Flexible fiber energy storage and integrated devices: recent progress and perspectives

Wang, Xianfu; Jiang, Kai; Shen, Guozhen

doi:10.1016/j.mattod.2015.01.002

Cited by 155 publications

(76 citation statements)

References 95 publications

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“…[1][2][3][4][5][6][7][8] However, one of the key challenges of the FSCs in the light of their practical applications is to increase their volumetric energy density to the value approaching to or even exceeding those of microbatteries without sacrificing the power density, cycle life, and other performance para meters. [1][2][3][4][5][6][7][8] However, one of the key challenges of the FSCs in the light of their practical applications is to increase their volumetric energy density to the value approaching to or even exceeding those of microbatteries without sacrificing the power density, cycle life, and other performance para meters.…”

mentioning

confidence: 99%

All‐Solid‐State Fiber Supercapacitors with Ultrahigh Volumetric Energy Density and Outstanding Flexibility

Pan

Yang

Zhang

et al. 2019

Advanced Energy Materials

222

125

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due to their mechanical flexibility in volume and shape requirement, high power density, rapid charge/discharge rate, long cycle lifetimes, and remarkable stitchability. [1][2][3][4][5][6][7][8] However, one of the key challenges of the FSCs in the light of their practical applications is to increase their volumetric energy density to the value approaching to or even exceeding those of microbatteries without sacrificing the power density, cycle life, and other performance para meters. [9][10][11][12][13][14][15] Both the energy and power density of a SC is strongly dependent on the operating voltage, that is, V 2 (E = 1/2 CV 2 and P = V 2 /4R ESR , where C is the capacitance of the device, V is the operating voltage, and R ESR is the equivalent series resistance). [16][17][18][19][20][21][22][23][24][25] Therefore, increasing the voltage window would be an effective approach to achieve highefficiency FSCs.To this end, enormous efforts have been devoted to the fabrication of asymmetric FSCs (AFSCs) which make full utilization of the operational windows of both the positive and negative electrode materials. [25][26][27][28][29][30][31][32] Nevertheless, the intrinsic characteristic voltage of water splitting (1.23 V) means that an aqueous electrolyte is limited to a potential domain of around 1 V, thus constraining the operating voltage to a maxi mum of 1.8-2.0 V, [28][29][30][31][32][33] which is indeed lower than that of Fiber supercapacitors (FSCs) represent a promising class of energy storage devices that can complement or even replace microbatteries in miniaturized portable and wearable electronics. One of their main limitations, however, is the low volumetric energy density when compared with those of rechargeable batteries. Considering the energy density of FSC is proportional to CV 2 (E = 1/2 CV 2 , where C is the capacitance and V is the operating voltage), one would explore high operating voltage as an effective strategy to promote the volumetric energy density. In the present work, an all-solid-state asymmetric FSC (AFSC) with a maximum operating voltage of 3.5 V is successfully achieved, by employing an ionic liquid (IL) incorporated gel-polymer as the electrolyte (EMIMTFSI/PVDF-HFP). The optimized AFSC is based on MnO x @TiN nanowires@carbon nanotube (NWs@CNT) fiber as the positive electrode and C@TiN NWs@CNT fiber as the negative electrode, which gives rise to an ultrahigh stack volumetric energy density of 61.2 mW h cm −3 , being even comparable to those of commercially planar lead-acid batteries (50-90 mW h cm −3 ), and an excellent flexibility of 92.7% retention after 1000 blending cycles at 90°. The demonstration of employing the ILs-based electrolyte opens up new opportunities to fabricate high-performance flexible AFSC for future portable and wearable electronic devices.

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mentioning

confidence: 99%

All‐Solid‐State Fiber Supercapacitors with Ultrahigh Volumetric Energy Density and Outstanding Flexibility

Pan

Yang

Zhang

et al. 2019

Advanced Energy Materials

222

125

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“…The basis of smart garments is the textile, and the foundation of the textile is carbon or polymer fiber, so the research into fiber is of strategic importance to smart‐garment energy storage . Peng has summarized the recent advancements in fiber‐shaped energy devices that can be woven into flexible energy textiles and highlighted the future directions on these wearable energy devices .…”

Section: Heterogeneous Nanostructures For Supercapacitorsmentioning

confidence: 99%

Heterogeneous Nanostructures for Sodium Ion Batteries and Supercapacitors

et al. 2015

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Hybridization of different electrode materials to yield favorable synergistic effects and enhanced function is a focus of current research in developing advanced electrochemical energy‐storage devices. This Focus Review summarizes recent progress in rational design and fabrication of advanced electrode materials with heterogeneous nanostructures and interfaces engineered on the nanometer scale. The hybridization typically involves two or more materials such as metal oxides (or sulfides, carbides, and nitrides) and various forms of nanostructured carbon materials. We focus on two devices: sodium ion batteries and supercapacitors, as well as their integration with other devices to realize multifunctional systems.

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“…Compared with flat‐type DSSCPSs, all of the reported wire‐type DSSCPSs are flexible and lightweight, that can be woven into many desired shapes, and thus are very promising for portable and wearable devices . Wire‐type DSSCPSs are also divided into two relatively independent parts, the PC and the ES part, which are generally connected by sharing a common fiber substrate.…”

Section: The Types Of Photo‐supercapacitorsmentioning

confidence: 99%

Recent Advances in Dual‐Functional Devices Integrating Solar Cells and Supercapacitors

Sun

Yan

2017

Solar RRL

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Although solar cell technology is an effective way to realize the utilization of solar energy, the output power of solar cells cannot be continuous and stable, due to the intermittent nature of the sunlight. Therefore, proper energy storage devices are generally required to store the generated energy of solar cells. Photo‐supercapacitor is a new energy device that combines the photoelectric conversion function of a solar cell with the energy storage capability of a supercapacitor. This dual‐functionality is the main reason why photo‐supercapacitors are receiving more and more interest for their potential applications in future portable and wearable devices. This review presents the development history and the representative research progress of various photo‐supercapacitors, as well as the problems and challenges that still need to be addressed for the construction of better photo‐supercapacitors. Finally, suggestions for future research directions and opportunities in this fascinating field are given.

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Flexible fiber energy storage and integrated devices: recent progress and perspectives

Cited by 155 publications

References 95 publications

All‐Solid‐State Fiber Supercapacitors with Ultrahigh Volumetric Energy Density and Outstanding Flexibility

All‐Solid‐State Fiber Supercapacitors with Ultrahigh Volumetric Energy Density and Outstanding Flexibility

Heterogeneous Nanostructures for Sodium Ion Batteries and Supercapacitors

Recent Advances in Dual‐Functional Devices Integrating Solar Cells and Supercapacitors

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