Layered Ca0.28MnO2·0.5H2O as a High Performance Cathode for Aqueous Zinc‐Ion Battery

Sun, Taolei; Nian, Qingshun; Zheng, Shibing; Shi, Jinqiang; Tao, Zhanliang

doi:10.1002/smll.202000597

Cited by 174 publications

(108 citation statements)

References 41 publications

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“…As shown in the insert of Figure 1A, in the crystal structure of δ-MnO 2 , K + ions and H 2 O molecules reside in the interlayer space of MnO 6 layers. The pre-intercalated K + ions and H 2 O molecules can act as pillars to expand the interlayer distance and improve the structural stability (Wang et al, 2019b;Sun et al, 2020). The detailed valence states of Mn and C elements were investigated through XPS analysis.…”

Section: Resultsmentioning

confidence: 99%

Hybridizing δ-Type MnO2 With Lignin-Derived Porous Carbon as a Stable Cathode Material for Aqueous Zn–MnO2 Batteries

et al. 2020

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With the advantages of intrinsic safety, low price, high output potential, and acceptable energy density, aqueous rechargeable Zn-MnO 2 batteries are gradually emerging as promising energy storage devices in recent years. Unfortunately, the structural instability and poor electrical conductivity of manganese dioxides still hinder their further applications. To tackle these issues, we demonstrate a high-performance cathode material for Zn-MnO 2 batteries by hybridizing lignin-derived porous carbon with δ-MnO 2 (denoted as LPC/δ-MnO 2). Benefiting from the high electrical conductivity of porous carbon, the LPC/δ-MnO 2 cathode material can offer high discharge capacity of 332.3 mAh g −1 at 0.2 A g −1 and excellent high-rate capability (196.1 mAh g −1 at 5 A g −1). Meanwhile, the assembled Zn-MnO 2 battery displays good long-term cycling stability (82% capacity retention after 1000 cycles). Such superior performances are attributed to the synergetic effect of nanostructured δ-MnO 2 and porous carbon scaffold, which is in favor of rapid Zn 2+ ion diffusion and large contribution ratio of pseudocapacitive Zn 2+ ion intercalation. The results of this study show great prospects of hybridizing biomass-derived carbon framework with electrochemically active materials toward advanced energy storage materials.

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Section: Resultsmentioning

confidence: 99%

Hybridizing δ-Type MnO2 With Lignin-Derived Porous Carbon as a Stable Cathode Material for Aqueous Zn–MnO2 Batteries

et al. 2020

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Section: Defect Engineering On Manganese‐based Oxidesmentioning

confidence: 99%

“…Sun and co‐workers preinserted Ca 2+ and water into layered δ‐MnO 2 to act as pillars. [ 85 ] It was reported that the incorporation of hydrated Ca 2+ could expand the interlayer spacing and stabilize the layered structure of Ca 0.28 MnO 2 ·0.5H 2 O. As such, this resulted in a significantly improved reversible insertion/extraction stability of Zn 2+ .…”

Section: Defect Engineering On Manganese‐based Oxidesmentioning

confidence: 99%

“…[ 75 ] Similarly, Sun et al prepared Ca 2+ and water stabilized Ca 0.28 MnO 2 ·0.5H 2 O using a simple one step hydrothermal method. [ 85 ] Recently, Ce‐doped MnO 2 nanorod was fabricated though a one‐step hydrothermal route and applied as ZIBs cathode. [ 88 ] Also, the different polymorphs of MnO 2 nanostructures (α, β, γ, and δ) with copper doping could also be achieved by hydrothermal methods via tuning the reaction time, temperature, and reactants.…”

Section: Defect Engineering On Manganese‐based Oxidesmentioning

confidence: 99%

“…Sun et al reported a Ca 2+ ions and water‐stabilized δ‐MnO 2 (Ca 0.28 MnO 2 ·0.5H 2 O) cathode for aqueous ZIB. [ 85 ] Ca ion and H 2 O as pillars preinserting into layered δ‐MnO 2 could significantly improve the reversibility of Zn 2+ insertion/extraction behavior in Mn‐based layered material. Also, the preintercalation of Ca 2+ ions and H 2 O in δ‐MnO 2 could offer more cushion to relieve the strain from the Zn 2+ /H + insertion/extraction along with rapid reaction and high ion diffusion kinetics.…”

Section: Defect Engineering On Manganese‐based Oxidesmentioning

confidence: 99%

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Defect Engineering in Manganese‐Based Oxides for Aqueous Rechargeable Zinc‐Ion Batteries: A Review

Xiong

Zhang

Lee

et al. 2020

Advanced Energy Materials

313

150

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The development of advanced cathode materials for aqueous the zinc ion battery (ZIB) represents a crucial step toward building future large‐scale green energy conversion and storage systems. Recently, significant progress has been achieved in the development of manganese‐based oxides for ZIB via defect engineering, whereby the intrinsic capacity and energy density have been enhanced. In this review, an overview of the recent progress in the defect engineering of manganese‐based oxides for aqueous ZIBs is summarized in the following order: 1) the structures and properties of the commonly used manganese‐based oxides, 2) the classification of the various types of defect engineering commonly reported, 3) the various strategies used to create defects in materials, and 4) the effects of the various types of defect engineering on the electrochemical performance of manganese‐based oxides. Finally, a perspective on the defect engineering of manganese‐based oxides is proposed to further enhance their electrochemical performance as a ZIB cathode.

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Interlayer Chemistry of Layered Electrode Materials in Energy Storage Devices

Zhang

Ang

Yang

et al. 2020

Adv Funct Materials

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With the constant focus on energy storage devices, layered materials are ideal electrodes for the new generation of highly efficient secondary ion batteries and supercapacitors due to their flexible 2D structures and high theoretical capacities. However, the small interlayer distances in layered electrode materials and the strong Columbic interactions between the working ions and host lattice anions cause slow ion diffusion. In addition, structural collapse during repeated ion insertion and extraction reduces the cycling lifetime. As such, interlayer engineering strategies are effective approaches to optimize ion transmission kinetics and structural integrity. In view of the latest research on the interlayer engineering of layered materials, this review will discuss useful strategies to improve electrode performance. The synthetic strategies, characterization techniques, and effects of interlayer‐engineered layered materials, including metal oxides, metal sulfides, carbonous materials, and MXenes, are discussed in detail. The future outlook and challenges for interlayer engineering are also presented, which may pave the way for the development of new layered materials.

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Layered Ca_0.28MnO₂·0.5H₂O as a High Performance Cathode for Aqueous Zinc‐Ion Battery

Cited by 174 publications

References 41 publications

Hybridizing δ-Type MnO2 With Lignin-Derived Porous Carbon as a Stable Cathode Material for Aqueous Zn–MnO2 Batteries

Hybridizing δ-Type MnO2 With Lignin-Derived Porous Carbon as a Stable Cathode Material for Aqueous Zn–MnO2 Batteries

Defect Engineering in Manganese‐Based Oxides for Aqueous Rechargeable Zinc‐Ion Batteries: A Review

Interlayer Chemistry of Layered Electrode Materials in Energy Storage Devices

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