Optimized orbital occupancy of transition metal in spinel Ni-Co oxides with heteroatom doping for Aprotic Li-O2 battery

Ren, Long‐Fei; Zheng, Ruixin; Du, Dongxing; Yan, Yu; He, Miao; Ran, Zhiqun; Li, Minglu; Shu, Chaozhu

doi:10.1016/j.cej.2021.132977

Cited by 52 publications

(39 citation statements)

References 52 publications

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“…278 cycles [19] Pt-Pd-Au-Ru 9,130 mAh g -1 at a current density of 100 mA g -1 20 cycles at a current density of 500 mA g -1 [80] Co/Fe@NC 17,326 mAh g -1 at a current density of 125 mA g -1 250 cycles [81] CoFeCe 12,340 mAh g -1 at a current density of 100 mA g -1 over 2,900 h [20] NiCoFeO@NF 16,727 mAh g -1 at a current density of 500 mA g -1 over 790 h [82] Carbon material…”

Section: Oxygen Cathodementioning

confidence: 99%

“…Due to the high price and scarcity of resources, the widespread use of precious metals is limited, while other transition metals with relatively inexpensive costs and good catalytic activity have been studied. Li et al developed an organic bimetallic coordination polymer based on Co and Fe [Figure 10B] in the form of rodlike N-doped carbon (Co/Fe@NC) coated with Co and Fe nanoparticles that were employed as a cathode catalyst for LOBs [81] . The rod of N-doped carbon not only improves conductivity but also provides rich pores for the diffusion of Li + and O 2 .…”

Section: Metals and Metal Oxidesmentioning

confidence: 99%

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Recent strategies for improving the performances of rechargeable lithium batteries with sulfur- and oxygen-based conversion cathodes

Ren¹,

Fan²,

Fu³

2023

Energy Mater

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The energy density of lithium-ion batteries based on intercalated electrode materials has reached its upper limit, which makes it challenging to meet the growing demand for high-energy storage systems. Electrode materials based on conversion reactions such as sulfur, organosulfides, and oxygen involving breakage and reformation of chemical bonds can provide higher specific capacity and energy density. In addition, they usually consist of abundant elements, making them renewable. Although they have the aforementioned benefits, they face numerous challenges for practical applications. For example, the cycled products of sulfur and molecular organosulfides could be soluble in a liquid electrolyte, resulting in the shuttle effect and significant capacity loss. The discharged product of oxygen is Li2O2, which could result in high charge overpotential and decomposition of the electrolyte. In this review, we present an overview of the current strategies for improving the performances of lithium-sulfur, lithium-organosulfide, and lithium-oxygen batteries. First, we summarize the efforts to overcome the issues facing sulfur and organosulfide cathodes, as well as the strategies to increase the capacity of organosulfides. Then, we introduce the latest research progress on catalysts in lithium-oxygen batteries. Finally, we summarize and provide outlooks for the conversion of electrode materials.

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Section: Oxygen Cathodementioning

confidence: 99%

Section: Metals and Metal Oxidesmentioning

confidence: 99%

Recent strategies for improving the performances of rechargeable lithium batteries with sulfur- and oxygen-based conversion cathodes

Ren¹,

Fan²,

Fu³

2023

Energy Mater

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“…Designing a specific exposed crystal plane is an excellent strategy to construct an active surface with various atomic arrangements, atom steps, coordination states, dangling bonds, and surface energies. − Some simple oxides such as Cu 2 O and MoO 3 were employed for LOBs. Liu et al proposed the method of cyclic scanning electrodeposition, in which the thin copper film was turned into a Cu 2 O concave octahedron sealed by the 24 {344} high-exponential crystal plane and had a high yield.…”

Section: Introductionmentioning

confidence: 99%

Water-Induced Surface Reconstruction of Co₃O₄ on the (111) Plane for High-Efficiency Li–O₂ Batteries in a Hybrid Electrolyte

Zhang

Gao

Chen

et al. 2022

ACS Appl. Mater. Interfaces

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The crystal plane effect of cobalt oxide has attracted much attention in Li–O2 batteries (LOBs) and other electrocatalytic fields. However, boosting the catalytic activity of a specific plane still faces significant challenges. Herein, a strategy of adding water into the electrolyte is developed to construct a LiOH-based Li–O2 battery system using the (111) plane-exposed Co3O4 as a cathode catalyst. The electrochemical performance shows that on the (111) plane, in the presence of water, the overpotential is largely reduced from 1.5 to 1.0 V and the cycling performance is enhanced. It is confirmed that during the discharge process, water reacts to form LiOH and induce the phase transformation of Co3O4 to amorphous CoO x (OH) y . At the recharge stage, LiOH is first decomposed and then CoO x (OH) y is reduced to Co3O4. Compared with pristine (111), the newly formed Co3O4 surface exhibits more active sites, which accelerates the following oxygen reduction and oxygen evolution processes. This work not only reveals the reaction mechanism of water-induced reaction on the (111) plane of Co3O4 but also provides a new perspective for further design of hybrid Li–O2 batteries with a low polarization and a longer cycle life.

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“…[1,2] Theoretically, the challenge of Li-O 2 battery lies in the sluggish kinetics of oxygen evolution reaction (OER) and oxygen reduction reaction (ORR), which seriously distracts the practical application of this energy storage and conversion system. [3][4][5][6] Therefore, reasonable design of the cathode catalyst to inhibit side reactions, improve cyclic stability, and reduce the reaction energy barrier is the key for the further development of Li-O 2 battery. [7] Currently, noble metal-based catalysts are believed as the mainstream electrocatalysts, whereas the poor bifunctionality and low reserves impede the large-scale commercial applications.…”

Section: Introductionmentioning

confidence: 99%

Adjusting the 3d Orbital Occupation of Ti in Ti₃C₂ MXene via Nitrogen Doping to Boost Oxygen Electrode Reactions in Li–O₂ Battery

Zheng

et al. 2022

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Rationally designing efficient catalysts is the key to promote the kinetics of oxygen electrode reactions in lithium‐oxygen (Li‐O2) battery. Herein, nitrogen‐doped Ti3C2 MXene prepared via hydrothermal method (N‐Ti3C2(H)) is studied as the efficient Li‐O2 battery catalyst. The nitrogen doping increases the disorder degree of N‐Ti3C2(H) and provides abundant active sites, which is conducive to the uniform formation and decomposition of discharge product Li2O2. Besides, density functional theory calculations confirm that the introduction of nitrogen can effectively modulate the 3d orbital occupation of Ti in N‐Ti3C2(H), promote the electron exchange between Ti 3d orbital and O 2p orbital, and accelerate oxygen electrode reactions. Specifically, the N‐Ti3C2(H) based Li‐O2 battery delivers large discharge capacity (11 679.8 mAh g−1) and extended stability (372 cycles). This work provides a valuable strategy for regulating 3d orbital occupancy of transition metal in MXene to improve the catalytic activity of oxygen electrode reactions in Li‐O2 battery.

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Optimized orbital occupancy of transition metal in spinel Ni-Co oxides with heteroatom doping for Aprotic Li-O2 battery

Cited by 52 publications

References 52 publications

Recent strategies for improving the performances of rechargeable lithium batteries with sulfur- and oxygen-based conversion cathodes

Recent strategies for improving the performances of rechargeable lithium batteries with sulfur- and oxygen-based conversion cathodes

Water-Induced Surface Reconstruction of Co₃O₄ on the (111) Plane for High-Efficiency Li–O₂ Batteries in a Hybrid Electrolyte

Adjusting the 3d Orbital Occupation of Ti in Ti₃C₂ MXene via Nitrogen Doping to Boost Oxygen Electrode Reactions in Li–O₂ Battery

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Optimized orbital occupancy of transition metal in spinel Ni-Co oxides with heteroatom doping for Aprotic Li-O2 battery

Cited by 52 publications

References 52 publications

Recent strategies for improving the performances of rechargeable lithium batteries with sulfur- and oxygen-based conversion cathodes

Recent strategies for improving the performances of rechargeable lithium batteries with sulfur- and oxygen-based conversion cathodes

Water-Induced Surface Reconstruction of Co3O4 on the (111) Plane for High-Efficiency Li–O2 Batteries in a Hybrid Electrolyte

Adjusting the 3d Orbital Occupation of Ti in Ti3C2 MXene via Nitrogen Doping to Boost Oxygen Electrode Reactions in Li–O2 Battery

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Product

Resources

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Water-Induced Surface Reconstruction of Co₃O₄ on the (111) Plane for High-Efficiency Li–O₂ Batteries in a Hybrid Electrolyte

Adjusting the 3d Orbital Occupation of Ti in Ti₃C₂ MXene via Nitrogen Doping to Boost Oxygen Electrode Reactions in Li–O₂ Battery