High‐Performance Piezocomposite Energy Harvesters by Constructing Bionic Ion Channels

2020 ◽  
Vol 5 (5) ◽  
pp. 2000050 ◽  
Author(s):  
Cheng Li ◽  
Ying Yang ◽  
Yanxiao Wu ◽  
Xiaoming Tao ◽  
Wei Chen
Keyword(s):  
Ion Channels ◽  
High Performance ◽  
Energy Harvesters

Electrostatic bellow muscle actuators and energy harvesters that stack up

2021 ◽  
Vol 6 (51) ◽  
pp. eaaz5796
Author(s):  
I. D. Sîrbu ◽  
G. Moretti ◽  
G. Bortolotti ◽  
M. Bolignari ◽  
S. Diré ◽  
...  
Keyword(s):  
High Performance ◽  
High Reliability ◽  
Low Cost ◽  
Artificial Muscle ◽  
Pressure Head ◽  
Robotic Systems ◽  
Maximum Pressure ◽  
Term Operation ◽  
Energy Harvesters ◽  
Out Of Plane

Future robotic systems will be pervasive technologies operating autonomously in unknown spaces that are shared with humans. Such complex interactions make it compulsory for them to be lightweight, soft, and efficient in a way to guarantee safety, robustness, and long-term operation. Such a set of qualities can be achieved using soft multipurpose systems that combine, integrate, and commute between conventional electromechanical and fluidic drives, as well as harvest energy during inactive actuation phases for increased energy efficiency. Here, we present an electrostatic actuator made of thin films and liquid dielectrics combined with rigid polymeric stiffening elements to form a circular electrostatic bellow muscle (EBM) unit capable of out-of-plane contraction. These units are easy to manufacture and can be arranged in arrays and stacks, which can be used as a contractile artificial muscle, as a pump for fluid-driven soft robots, or as an energy harvester. As an artificial muscle, EBMs of 20 to 40 millimeters in diameter can exert forces of up to 6 newtons, lift loads over a hundred times their own weight, and reach contractions of over 40% with strain rates over 1200% per second, with a bandwidth over 10 hertz. As a pump driver, these EBMs produce flow rates of up to 0.63 liters per minute and maximum pressure head of 6 kilopascals, whereas as generator, they reach a conversion efficiency close to 20%. The compact shape, low cost, simple assembling procedure, high reliability, and large contractions make the EBM a promising technology for high-performance robotic systems.

Selective current collecting design for spring-type energy harvesters

RSC Advances ◽  
2015 ◽  
Vol 5 (14) ◽  
pp. 10662-10666 ◽  
Author(s):  
Dongjin Kim ◽  
Hee Seok Roh ◽  
Yeontae Kim ◽  
Kwangsoo No ◽  
Seungbum Hong
Keyword(s):  
High Performance ◽  
Energy Harvester ◽  
Energy Harvesters ◽  
Piezoelectric Energy ◽  
Spring Type

We designed and fabricated a high performance spring-type piezoelectric energy harvester that selectively collects current from the inner part of a spring shell.

scholarly journals Fabric-Based Triboelectric Nanogenerators

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Jinmei Liu ◽  
Long Gu ◽  
Nuanyang Cui ◽  
Qi Xu ◽  
Yong Qin ◽  
...  
Keyword(s):  
High Performance ◽  
Material Synthesis ◽  
Power Sources ◽  
Practical Applications ◽  
Energy Harvesters ◽  
Portable Electronics ◽  
The Past ◽  
Triboelectric Nanogenerators ◽  
Energy Harvesting Devices ◽  
Further Development

In the past decades, the progress of wearable and portable electronics is quite rapid, but the power supply has been a great challenge for their practical applications. Wearable power sources, especially wearable energy-harvesting devices, provide some possible solutions for this challenge. Among various wearable energy harvesters, the high-performance fabric-based triboelectric nanogenerators (TENGs) are particularly significant. In this review paper, we first introduce the fundamentals of TENGs and their four basic working modes. Then, we will discuss the material synthesis, device design, and fabrication of fabric-based TENGs. Finally, we try to give some problems that need to be solved for the further development of TENGs.

Holey graphene/MnO 2 nanosheets with open ion channels for high‐performance solid‐state asymmetric supercapacitors

2020 ◽  
Vol 44 (5) ◽  
pp. 3446-3457 ◽  
Author(s):  
Xia Li ◽  
Aimei Gao ◽  
Dong Shu ◽  
Kemeng Yang ◽  
Xiaoping Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Channels ◽  
High Performance ◽  
Asymmetric Supercapacitors

The Microstructural, Mechanical and Electro-Mechanical Properties of Graphene Aerogel-PVDF Nanoporous Composites

2014 ◽  
Vol 29 ◽  
pp. 1-6 ◽  
Author(s):  
Guang Ping Zheng ◽  
Z. Han ◽  
Y.Z. Liu
Keyword(s):  
Electrical Resistance ◽  
High Performance ◽  
Vinylidene Fluoride ◽  
Mechanical Relaxation ◽  
Graphene Aerogel ◽  
Energy Harvesters ◽  
Poly Vinylidene Fluoride ◽  
Mechanical Behaviours ◽  
Stress Dependent ◽  
Hybrid Scaffolds

Graphene aerogel-poly (vinylidene fluoride) (GA-PVDF) nanoporous composites with different concentrations of PVDF are fabricated. Scanning electron microscopy reveals that PVDF films with a typical thickness below 100 nm are coated at the graphene sheets in the nanoporous composites. The GA-PVDF composites show excellent compressibility, ductility and mechanical strength, as well as better sensitivity of stress-dependent electrical resistance compared with those of GAs. The improved mechanical and electro-mechanical behaviours of nanoporous composites are ascribed to the PVDF which possesses piezoelectricity. The structural properties of the graphene-PVDF nanosized hybrid scaffolds are analyzed by dynamical mechanical relaxation. The results demonstrate that the nanoporous composites could be used as high-performance sensors, actuators and kinetic energy harvesters.

Carbon anchored conducting polymer composite linkage for high performance water energy harvesters

Nano Energy ◽  
2020 ◽  
Vol 74 ◽  
pp. 104827
Author(s):  
Sung-Ho Shin ◽  
Jun Young Cheong ◽  
Haeseong Lim ◽  
Vinod V.T. Padil ◽  
Abhilash Venkateshaiah ◽  
...  
Keyword(s):  
Conducting Polymer ◽  
Polymer Composite ◽  
High Performance ◽  
Energy Harvesters

scholarly journals Fabrication of a composite anion exchange membrane with aligned ion channels for a high-performance non-aqueous vanadium redox flow battery

RSC Advances ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 5010-5025 ◽  
Author(s):  
Jae-Hun Kim ◽  
Seungbo Ryu ◽  
Sandip Maurya ◽  
Ju-Young Lee ◽  
Ki-Won Sung ◽  
...  
Keyword(s):  
Ion Channels ◽  
Ion Exchange ◽  
Anion Exchange ◽  
High Performance ◽  
Anion Exchange Membrane ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Redox Flow Batteries ◽  
Exchange Membrane ◽  
Vanadium Redox

Fabrication of high-conductivity ion exchange membranes (IEMs) is crucial to improve the performance of non-aqueous vanadium redox flow batteries (NAVRFBs).

scholarly journals Magnetic Field Energy Harvesting with a Lead-Free Piezoelectric High Energy Conversion Material

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1346
Author(s):  
Quan Wang ◽  
Kyung-Bum Kim ◽  
Sang Bum Woo ◽  
Tae Hyun Sung
Keyword(s):  
Magnetic Field ◽  
Energy Conversion ◽  
High Performance ◽  
High Energy ◽  
Green Energy ◽  
Lead Free ◽  
Field Energy ◽  
Energy Harvesters ◽  
Magnetic Field Energy ◽  
Piezoelectric Energy

This article presents a high-performance lead-free piezoelectric energy harvester (LPEH) system for magnetic field. It based on a Ba0.85Ca0.15Ti0.90Zr0.10O3 + CuO 0.3 wt% (BCTZC0.3) composite was fabricated by sintering at 1450 °C. The BCTZC0.3 composite, which has an enhanced high energy conversion constant (), shows improved piezoelectric power-generation performance when compared with conventional piezoelectric energy harvesters. The BCTZC0.3-based LPEH produces instantaneous maximum power of 8.2 mW and an energy density of 107.9 mW/cm3 in a weak magnetic field of 250 μT. This system can be used to charge a capacitor and operate a wireless sensor network (WSN) system to provide temperature sensing and radio-frequency (RF) transmission in a 250 μT magnetic field. The proposed LPEH is a promising green-energy device for potentially self-powering WSN systems when applied.

scholarly journals High Capacity and Superior Rate Performances Coexisting in Carbon-Based Sodium-Ion Battery Anode

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Yuqian Li ◽  
Liyuan Zhang ◽  
Xiuli Wang ◽  
Xinhui Xia ◽  
Dong Xie ◽  
...  
Keyword(s):  
Ion Channels ◽  
High Performance ◽  
Specific Capacity ◽  
High Capacity ◽  
Rate Capability ◽  
Sodium Ion ◽  
Transformation Rule ◽  
High Specific Capacity ◽  
Storage Behavior ◽  
Fast Ion

Amorphous carbon is considered as a prospective and serviceable anode for the storage of sodium. In this contribution, we illuminate the transformation rule of defect/void ratio and the restrictive relation between specific capacity and rate capability. Inspired by this mechanism, ratio of plateau/slope capacity is regulated via temperature-control pyrolysis. Moreover, pore-forming reaction is induced to create defects, open up the isolated voids, and build fast ion channels to further enhance the capacity and rate ability. Numerous fast ion channels, high ion-electron conductivity, and abundant defects lead the designed porous hard carbon/Co3O4 anode to realize a high specific capacity, prolonged circulation ability, and enhanced capacity at high rates. This research deepens the comprehension of sodium storage behavior and proposes a fabrication approach to achieve high performance carbonaceous anodes for sodium-ion batteries.

Sign in / Sign up

Export Citation Format

Share Document