Advances in Manganese‐Based Oxides Cathodic Electrocatalysts for Li–Air Batteries

Bao, Liu; Sun, Yinglun; Liu, Li; Xu, Shan; Yan, Xingbin

doi:10.1002/adfm.201704973

Cited by 132 publications

(102 citation statements)

References 225 publications

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“…Nowadays, the demand for smart energy storage devices is on a rapid rise as portable electronic devices and electric vehicles become more and more popular . Among the related devices, lithium (Li) ion batteries (LIBs) dominate the market, owing to their high energy density and matured manufacturing technology .…”

Section: Introductionmentioning

confidence: 99%

A Dual Carbon‐Based Potassium Dual Ion Battery with Robust Comprehensive Performance

Zhu

Yang

et al. 2018

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Dual carbon-based potassium dual ion batteries (K-DCBs) have recently attracted ever-increasing attention owing to the potential advantages of high performance-to-cost ratio, good safety, and environmental friendliness. However, the reported K-DCBs still cannot simultaneously meet the requirements of high capacity, long cycling stability, and low cost, which are necessary for practical applications. In this study, a K-DCB with good comprehensive performance including capacity, cycling stability, medium discharge voltage, and energy density is developed by introducing the optimal cathode and anode materials, i.e., KS6 and natural graphite, respectively. An initial capacity of ≈54.6 mAh g and 92.5% capacity retention after 400 cycles can be delivered in a wide voltage window of 2.4-5.4 V at the current density of 100 mA g . A high medium discharge voltage around 4.2 V and an energy density up to 158.3 Wh kg are meanwhile delivered by the K-DCB. In addition, the working mechanism of the devices is understood in detail. It is believed that valuable contributions to the electrochemical performance improvement of the related devices toward practical applications can be provided by this study.

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Section: Introductionmentioning

confidence: 99%

A Dual Carbon‐Based Potassium Dual Ion Battery with Robust Comprehensive Performance

Zhu

Yang

et al. 2018

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“…Recent reviews focusing on development of metal oxide based oxygen electrodes for metal‐air (Lithium and Zinc‐air) battery application have extensively discussed about their crystal structure, designing strategy and chemical composition influences over their performance ,,. They explored many research interest focused on β‐MnO 2 due to the attracting properties such as thermal stability, tunnel structures, electronic conductivity, surface structure and oxidation state.…”

Section: Introductionmentioning

confidence: 99%

2D and 3D Silica‐Template‐Derived MnO₂ Electrocatalysts towards Enhanced Oxygen Evolution and Oxygen Reduction Activity

et al. 2018

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In this work, a hard‐template‐based nano‐replication process is employed to prepare mesoporous MnO2 materials. We adopted four silica materials, namely, SBA‐15, KIT‐6, MCM‐41, and MCM‐48 as templates to prepare MnO2 materials by using a nanocasting route. The structural characteristics of the resultant MnO2 materials were thoroughly investigated by using XRD, BET, FESEM, HR‐TEM, XPS, and Raman techniques. All studies confirmed the replication of porous MnO2 nanostructures from silica supports in β‐crystallographic form. By employing X‐ray absorption near‐edge structure (XANES) and extended X‐ray absorption fine structure (EXAFS), we identified the existence of Mn and oxygen vacancies in the developed MnO2 material. The hydrodynamic linear sweep voltammetric technique was employed to demonstrate the efficient oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) activity of the catalyst in 0.1 M KOH solution. The KIT‐6‐derived MnO2 nanostructure displayed equal activity to the benchmark catalyst RuO2. This work lays a foundation to prepare and employ ordered mesoporous MnO2 materials as OER/ORR catalysts, which have potential applications in electrochemical energy conversion and storage devices.

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“…All issues mentioned above primarily account for the poor electrochemical performance of rechargeable Li–O 2 batteries. The ORR and OER reactions in the cathode are generally electrochemical catalysis processes, meaning that the electrocatalyst in the cathode plays an essential role in reducing the overpotentials and improving the battery performance . Therefore, developing highly efficient electrocatalysts with rational structure is expected to ameliorate the problems and optimize the electrochemical properties of Li–O 2 batteries.…”

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confidence: 99%

“…A variety of catalysts, such as noble metals, perovskite oxides, and transition metal oxides, have been intensively studied in Li–O 2 battery systems. Among them, manganese‐based oxides are one of the most promising and favorable candidates, on account of their high ORR and OER catalytic activities and abundant reserves . Notably, Bruce and co‐workers systematically compared the catalytic performance of various manganese oxides including α‐, β‐, γ‐, λ‐MnO 2 , Mn 2 O 3 , and Mn 3 O 4 , and concluded that α‐MnO 2 is the most effective catalyst among them as the electrocatalyst for Li–O 2 batteries, delivering a capacity of 3000 mA h g −1 .…”

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confidence: 99%

3D Hollow α‐MnO₂ Framework as an Efficient Electrocatalyst for Lithium–Oxygen Batteries

Liu

Zeng

et al. 2019

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Lithium–oxygen (Li–O2) batteries are attracting more attention owing to their superior theoretical energy density compared to conventional Li‐ion battery systems. With regards to the catalytically electrochemical reaction on a cathode, the electrocatalyst plays a key role in determining the performance of Li–O2 batteries. Herein, a new 3D hollow α‐MnO2 framework (3D α‐MnO2) with porous wall assembled by hierarchical α‐MnO2 nanowires is prepared by a template‐induced hydrothermal reaction and subsequent annealing treatment. Such a distinctive structure provides some essential properties for Li–O2 batteries including the intrinsic high catalytic activity of α‐MnO2, more catalytic active sites of hierarchical α‐MnO2 nanowires on 3D framework, continuous hollow network and rich porosity for the storage of discharge product aggregations, and oxygen diffusion. As a consequence, 3D α‐MnO2 achieves a high specific capacity of 8583 mA h g−1 at a current density of 100 mA g−1, a superior rate capacity of 6311 mA h g−1 at 300 mA g−1, and a very good cycling stability of 170 cycles at a current density of 200 mA g−1 with a fixed capacity of 1000 mA h g−1. Importantly, the presented design strategy of 3D hollow framework in this work could be extended to other catalytic cathode design for Li–O2 batteries.

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Advances in Manganese‐Based Oxides Cathodic Electrocatalysts for Li–Air Batteries

Cited by 132 publications

References 225 publications

A Dual Carbon‐Based Potassium Dual Ion Battery with Robust Comprehensive Performance

A Dual Carbon‐Based Potassium Dual Ion Battery with Robust Comprehensive Performance

2D and 3D Silica‐Template‐Derived MnO₂ Electrocatalysts towards Enhanced Oxygen Evolution and Oxygen Reduction Activity

3D Hollow α‐MnO₂ Framework as an Efficient Electrocatalyst for Lithium–Oxygen Batteries

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Advances in Manganese‐Based Oxides Cathodic Electrocatalysts for Li–Air Batteries

Cited by 132 publications

References 225 publications

A Dual Carbon‐Based Potassium Dual Ion Battery with Robust Comprehensive Performance

A Dual Carbon‐Based Potassium Dual Ion Battery with Robust Comprehensive Performance

2D and 3D Silica‐Template‐Derived MnO2 Electrocatalysts towards Enhanced Oxygen Evolution and Oxygen Reduction Activity

3D Hollow α‐MnO2 Framework as an Efficient Electrocatalyst for Lithium–Oxygen Batteries

Contact Info

Product

Resources

About

2D and 3D Silica‐Template‐Derived MnO₂ Electrocatalysts towards Enhanced Oxygen Evolution and Oxygen Reduction Activity

3D Hollow α‐MnO₂ Framework as an Efficient Electrocatalyst for Lithium–Oxygen Batteries