Achieving high-energy-density and ultra-stable zinc-ion hybrid supercapacitors by engineering hierarchical porous carbon architecture

Yu, Peifeng; Zeng, Yuan; Zeng, Yinxiang; Dong, Hanwu; Hu, Hang; Liu, Yingliang; Zheng, Mingtao; Xiao, Yong; Lu, Xihong; Liang, Yeru

doi:10.1016/j.electacta.2019.134999

Cited by 121 publications

(64 citation statements)

References 64 publications

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“…27 B, Schematic preparation of hierarchical porous carbon (HPC). Reproduced with permission: Copyright 2019, Elsevier 31 tube structure can serve as an electrolyte buffer tank to facilitate rapid ion transport, both conducive to power density and rate performance. However, the low-density and specific surface area of CNTs limit their volume capacitance, and it is difficult to realize a high mass loading using traditional electrode preparation methods.…”

Section: Porous Carbonmentioning

confidence: 99%

“…Some studies claim anions in the electrolyte would be adsorbed on the surface of the carbon‐positive electrode during charging and released from the electrode surface into the electrolyte during discharging 27‐29 (Figure 1A and Equation ). Others consider Zn 2+ as charge carriers 30‐32 that are desorbed during charging and adsorbed during discharging (Figure 1B and Equation ). In addition, the carbon‐positive electrode can introduce rapid redox reactions at/near the surface, especially those containing abundant oxygen functional groups or doped with heteroatoms, and is capable of increasing the capacitance of ZHSCs by providing additional pseudocapacitance (Equation ) 27,33‐35 …”

Section: Introductionmentioning

confidence: 99%

“…Table 1 summarizes the electrochemical performance of the stateof-the-art carbonaceous electrodes for the construction of ZHSCs. [26][27][28][29][30][31][32]39,[45][46][47][48][49][50][51][52][53][54][55][56] A number of methods have been reported to enhance the physical or chemical adsorption to a carbon-positive electrode, including adjustment of morphology, 56 construction of a hierarchical porous structure, 32 and introduction of heteroatomic dopants 51 or functional oxygen groups. 57 Briefly, despite some exciting achievements, the capacity of the most cutting-edge carbon still fails to match the extremely high theoretical capacity of Zn electrodes, making the overall performance of the ZHSC devices utterly disappointing.…”

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confidence: 99%

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Recent progress and challenges of carbon materials for Zn‐ion hybrid supercapacitors

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Zinc-ion hybrid supercapacitors (ZHSCs) have garnered increasing attention as promising energy storage devices in recent years, as they combine the advantages of high-energy Zn-ion batteries and high-power supercapacitors. However, the development of ZHSCs is still in its infancy and there are many bottlenecks to overcome. In particular, the challenge induced by the limited ion adsorption capability of carbon-positive electrodes severely restricts the energy density of ZHSCs. Therefore, it has become a key issue to design novel carbon-positive electrodes that enable high energy density yet do not deteriorate the intrinsic power capability and long-term durability. This study focuses on recent achievements in synthesis, morphology, and electrochemical performance of various carbon materials applied in ZHSCs. The modification strategies to optimize their electrochemical performance are briefly summarized. In addition, current challenges and future opportunities in this field are also outlined. This review will be beneficial to provide an organized framework for the research systems of carbon-positive electrodes and develop novel ZHSCs with high energy density.

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Section: Porous Carbonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Recent progress and challenges of carbon materials for Zn‐ion hybrid supercapacitors

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“…The key object of the development of HCs is to improve energy densities of supercapacitors to fill the energy gap between batteries and conventional capacitors and bring them closer to electrochemical batteries. A study by Peifeng, et al developed a zinc-ion hybrid supercapacitor by producing zinc/carbon composites using a well-connected high specific surface area (SSA) fine-tuned hierarchical porous architecture where the well-engineered architect provided active sites for the zinc-ion storage resulting in an excellent energy density of 118 Wh kg -1 and outstanding cycling stability of over 94.9% after 20,000 cycles [35]. An alternative approach to produce HCs with high capacitive performance is by using composites of more than two active materials.…”

Section: Hybrid-capacitors (Hcs)mentioning

confidence: 99%

Current State and Future Prospects for Electrochemical Energy Storage and Conversion Systems

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Electrochemical energy storage and conversion systems such as electrochemical capacitors, batteries and fuel cells are considered as the most important technologies proposing environmentally friendly and sustainable solutions to address rapidly growing global energy demands and environmental concerns. Their commercial applications individually or in combination of two or more devices are based on their distinguishing properties e.g., energy/power densities, cyclability and efficiencies. In this review article, we have discussed some of the major electrochemical energy storage and conversion systems and encapsulated their technological advancement in recent years. Fundamental working principles and material compositions of various components such as electrodes and electrolytes have also been discussed. Furthermore, future challenges and perspectives for the applications of these technologies are discussed.

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“…Aqueous zinc-ion hybrid supercapacitors (ZHSs) have recently emerged as promising energy storage devices, due to the intrinsic advantages of the zinc element, such as a high capacity of 820 mAh/g in theory, low redox potential of −0.76 V vs. a standard hydrogen electrode (Ma et al, 2018;Chen et al, 2019a;Yu et al, 2019). For instance, Ma et al (2019) have developed a ZHS with a γ-phase MnO 2 nanorods as a cathode and activated carbon particles as an anode, which demonstrated a high specific capacity of 54.1 mAh/g (34.8 Wh/kg) at 0.1 A/g current density.…”

Section: Introductionmentioning

confidence: 99%

Hollow Mesoporous Carbon Spheres for High Performance Symmetrical and Aqueous Zinc-Ion Hybrid Supercapacitor

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Zinc-ion hybrid supercapacitors are a promising energy storage device as they simultaneously combine the high capacity of batteries and the high power of supercapacitors. However, the practical application of Zinc-ion hybrid supercapacitors is hindered by insufficient energy density and poor rate performance. In this study, a symmetrical zinc-ion hybrid supercapacitor device was constructed with hollow mesoporous-carbon nanospheres as electrode materials, and aqueous ZnSO 4 adopted as an electrolyte. Benefiting from the mesoporous structure and high specific area (800 m 2 /g) of the hollow carbon nanospheres, fast capacitor-type ion adsorption/de-adsorption on both the cathode and the anode can be achieved, as well as additional battery-type Zn/Zn 2+ electroplating/stripping on the anode. This device thus demonstrates outstanding electrochemical performance, with high capacity (212.1 F/g at 0.2 A/g), a high energy density (75.4 Wh/kg at 0.16 kW/kg), a good rate performance (34.2 Wh/kg energy density maintained at a high power density of 16.0 kW/kg) and excellent cycling stability with 99.4% capacitance retention after 2,500 cycles at 2 A/g. The engineering of this new configuration provides an extremely safe, high-rate, and durable energy-storage device.

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Achieving high-energy-density and ultra-stable zinc-ion hybrid supercapacitors by engineering hierarchical porous carbon architecture

Cited by 121 publications

References 64 publications

Recent progress and challenges of carbon materials for Zn‐ion hybrid supercapacitors

Recent progress and challenges of carbon materials for Zn‐ion hybrid supercapacitors

Current State and Future Prospects for Electrochemical Energy Storage and Conversion Systems

Hollow Mesoporous Carbon Spheres for High Performance Symmetrical and Aqueous Zinc-Ion Hybrid Supercapacitor

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