Self‐Healing Materials for Next‐Generation Energy Harvesting and Storage Devices

Chen, Dongdong; Wang, Dongrui; Yang, Yu; Huang, Qiyao; Zhu, Shijin; Zheng, Zijian

doi:10.1002/aenm.201700890

Cited by 228 publications

(176 citation statements)

References 149 publications

(402 reference statements)

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“…Recently there have been reports on NGs made from shape memory polymers, which provide recovery from large deformation [100] or even self-healing characteristics to cutting damage on NGs [101]. Although there are a few selfhealing NGs reported based on nanostructured materials [102], most of the attempts remain focused on certain bulk polymers, and there may scope to extend such concepts to polymer-based nanocomposites in order to further increase the energy harvesting performance. Challenges also exist in the search for other polymeric candidates, including hybrid materials that may have better piezoelectric or triboelectric properties upon combination of different materials systems.…”

Section: Discussionmentioning

confidence: 99%

Nanostructured polymer-based piezoelectric and triboelectric materials and devices for energy harvesting applications

Jing

Kar‐Narayan

2018

J. Phys. D: Appl. Phys.

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Harvesting energy from ambient mechanical sources in our environment has attracted considerable interest due to its potential to power applications such as ubiquitous wireless sensors and Internet of Things devices. In this context, piezoelectric and/or triboelectric materials offer a relatively simple means of directly converting mechanical energy from ubiquitous ambient vibrating sources into electrical power for microscale/nanoscale device applications. In particular, nanoscale energy harvesters, or nanogenerators, are capable of converting low-level ambient vibrations into electrical energy, thus are vital to the realization of the next generation of self-powered devices. Polymer-based nanogenerators are attractive as they are inherently flexible and robust, making them less prone to mechanical failure which is a key requirement for vibrational energy harvesters. They are also lightweight, easy and cheap to fabricate, lead-free and biocompatible, but in many cases their energy harvesting performance is found lacking in comparison to more commonly studied inorganic materials. Recent advances have been made in developing scalable nanofabrication techniques for flexible and low-cost polymer-based nanogenerators with improved energy conversion efficiency, including the incorporation of high-quality polymer nanowires with enhanced crystallinity, piezoelectric and/or surface charge properties. In this review, we discuss aspects of nanomaterials growth and energy harvester device design, including those involving nanowires of polymers of polyvinylidene fluoride and its co-polymers, nylon-11, and poly-lactic acid for scalable piezoelectric and triboelectric nanogenerator applications, as well as the design and performance of polymer-ceramic nanocomposite nanogenerators. In particular, we highlight the effects of growth parameters, nanoconfinement, self-poling, surface polarization, crystalline phases, and device assembly on the energy harvesting performance of a range of recently reported nanostructured polymer-based materials and devices.

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Section: Discussionmentioning

confidence: 99%

Nanostructured polymer-based piezoelectric and triboelectric materials and devices for energy harvesting applications

Jing

Kar‐Narayan

2018

J. Phys. D: Appl. Phys.

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“…Lithium‐ion batteries (LIBs), one of the most promising energy storage devices, have received much attention in the battery community owing to their high energy densities. Although some LIBs have been applied in electronics and vehicles, the development of new‐generation LIBs with higher energy density and long cyclic life is still quite challenging . One significant component in LIBs which could greatly affect the electrochemical performance of batteries is the anodic material.…”

Section: Introductionmentioning

confidence: 99%

A Quadruple‐Hydrogen‐Bonded Supramolecular Binder for High‐Performance Silicon Anodes in Lithium‐Ion Batteries

Zhang

Yang

Chen

et al. 2018

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With extremely high specific capacity, silicon has attracted enormous interest as a promising anode material for next-generation lithium-ion batteries. However, silicon suffers from a large volume variation during charge/discharge cycles, which leads to the pulverization of the silicon and subsequent separation from the conductive additives, eventually resulting in rapid capacity fading and poor cycle life. Here, it is shown that the utilization of a self-healable supramolecular polymer, which is facilely synthesized by copolymerization of tert-butyl acrylate and an ureido-pyrimidinone monomer followed by hydrolysis, can greatly reduce the side effects caused by the volume variation of silicon particles. The obtained polymer is demonstrated to have an excellent self-healing ability due to its quadruple-hydrogen-bonding dynamic interaction. An electrode using this self-healing supramolecular polymer as binder exhibits an initial discharge capacity as high as 4194 mAh g and a Coulombic efficiency of 86.4%, and maintains a high capacity of 2638 mAh g after 110 cycles, revealing significant improvement of the electrochemical performance in comparison with that of Si anodes using conventional binders. The supramolecular binder can be further applicable for silicon/carbon anodes and therefore this supramolecular strategy may increase the choice of amendable binders to improve the cycle life and energy density of high-capacity Li-ion batteries.

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“…[173] Under mechanical breaking, the supercapacitor could be healed by joining the cut sections under small pressure; the healable substrate could drag the displaced carbon nanotube layer together, thereby recovering conductivity and charge storage capability, with ≈82% of the initial capacitance restored after five cutting-healing cycles. Recently, a detailed review on healable materials was published, [176] which would provide more insights into healing materials and mechanisms for further studies in healable energy storage devices. [175] Although metal oxide and hydroxide-based healable supercapacitors have not been reported yet, to the best of authors' knowledge, from the above conceptual work, the coating of these active materials on conducting percolation networks such as carbon materials or metals followed by their dispersion on or wrapping with healable layers would enable self-healing supercapacitor forms with enhanced capacity.…”

Section: Wwwadvancedsciencecommentioning

confidence: 99%

Metal Oxide and Hydroxide–Based Aqueous Supercapacitors: From Charge Storage Mechanisms and Functional Electrode Engineering to Need‐Tailored Devices

2019

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Energy storage devices that efficiently use energy, in particular renewable energy, are being actively pursued. Aqueous redox supercapacitors, which operate in high ionic conductivity and environmentally friendly aqueous electrolytes, storing and releasing high amounts of charge with rapid response rate and long cycling life, are emerging as a solution for energy storage applications. At the core of these devices, electrode materials and their assembling into rational configurations are the main factors governing the charge storage properties of supercapacitors. Redox‐active metal compounds, particularly oxides and hydroxides that store charge via reversible valence change redox reactions with electrolyte ions, are prospective candidates to optimize the electrochemical performance of supercapacitors. To address this target, collaborative investigations, addressing different streams, from fundamental charge storage mechanisms and electrode materials engineering to need‐tailored device assemblies, are the key. Over the last few years, significant achievements in metal oxide and hydroxide–based aqueous supercapacitors have been reported. This work discusses the most recent achievements and trends in this field and brings into the spotlight the authors' viewpoints.

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Self‐Healing Materials for Next‐Generation Energy Harvesting and Storage Devices

Cited by 228 publications

References 149 publications

Nanostructured polymer-based piezoelectric and triboelectric materials and devices for energy harvesting applications

Nanostructured polymer-based piezoelectric and triboelectric materials and devices for energy harvesting applications

A Quadruple‐Hydrogen‐Bonded Supramolecular Binder for High‐Performance Silicon Anodes in Lithium‐Ion Batteries

Metal Oxide and Hydroxide–Based Aqueous Supercapacitors: From Charge Storage Mechanisms and Functional Electrode Engineering to Need‐Tailored Devices

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