen electrochemistry during discharge and charge cycles. Thus, significant breakthroughs in design and synthesis of efficient electrocatalysts for the oxygen redox reaction are highly demanded. Nanocarbons, especially heteroatoms doped nanocarbons, are potential oxygen reduction reaction (ORR) catalysts due to the reasonable balance between catalytic activity, durability, and cost. Importantly, by introduction of transition metal nanoparticles, spinel oxides, layered-double hydroxides, perovskite oxides, and other metal oxides, the constructed nanocarbon-based materials could deliver promising bifunctional ORR and oxygen evolution reaction (OER) catalytic properties, which could be employed as air-cathode materials to improve energy storage performances, even to get commercialized. Here, an overview of the recent progress of nanocarbon-based electrocatalysts as air-cathode materials for rechargeable aqueous Li/Zn-air batteries is provided, aiming to highlight the benefits and issues of nanocarbon-based electrocatalysts as well as to outline the most promising results and applications so far.[a] Prof.

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“…In recent years, some novel fuel cells and metal-air batteries, a class of devices that convert the chemical energy directly into electricity by electrochemical reactions, have attracted increasing attention [1][2][3][4]. In these devices, the oxygen reduction reaction (ORR) on the cathode is very slow kinetically, and thus requires platinum (Pt) as electrocatalyst.…”

Section: Introductionmentioning

confidence: 99%

N,S Co-Doped Carbon Nanofibers Derived from Bacterial Cellulose/Poly(Methylene blue) Hybrids: Efficient Electrocatalyst for Oxygen Reduction Reaction

Liu

Qiao

et al. 2018

Catalysts

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Exploring inexpensive and highly efficient electrocatalyst to decrease the overpotential of oxygen reduction reaction (ORR) is one of the key issues for the commercialization of energy conversion and storage devices. Heteroatom-doped carbon materials have attracted increasing attention as promising electrocatalysts. Herein, we prepared a highly active electrocatalyst, nitrogen, sulfur co-doped carbon nanofibers (N/S-CNF), via in situ chemical oxidative polymerization of methylene blue on the bacterial cellulose nanofibers, followed by carbonization process. It was found that the type of nitrogen/sulfur source, methylene blue and poly(methylene blue), has significantly influence on the catalytic activity of the resultant carbon nanofibers. Benefiting from the porous structure and high surface area (729 m 2 /g) which favors mass transfer and exposing of active N and S atoms, the N/S-CNF displays high catalytic activity for the ORR in alkaline media with a half-wave potential of about 0.80 V, and better stability and stronger methanol tolerance than that of 20 wt % Pt/C, indicating great potential application in the field of alkaline fuel cell.

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Advanced Architectures and Relatives of Air Electrodes in Zn–Air Batteries

Cited by 676 publications

References 345 publications

Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Nanocarbon‐Based Electrocatalysts for Rechargeable Aqueous Li/Zn‐Air Batteries

N,S Co-Doped Carbon Nanofibers Derived from Bacterial Cellulose/Poly(Methylene blue) Hybrids: Efficient Electrocatalyst for Oxygen Reduction Reaction

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