TiC supported amorphous MnOx as highly efficient bifunctional electrocatalyst for corrosion resistant oxygen electrode of Zn-air batteries

Song, Shidong; Li, Wanjun; Deng, Yaping; Ruan, Yanli; Zhang, Yining; Qin, Xuhui; Chen, Zhongwei

doi:10.1016/j.nanoen.2019.104208

Cited by 99 publications

(51 citation statements)

References 55 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

110

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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

110

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“…Since the discovery of a cubane‐like Mn 3 O 4 Ca structure as active site in the natural oxygenic photosystem II (PS‐II), manganese oxides (MnO x ) as ORR and OER electrocatalysts have captured intensive attention due to their natural abundance, variety of crystallographic structures, low cost, and toxicity. [ 6,15-20 ] For example, manganese dioxide (MnO 2 ) can be formed in various crystal structures, such as α‐MnO 2 with 2 × 2 tunnels, γ‐MnO 2 with 1 × 2 tunnels, and β‐MnO 2 with 1 × 1 tunnels, which is a type of most commonly studied manganese oxides for supercapacitors and oxygen‐based electrochemical reactions. [ 6,15,18,21-25 ] More importantly, some manganese oxides exhibited considerable catalytic activity for both the ORR and OER, when with the noble metal catalysts, and had been identified as one of the most promising bifunctional candidates.…”

Section: Introductionmentioning

confidence: 99%

Rich Surface Oxygen Vacancies of MnO₂ for Enhancing Electrocatalytic Oxygen Reduction and Oxygen Evolution Reactions

Zhuang

Yin

et al. 2021

Adv Energy and Sustain Res

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Development of catalysts for the electrochemical oxygen reactions, namely, oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), is critical for the application of various renewable energy technologies. The aim of this work is to prepare low‐cost MnO2 electrocatalyst with high activity for the ORR and OER via introduction of surface oxygen vacancies (OVs). Herein, the procedure of thermal heating treatment under air or H2 has been demonstrated as an efficient way to create OVs on the surface of α‐MnO2 and β‐MnO2 nanorods, which are found to be highly active for both ORR and OER. The existence of surface OVs can modulate the intrinsic activity of α‐MnO2 and β‐MnO2 and improve their ORR and OER kinetics. More importantly, the H2‐treated MnO2 possesses much more surface OVs and thus exhibits much better catalytic performances for ORR and OER in comparison with MnO2 obtained by common annealing treatments under air. Especially, the H2‐treated α‐MnO2 nanorods show the best activity for the ORR and OER. The results confirm that the heating treatment under H2 reducing atmosphere can be a facile and efficient process to develop bifunctional Mn‐based electrocatalysts for electrochemical oxygen reactions.

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“…It can be directly used as cathode catalyst of Zn-air battery by constructing different defect engineering in TMOs. [128,129] The reactions of the cathode in the Zn-air battery during the charging/discharging process are OER and ORR. The researchers hope to build a catalyst that meets both high OER&ORR activity and stability to achieve the practical application of the Zn-air battery.…”

Section: Metal-air Batterymentioning

confidence: 99%

“…It can be directly used as cathode catalyst of Zn‐air battery by constructing different defect engineering in TMOs [128,129] . The reactions of the cathode in the Zn‐air battery during the charging/discharging process are OER and ORR.…”

Section: Energy Storage Devicementioning

confidence: 99%

Recent Progress on Defect‐rich Transition Metal Oxides and Their Energy‐Related Applications

Wang

Liang

Zheng

et al. 2020

Chemistry An Asian Journal

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The applications of many energy-related electrochemical energy conversion and storage devices are changing with each passing day. Oxygen evolution reaction (OER), hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR) are the key steps in the commercial application of these energy conversion/storage equipment. Defect-rich transition metal oxides (TMOs), such as Co, Mn, Fe, Ni, etc., have always been one of the most promising electrocatalysts, which are cheap, easy to obtain, high in catalytic activity and stable during electrocatalysis. In this review, we first introduce the definition, classification, characteristics, and construction of defects. Then, the latest developments of defect-rich TMO electrocatalysts in electro-catalysis and energy conversion storage device is summarized. Furthermore, the relationship between defects and activity and the potential mechanism are also discussed. The defects in defect-rich TMOs can adjust the surface/interface electronic structure of the electrocatalyst, change the adsorption energy of the intermediate product, or increase the intrinsic catalytic activity of active sites, which are beneficial for enhanced catalytic performance. Finally, the current challenges and prospects of defect-rich TMO electrocatalysts are proposed. Therefore, the introduction of defects in TMO will be a potential strategy for the rational design of high-performance electrocatalysts in the future.

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TiC supported amorphous MnOx as highly efficient bifunctional electrocatalyst for corrosion resistant oxygen electrode of Zn-air batteries

Cited by 99 publications

References 55 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

Rich Surface Oxygen Vacancies of MnO₂ for Enhancing Electrocatalytic Oxygen Reduction and Oxygen Evolution Reactions

Recent Progress on Defect‐rich Transition Metal Oxides and Their Energy‐Related Applications

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TiC supported amorphous MnOx as highly efficient bifunctional electrocatalyst for corrosion resistant oxygen electrode of Zn-air batteries

Cited by 99 publications

References 55 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

Rich Surface Oxygen Vacancies of MnO2 for Enhancing Electrocatalytic Oxygen Reduction and Oxygen Evolution Reactions

Recent Progress on Defect‐rich Transition Metal Oxides and Their Energy‐Related Applications

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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

Rich Surface Oxygen Vacancies of MnO₂ for Enhancing Electrocatalytic Oxygen Reduction and Oxygen Evolution Reactions