Hierarchical Co3O4 porous nanowires as an efficient bifunctional cathode catalyst for long life Li-O2 batteries

Liu, Qingchao; Jiang, Yinshan; Xu, Ji‐Jing; Xu, Dan; Zhou, Chang; Yin, Yanbin; Liu, Wanqiang; Zhang, Xinbo

doi:10.1007/s12274-014-0689-3

Cited by 66 publications

(31 citation statements)

References 34 publications

(26 reference statements)

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“…To meet commercial demands while maintaining high capacity and excellent cycling performance, non-noble metal oxides, such as MnO 2 , [269,270] Co 3 O 4 , [271] CoO, [272] NiCo 2 O 4 , [273] with high ORR and OER electrocatalysis have been investigated for Li-O 2 batteries. To meet commercial demands while maintaining high capacity and excellent cycling performance, non-noble metal oxides, such as MnO 2 , [269,270] Co 3 O 4 , [271] CoO, [272] NiCo 2 O 4 , [273] with high ORR and OER electrocatalysis have been investigated for Li-O 2 batteries.…”

Section: Lithium-oxygen Batteriesmentioning

confidence: 99%

“…Ultrathin δ-MnO 2 nanosheet-assembled nanotubes have been developed through template-assisted hydrothermal methods. 2017, 29, 1602300 www.advancedsciencenews.com www.advmat.de porous nanowires, fabricated through hydrothermal method followed by annealing (Figure 21a,b), [271] exhibited a specific surface area of 87 m 2 g −1 with the majority of pore diameters between 5 and 10 nm. Another electrocatalyst, Co 3 O 4 Adv.…”

Section: Lithium-oxygen Batteriesmentioning

confidence: 99%

See 1 more Smart Citation

Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

Wei

Xiong²,

Shi³

et al. 2017

Advanced Materials

672

385

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Electrochemical energy storage technology is of critical importance for portable electronics, transportation and large-scale energy storage systems. There is a growing demand for energy storage devices with high energy and high power densities, long-term stability, safety and low cost. To achieve these requirements, novel design structures and high performance electrode materials are needed. Porous 1D nanomaterials which combine the advantages of 1D nanoarchitectures and porous structures have had a significant impact in the field of electrochemical energy storage. This review presents an overview of porous 1D nanostructure research, from the synthesis by bottom-up and top-down approaches with rational and controllable structures, to several important electrochemical energy storage applications including lithium-ion batteries, sodium-ion batteries, lithium-sulfur batteries, lithium-oxygen batteries and supercapacitors. Highlights of porous 1D nanostructures are described throughout the review and directions for future research in the field are discussed at the end.

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Section: Lithium-oxygen Batteriesmentioning

confidence: 99%

Section: Lithium-oxygen Batteriesmentioning

confidence: 99%

Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

Wei

Xiong²,

Shi³

et al. 2017

Advanced Materials

672

385

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“…Porous transition metal oxides, on the other hand, are characterized by their low cost and accessible porous structures. However, issues such as poor electrical conductivity, low OER activity, and limited specific capacity impact their general application in Li‐O 2 batteries …”

Section: Introductionmentioning

confidence: 99%

A Composite of Carbon‐Wrapped Mo₂C Nanoparticle and Carbon Nanotube Formed Directly on Ni Foam as a High‐Performance Binder‐Free Cathode for Li‐O₂ Batteries

Zhu

Harris

et al. 2016

Adv Funct Materials

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8514 wileyonlinelibrary.com electrolyte, and an O 2 -penetrating cathode. Though the operation of the Li-O 2 battery is based on a simple reaction (2Li + + O 2 + 2e − → Li 2 O 2 , E 0 = 2.96 V vs Li/Li + ) consisting of oxygen reduction reactions (ORR) and oxygen evolution reactions (OER), the practical application of Li-O 2 batteries is constrained by their low coulombic efficiency, poor rate capability, and especially short cycle life. [2,3] The rational design of cathode catalysts with high ORR and OER activities is of particular importance for promoting the practical application of Li-O 2 batteries. Porous carbon materials are a desirable choice due to their advantageous properties such as a wide source of raw materials, good electronic conductivity, tuneable porous structures, and high specific capacity; as a result, they are a popular choice for ORR catalysts for Li-O 2 batteries. [2,4,5] However, their poor OER activity leads to high charging potentials of over 4.5 V. These charging potentials are high enough to cause decomposing of the electrolyte and the carbon electrode, thus deteriorating the performance of the Li-O 2 battery. [6] Noble metals such as Pt and Au, and metal oxides (particularly RuO 2 ) give new insight into the design of high performance Li-O 2 battery cathodes. [7][8][9][10][11][12] These cathodes usually exhibit much higher efficiency in the Li 2 O 2 decomposition than that of carbon materials. Consequently, low charging potentials are observed (less than 4.0 V) and high cycling stability (more than 100 stable cycles) is achieved. However, the expensive raw materials, poor specific capacity, and complicated preparation procedures limit the further application of these cathode catalysts. [13] Porous transition metal oxides, on the other hand, are characterized by their low cost and accessible porous structures. However, issues such as poor electrical conductivity, low OER activity, and limited specific capacity impact their general application in Li-O 2 batteries. [14][15][16][17][18][19][20] Recently, metal carbides, particularly Mo 2 C, have received considerable attention due to their multiple valence states, high electrochemical activity, low electrical resistivity, and affordable cost. [21][22][23][24][25] Inspiring results have been reported for Mo 2 C as a cathode in Li-O 2 batteries. [26,27] Mo 2 C nanoparticle catalysts are believed to promote the formation of well-dispersed Li 2 O 2 Cathode design is indispensable for building Li-O 2 batteries with long cycle life. A composite of carbon-wrapped Mo 2 C nanoparticles and carbon nanotubes is prepared on Ni foam by direct hydrolysis and carbonization of a gel composed of ammonium heptamolybdate tetrahydrate and hydroquinone resin. The Mo 2 C nanoparticles with well-controlled particle size act as a highly active oxygen reduction reactions/oxygen evolution reactions (ORR/ OER) catalyst. The carbon coating can prevent the aggregation of the Mo 2 C nanoparticles. The even distribution of Mo 2 C nanoparticles results in the homogenous...

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“…Various types of materials including metals, [122][123][124] metal oxides, [125][126][127][128] and transition bimetallic nitrides, [ 129,130 ] have been investigated. The charge voltage of the Li-O 2 battery with these catalysts is lowered to some extent, which can benefi t the chemical stability enhancement of carbon cathode.…”

Section: Lowered Charge Voltagementioning

confidence: 99%

Recent Progress on Stability Enhancement for Cathode in Rechargeable Non‐Aqueous Lithium‐Oxygen Battery

Zhou

Liu

et al. 2015

Advanced Energy Materials

134

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Li-O 2 batteries could benefi t transportation electrifi cation and large scale renewable energy storage.The exceptionally high energy density of Li-O 2 battery mainly originates from two aspects. [ 18 ] First, oxygen, the cathode material, is sourced outside environment rather than being stored within the battery, thus helping to reduce the weight of the assembled cell; Second, during the discharge process, the lithium anode (lithium metal) can deliver an extremely high specifi c capacity (3860 mAh g −1 ) and rather low electrochemical potential (−3.04 V vs. standard hydrogen electrode, SHE), [ 19 ] ensuring a desirable discharge capacity and a high operation voltage, respectively. There are currently four types of Li-O 2 battery being investigated based on the employed electrolyte solvents: a) non-aqueous aprotic solvents, b) aqueous solvents, c) hybrid non-aqueous and aqueous solvents, and d) all solid-state solvents. [20][21][22][23][24][25][26][27][28][29] The focus of this article is exclusively on Li-O 2 batteries with non-aqueous solvents because these have dominated research efforts on Li-O 2 batteries for the past decade. For brevity, all of the Li-O 2 batteries discussed are operated with non-aqueous electrolytes. A typical rechargeable Li-O 2 battery consists of a metallic Li anode, a separator saturated with Li + conducting electrolyte, and a porous gas diffusion cathode. Upon discharge, the O 2 breathed outside is reduced on the active sites of cathode and combines with Li + to produce Li 2 O 2 ; while the direction is reversed with the peroxide oxidized to O 2 and Li + during charge. [ 2,[30][31][32][33] The electrochemical pathways described are: 2Li + O 2 ↔ Li 2 O 2 . [ 32,33 ] As witnessed over the past decade, impressive progress has been made toward the commercialization of Li-O 2 batteries. [34][35][36][37][38][39][40][41][42] For example, as a media to transfer Li + ions and O 2 molecules during the cycling of a Li-O 2 battery, the properties of the electrolyte used are demonstrated to exert a prominent effect on the performances of Li-O 2 battery. Numerous researches have been conducted in the electrolyte fi eld followed with encouraging results. [ 34 ] Simultaneously, various in situ and ex situ analysis techniques have been developed to address chemical species of reduction intermediate and fi nal products, which has aided in gaining mechanistic insights into oxygen-based electrochemistry, thus allowing for breakthroughs to be achieved for effi cient energy storage. [ 35 ] However, it should be noted that the development of this promising Li-O 2 technology is still in its infancy and to make the Li-O 2 battery suitable for practical The pressing demand on the electronic vehicles with long driving range on a single charge has necessitated the development of next-generation highenergy-density batteries. Non-aqueous Li-O 2 batteries have received rapidly growing attention due to their higher theoretical energy densities compared to those of state-of-the-art Li-ion batteries.To make them pra...

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Hierarchical Co3O4 porous nanowires as an efficient bifunctional cathode catalyst for long life Li-O2 batteries

Cited by 66 publications

References 34 publications

Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

A Composite of Carbon‐Wrapped Mo₂C Nanoparticle and Carbon Nanotube Formed Directly on Ni Foam as a High‐Performance Binder‐Free Cathode for Li‐O₂ Batteries

Recent Progress on Stability Enhancement for Cathode in Rechargeable Non‐Aqueous Lithium‐Oxygen Battery

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Hierarchical Co3O4 porous nanowires as an efficient bifunctional cathode catalyst for long life Li-O2 batteries

Cited by 66 publications

References 34 publications

Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

A Composite of Carbon‐Wrapped Mo2C Nanoparticle and Carbon Nanotube Formed Directly on Ni Foam as a High‐Performance Binder‐Free Cathode for Li‐O2 Batteries

Recent Progress on Stability Enhancement for Cathode in Rechargeable Non‐Aqueous Lithium‐Oxygen Battery

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A Composite of Carbon‐Wrapped Mo₂C Nanoparticle and Carbon Nanotube Formed Directly on Ni Foam as a High‐Performance Binder‐Free Cathode for Li‐O₂ Batteries