An active site pre-anchoring and post-exposure strategy in Fe(CN)64-@PPy derived Fe/S/N-doped carbon electrocatalyst for high performance oxygen reduction reaction and zinc-air batteries

Xiao, Zuoxu; Wu, Yanling; Cao, Shoufu; Yan, Wei; Chen, Baotong; Xing, Tao; Li, Zhi; Lu, Xiaoqing; Chen, Yanli; Wang, Kang; Jiang, Jianzhuang

doi:10.1016/j.cej.2020.127395

Cited by 44 publications

(19 citation statements)

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“…[ 30 ] The large specific surface area can facilitate the rapid transport of reaction intermediates and provide more active sites for catalysis. [ 37 ] And the mesopore sizes of Co–N–GA‐1 and Co–N–GA‐2 have mostly distributed around 3.9 nm, which are among the range of a more suitable pore size of 3.5–5.5 nm for the ORR (inset of Figure 6b). [ 36 ] This indicated that the formation of the suitable mesopore sizes should result from the suitable precursors combined with porous carbon support.…”

Section: Resultsmentioning

confidence: 99%

A Facile Approach to Efficiently Load and Isolate CoN Active Sites for the Preparation of a High‐Performance Co–N–C Oxygen Reduction Catalyst

Jiang

Wang

et al. 2023

Energy Tech

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A facile approach is developed for the preparation of an oxygen reduction reaction (ORR) catalyst Co–N–GA‐1 by pyrolyzing a well‐designed precursor CoTPP/H2TPP@OGA. In the precursor, Co is preanchored into the porphyrinato cobalt CoTPP molecule by Co‐N4 core that is further protected by the metal‐free porphyrin H2TPP depending on the intermolecular π–π interaction during the self‐assembled process on the surface of lipophilic porous original graphene aerogel. The resulted Co–N–GA‐1 owns a Co elemental content up to 1.67%, which is ≈13 times than that of Co‐N‐CB‐1 originated from a CoTPP/H2TPP precursor absorbed on commercial carbon black. Meanwhile, CoN content accounts for 71.7% of the total Co‐based species in the Co–N–GA‐1, more than that of CoN‐GA‐2 (58.9%) originated from the CoTPP@OGA precursor. Consequently, Co–N–GA‐1 exhibits the most ORR performance among the present three catalysts with the more positive onset and half‐wave potentials of 0.96 and 0.88 V vs reversible hydrogen electrode, respectively, also superior to those of the commercial 20 wt% Pt/C and most of the Co‐based catalysts reported so far. Furthermore, Zn‐air battery assembled with Co–N–GA‐1 exhibits a higher peak power density of 110 mW cm−2 and excellent durability than that with Pt/C.

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Section: Resultsmentioning

confidence: 99%

A Facile Approach to Efficiently Load and Isolate CoN Active Sites for the Preparation of a High‐Performance Co–N–C Oxygen Reduction Catalyst

Jiang

Wang

et al. 2023

Energy Tech

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“…RRDE measurements (Figure 3d) indicate that the electron transfer number (n) was close to 4, and the H 2 O 2 yield was below 10% between 0.2 and 0.9 V vs RHE, suggesting an efficient four-electron reaction pathway (Figure 3e). 47,48 The catalytic stability of Pt/ Mo 2 N MRs was further examined by chronoamperometry. The i−t curves (Figure 3f) show that the current retention was 92.0% after 10,000 s for Pt/Mo 2 N MRs, much higher than that for Pt/C, signifying the significance of electronic interactions enabled by Mo 2 N MRs on Pt NPs.…”

Section: Resultsmentioning

confidence: 99%

Robust Oxygen Reduction Electrocatalysis Enabled by Platinum Rooted on Molybdenum Nitride Microrods

Zhang

Huang

et al. 2022

Inorg. Chem.

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Robust oxygen reduction electrocatalysis is central to renewable fuel cells and metal− air batteries. Herein, Pt nanoparticles (NPs) rooted on porous molybdenum nitride microrods (Pt/ Mo 2 N MRs) are rationally constructed toward the oxygen reduction reaction (ORR). Owing to the desired composition with strong electronic metal−support interactions (EMSIs) and a porous onedimensional structure supporting ultrafine NPs, the developed Pt/Mo 2 N MRs possess much higher ORR mass and specific activities than commercial Pt/C. In situ Raman and density functional theory calculations reveal that the EMSI weakens the adsorption of intermediates over Pt/Mo 2 N MRs via an associative mechanism. Moreover, the porous Mo 2 N support stabilizes these high activities. Impressively, a homemade zinc−air battery driven by Pt/Mo 2 N MRs delivers excellent performance including a peak power density of 167 mW cm −2 and a high rate capability that ranged from 5 to 50 mA cm −2 . This work highlights the role of EMSI in promoting robust ORR electrocatalysis, thus providing a promising approach for efficient and robust cathode materials for advanced metal−air batteries.

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“…Numerous studies have calculated the specific discharge capacity on the basis of the so called "consumed zinc" instead of using the total mass of the installed zinc plate when using stack cell, as it is common practice in battery research. [54,[105][106][107][108][109][110][111][112][113][114][115] The discharge capacity in the "consumed zinc"-approximation is not determined by battery cyclization but by discharging the cell once. The capacity obtained can be taken from the discharge curve, which is shown schematically in Figure 5.…”

Section: A View On Cell Designmentioning

confidence: 99%

A Long‐Overlooked Pitfall in Rechargeable Zinc–Air Batteries: Proper Electrode Balancing

Deckenbach

Schneider

2023

Adv Materials Inter

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advance at the end of the 1990s, the current electrification needs in nearly all sectors would be difficult to imagine, striving our daily life from miniaturized applications up to massive energy storage demands in transportation. With regards to zero-emission passenger transportation using battery powered vehicles, the advantage of the lithium-ion battery seems currently undisputed.This steadily increasing demand for lithium-ion batteries currently raises the question of whether and how long the availability of raw materials can be guaranteed. Moreover, the constantly expanding range of applications for the lithium-ion technology means that the safety aspects to be fulfilled are becoming ever more stringent, which are known to be the weak spot of this system due to the high reactivity of lithium. [1][2][3][4] Consequently, the lithium-ion battery is subjected to enormous performance pressure, because as a universal remedy it must meet the most diverse requirements. [5] Nevertheless, the lithium-ion battery is meanwhile used ubiquitously due to the current absence of suitable and technologically mature alternatives, which further exacerbates the raw material situation. [5,6] Due to the enormous application potential of the lithium-ion battery, other battery technologies (nickel-cadmium, nickelmetal hydride, lead-acid) that have been known for a long time are meanwhile pushed out of the market or represent only niche products known for just a specific application. [7][8][9] This is true for the zinc-air battery too, which is mainly known to the consumer as a non-rechargeable battery for hearing aids. However, it has also been known as a battery and mobile charger for military applications, since it is heavy duty under the most adverse conditions, while allowing high energy density and maintaining high safety requirements. [10][11][12] Yet, already in the mid-1990s, zinc-air batteries were on the verge of their breakthrough as a rechargeable energy storage device that would usher in the complete electrification of Germany's postal fleet at that time. [13] As a mechanically rechargeable battery system in a van fleet of 60 cars, the used zinc metal (Zn) anodes were removed as a full pack from the spent battery set and replaced by a fresh metal pack to recover the battery. With that, a usage of more than 320 km with an energy density of 200 Wh kg −1 had already been achieved under realistic conditions. [13] In times of an ever-increasing demand for portable energy storage systems, post-lithium-based battery systems are increasingly coming into the focus of current research. In this realm, zinc-air batteries can be considered a very promising candidate to expand the existing portfolio of lithium-based rechargeable battery systems due to their high theoretical energy density of 1086 Wh kg −1 . Despite a steady increase in research over the past 5 years, a breakthrough in realizing fully electrically rechargeable zinc-air batteries has yet to come. This perspective article highlights pitfalls that have probably hampered ...

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An active site pre-anchoring and post-exposure strategy in Fe(CN)64-@PPy derived Fe/S/N-doped carbon electrocatalyst for high performance oxygen reduction reaction and zinc-air batteries

Cited by 44 publications

References 59 publications

A Facile Approach to Efficiently Load and Isolate CoN Active Sites for the Preparation of a High‐Performance Co–N–C Oxygen Reduction Catalyst

A Facile Approach to Efficiently Load and Isolate CoN Active Sites for the Preparation of a High‐Performance Co–N–C Oxygen Reduction Catalyst

Robust Oxygen Reduction Electrocatalysis Enabled by Platinum Rooted on Molybdenum Nitride Microrods

A Long‐Overlooked Pitfall in Rechargeable Zinc–Air Batteries: Proper Electrode Balancing

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