Al-doped α-MnO2 for high mass-loading pseudocapacitor with excellent cycling stability

Hu, Zhimi; Xu, Xiao; Chen, Chi; Li, Tianqi; Huang, Liang; Zhang, Chuanfang; Su, Jun; Liu, Miao; Jiang, Jianjun; Zhang, Yanrong; Zhou, Jun

doi:10.1016/j.nanoen.2014.10.015

Cited by 190 publications

(112 citation statements)

References 40 publications

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“…Due to the similarity of the Al 3+ and Mn 4+ atomic radius, aluminum can substitute Mn or be located in tunnel of α -MnO 2 . Hu et al [140] showed that Al-doped α -MnO 2 nanoneedles prepared by the hydrothermal method using K-free precursors and Al 2 (SO 4 ) 3 ·18H 2 O as dopant reagent were beneficial for pseudocapacitor electrode application with a specific capacitance of 213 F·g −1 . Zn-doped MnO 2 nanoparticles (high surface area ~46 m 2 ·g −1 ) were prepared by precipitation of KMnO 4 and metal acetates with heat treatment of the precipitate at 400 °C for 3 h [141].…”

Section: Doped-mno2 Materialsmentioning

confidence: 99%

Nanostructured MnO2 as Electrode Materials for Energy Storage

2017

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Manganese dioxides, inorganic materials which have been used in industry for more than a century, now find great renewal of interest for storage and conversion of energy applications. In this review article, we report the properties of MnO2 nanomaterials with different morphologies. Techniques used for the synthesis, structural, physical properties, and electrochemical performances of periodic and aperiodic frameworks are discussed. The effect of the morphology of nanosized MnO2 particles on their fundamental features is evidenced. Applications as electrodes in lithium batteries and supercapacitors are examined.

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Section: Doped-mno2 Materialsmentioning

confidence: 99%

Nanostructured MnO2 as Electrode Materials for Energy Storage

2017

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“…To solve this problem, people must develop efficient energy storage devices. 8,9 As 65 with all other devices, performances of energy storage and conversion devices to a large extent depend on the materials they employ. [1][2][3][4] Supercapacitors, also known as electrochemical capacitors (ECs), have attracted sizable attention because of their huge 55 potential for application in portable electronic devices, hybrid electric vehicles and transportation, because they provide higher power densities than conventional batteries and possess reliable cycling stability.…”

Section: Introductionmentioning

confidence: 99%

Composite of hierarchical interpenetrating 3D hollow carbon skeleton from lotus pollen and hexagonal MnO₂ nanosheets for high-performance supercapacitors

Liu

Wang

et al. 2015

J. Mater. Chem. A

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Numerous novel materials for next-generation energy storage and conversion devices have been prepared through simple and green methods to meet the urgent requirement for sustainable development. In this regard, lotus pollen, which is a cheap and common biomass waste, can be used as a potential carbon 10 source for developing efficient electrode materials with a unique structure for high-performance supercapacitors. Following this aim, we successfully prepared hierarchical and interpenetrating threedimensional (3D) hollow MnO 2 /C composite via a facile and rapid dipping method, employing renewable, cost-effective and widespread natural porous lotus pollen as both the skeleton and carbon source. Benefiting from the synergistic effect between manganese dioxide and porous carbon matrix, the 15 composite has a high specific capacitance of 257 F/g at a current density of 0.5 A/g and high energy density of 51.5 Wh/kg. In addition, the prepared composite exhibits good cycle stability even after 2000 charge/discharge cycles. The approach developed in this work directs the way to take full advantage of sustainable resources provided by nature, and opens up a novel route to design and prepare highperformance materials with greater potential application in high-performance energy storage systems. 20

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“…Whereas previous studies of nickel oxide have been focused on cation intercalation, the surface processes-based mechanism presented here offers a new paradigm for designing and developing electrochromic and energy storage devices. For supercapacitor application, manganese oxide (MnO x ) has significant advantages, such as abundant resource, low cost, easy fabrication procedure and high theoretical specific capacitance [63][64][65][66][67][68]. Meanwhile, the redox processes induce changes in the UV-visible absorption spectra of MnO 2 electrodes, exhibiting anodic electrochromism [69,70].…”

Section: Figurementioning

confidence: 99%

Electrochromic energy storage devices

2016

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Energy storage devices with the smart function of changing color can be obtained by incorporating electrochromic materials into battery or supercapacitor electrodes. In this review, we explain the working principles of supercapacitors, batteries, and electrochromic devices. In addition, we discuss the material candidates for electrochromic energy storages in detail. The challenges of the integrated electrochromic energy system for simultaneous realization of electrochromism and energy storage are specially highlighted.

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Al-doped α-MnO2 for high mass-loading pseudocapacitor with excellent cycling stability

Cited by 190 publications

References 40 publications

Nanostructured MnO2 as Electrode Materials for Energy Storage

Nanostructured MnO2 as Electrode Materials for Energy Storage

Composite of hierarchical interpenetrating 3D hollow carbon skeleton from lotus pollen and hexagonal MnO₂ nanosheets for high-performance supercapacitors

Electrochromic energy storage devices

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Al-doped α-MnO2 for high mass-loading pseudocapacitor with excellent cycling stability

Cited by 190 publications

References 40 publications

Nanostructured MnO2 as Electrode Materials for Energy Storage

Nanostructured MnO2 as Electrode Materials for Energy Storage

Composite of hierarchical interpenetrating 3D hollow carbon skeleton from lotus pollen and hexagonal MnO2 nanosheets for high-performance supercapacitors

Electrochromic energy storage devices

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Product

Resources

About

Composite of hierarchical interpenetrating 3D hollow carbon skeleton from lotus pollen and hexagonal MnO₂ nanosheets for high-performance supercapacitors