High-Power and Ultralong-Life Aqueous Zinc-Ion Hybrid Capacitors Based on Pseudocapacitive Charge Storage

Dong, Liubing; Yang, Wang; Yang, Wu; Wang, Chengyin; Yang, Li; Xu, Chengjun; Wan, Shuwei; He, Fan; Kang, Feiyu; Wang, Guoxiu

doi:10.1007/s40820-019-0328-3

Cited by 129 publications

(70 citation statements)

References 40 publications

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“…4c, d) and XRD analysis (Fig. 4g, h) [18,43]. The acceptable cycling stability of the aqueous ZHC at moderate current density benefits from the unique 3D hierarchical porous structure of the kelp-carbon and ample unimpeded pathways (interconnected cell walls and interpenetrating quadrilateral/pentagon-like channels) available for rapid electron and ion transport (Fig.…”

Section: Electrochemical Properties Of the Aqueous Zhcsmentioning

confidence: 98%

Printable Zinc-Ion Hybrid Micro-Capacitors for Flexible Self-Powered Integrated Units

et al. 2020

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Wearable self-powered systems integrated with energy conversion and storage devices such as solar-charging power units arouse widespread concerns in scientific and industrial realms. However, their applications are hampered by the restrictions of unbefitting size matching between integrated modules, limited tolerance to the variation of input current, reliability, and safety issues. Herein, flexible solar-charging self-powered units based on printed Zn-ion hybrid micro-capacitor as the energy storage module is developed. Unique 3D micro-/nano-architecture of the biomass kelp-carbon combined with multivalent ion (Zn2+) storage endows the aqueous Zn-ion hybrid capacitor with high specific capacity (196.7 mAh g−1 at 0.1 A g−1). By employing an in-plane asymmetric printing technique, the fabricated quasi-solid-state Zn-ion hybrid micro-capacitors exhibit high rate, long life and energy density up to 8.2 μWh cm−2. After integrating the micro-capacitor with organic solar cells, the derived self-powered system presents outstanding energy conversion/storage efficiency (ηoverall = 17.8%), solar-charging cyclic stability (95% after 100 cycles), wide current tolerance, and good mechanical flexibility. Such portable, wearable, and green integrated units offer new insights into design of advanced self-powered systems toward the goal of developing highly safe, economic, stable, and long-life smart wearable electronics.

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Section: Electrochemical Properties Of the Aqueous Zhcsmentioning

confidence: 98%

Printable Zinc-Ion Hybrid Micro-Capacitors for Flexible Self-Powered Integrated Units

et al. 2020

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“…5e, Ca-900 electrode is the highest at all scan rates, which is also consistent with its best electrochemical performance. Zinc-ion hybrid supercapacitors (ZHSs) have received extensive attentions owing to the rich zinc sources, low cost, and high safety 22,31 . The negative electrode material for ZHSs is usually a carbon-based material with a high specific surface area 32,33 .…”

Section: Electrochemical Performancementioning

confidence: 99%

“…Among them, aqueous Znion hybrid supercapacitor (ZHS) is a newly-emerged energy storage device, which is usually composed of zinc metal anode and carbon-based cathode. ZHS is considered as one of the most attractive energy storage devices by combining the merits of batteries and supercapacitors [19][20][21][22] . For instance, Zhang et al 21…”

Section: Introductionmentioning

confidence: 99%

Ultrathin carbon nanosheets for highly efficient capacitive K-ion and Zn-ion storage

Zhang

Wang

et al. 2020

J. Mater. Chem. A

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“…As known, conventional ZIMSCs 99,103,105,108 with sandwich configuration store the energy through both the Faradaic redox reactions on the surface of anode (Zn/Zn 2+ ) and the formation of electric double layers with electrolyte ions on the cathode. To improve the capability of storing energy, 2D hierarchically nanostructured zinc metal (2D‐Zn) was electrodeposited onto the surface of the carbon fiber by voltage‐tailored electrodeposition.…”

Section: Zinc Ion Microsupercapacitorsmentioning

confidence: 99%

Zinc based micro‐electrochemical energy storage devices: Present status and future perspective

Wang

2020

EcoMat

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In order to keep rapid pace with increasing demand of wearable and miniature electronics, zinc‐based microelectrochemical energy storage devices (MESDs), as a promising candidate, have gained increasing attention attributed to low cost, environmental benign, and high performance. Herein, this review summarizes the state‐of‐the‐art advances of zinc‐based MESDs in microbatteries (MBs) and microsupercapacitors and highlights merits of cost effectiveness and high performance for miniaturized smart integrated systems. First, an introduction is given to present importance of zinc‐based MESDs. Second, current status with representative fiber, in‐plane and sandwiched configurations are illustrated in detail, particularly with a focus on the reasonable construction of multifunctional MBs and microsupercapacitors and deep understanding of energy storage mechanisms. Then, achievements for smart systems are overviewed to highlight environmental adaptability, integratable properties, and scalability in targeting applications. Finally, critical perspectives and challenges on the synergistic optimization of whole device are discussed to demonstrate forward‐looking developmental directions of zinc‐based MESDs.

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High-Power and Ultralong-Life Aqueous Zinc-Ion Hybrid Capacitors Based on Pseudocapacitive Charge Storage

Cited by 129 publications

References 40 publications

Printable Zinc-Ion Hybrid Micro-Capacitors for Flexible Self-Powered Integrated Units

Printable Zinc-Ion Hybrid Micro-Capacitors for Flexible Self-Powered Integrated Units

Ultrathin carbon nanosheets for highly efficient capacitive K-ion and Zn-ion storage

Zinc based micro‐electrochemical energy storage devices: Present status and future perspective

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