5 research outputs found
Polyaniline Nanostructures Embedded Ethylcellulose Conductive Polymer Composite Films-Based Triboelectric Nanogenerators for Mechanical Energy Harvesting and Self-Powered Electronics
The fast growth of wearable/portable
electronics and the demand
for highly effective and long-lasting self-powered systems to support
their off-grid operation have significantly increased. Triboelectric
nanogenerators (TENGs), a promising energy-harvesting technology,
have attracted research interest in recent years for wearable and
self-powered portable electronic applications. In this report, conductive
polyaniline (PANI) nanostructures (NSs) were synthesized via a facile
chemical oxidation polymerization method. The synthesized PANI NSs
were embedded into a triboelectric ethylcellulose (EC) polymer to
form a conductive polymer composite film (PANI/EC-CPCF), which enhances
the triboelectricity and electrical conductivity of the CPCF. The
prepared PANI/EC-CPCF layer and commercially available fluorinated
ethylene propylene were employed as positive and negative triboelectric
materials, which are used to construct a TENG device. The output electrical
performance of the fabricated TENGs was studied and optimized systematically
by varying the filler amount of PANI NSs in the EC polymer. The optimized
TENG exhibited high output voltage, current, charge density, and power
density values of ∼130 V, ∼5 μA, ∼45 μC/m2, and ∼650 mW/m2, respectively. Furthermore,
the robustness analysis and mechanical stability of the TENG were
studied under a long-term durability test for several days. Finally,
the practical and real-time applications of the proposed TENG were
demonstrated by varying the environmental conditions and harvesting
mechanical energy from daily human actions in a living environment,
which is used to power several low-power electronic gadgets
Polyaniline Nanostructures Embedded Ethylcellulose Conductive Polymer Composite Films-Based Triboelectric Nanogenerators for Mechanical Energy Harvesting and Self-Powered Electronics
The fast growth of wearable/portable
electronics and the demand
for highly effective and long-lasting self-powered systems to support
their off-grid operation have significantly increased. Triboelectric
nanogenerators (TENGs), a promising energy-harvesting technology,
have attracted research interest in recent years for wearable and
self-powered portable electronic applications. In this report, conductive
polyaniline (PANI) nanostructures (NSs) were synthesized via a facile
chemical oxidation polymerization method. The synthesized PANI NSs
were embedded into a triboelectric ethylcellulose (EC) polymer to
form a conductive polymer composite film (PANI/EC-CPCF), which enhances
the triboelectricity and electrical conductivity of the CPCF. The
prepared PANI/EC-CPCF layer and commercially available fluorinated
ethylene propylene were employed as positive and negative triboelectric
materials, which are used to construct a TENG device. The output electrical
performance of the fabricated TENGs was studied and optimized systematically
by varying the filler amount of PANI NSs in the EC polymer. The optimized
TENG exhibited high output voltage, current, charge density, and power
density values of ∼130 V, ∼5 μA, ∼45 μC/m2, and ∼650 mW/m2, respectively. Furthermore,
the robustness analysis and mechanical stability of the TENG were
studied under a long-term durability test for several days. Finally,
the practical and real-time applications of the proposed TENG were
demonstrated by varying the environmental conditions and harvesting
mechanical energy from daily human actions in a living environment,
which is used to power several low-power electronic gadgets
Polyaniline Nanostructures Embedded Ethylcellulose Conductive Polymer Composite Films-Based Triboelectric Nanogenerators for Mechanical Energy Harvesting and Self-Powered Electronics
The fast growth of wearable/portable
electronics and the demand
for highly effective and long-lasting self-powered systems to support
their off-grid operation have significantly increased. Triboelectric
nanogenerators (TENGs), a promising energy-harvesting technology,
have attracted research interest in recent years for wearable and
self-powered portable electronic applications. In this report, conductive
polyaniline (PANI) nanostructures (NSs) were synthesized via a facile
chemical oxidation polymerization method. The synthesized PANI NSs
were embedded into a triboelectric ethylcellulose (EC) polymer to
form a conductive polymer composite film (PANI/EC-CPCF), which enhances
the triboelectricity and electrical conductivity of the CPCF. The
prepared PANI/EC-CPCF layer and commercially available fluorinated
ethylene propylene were employed as positive and negative triboelectric
materials, which are used to construct a TENG device. The output electrical
performance of the fabricated TENGs was studied and optimized systematically
by varying the filler amount of PANI NSs in the EC polymer. The optimized
TENG exhibited high output voltage, current, charge density, and power
density values of ∼130 V, ∼5 μA, ∼45 μC/m2, and ∼650 mW/m2, respectively. Furthermore,
the robustness analysis and mechanical stability of the TENG were
studied under a long-term durability test for several days. Finally,
the practical and real-time applications of the proposed TENG were
demonstrated by varying the environmental conditions and harvesting
mechanical energy from daily human actions in a living environment,
which is used to power several low-power electronic gadgets
Natural silk-composite enabled versatile robust triboelectric nanogenerators for smart applications
Strategies to maximize the surface charge density across triboelectric layers while protecting it from humidity are crucial in employing triboelectric nanogenerators (TENGs) for commercial/real-time applications. Herein, for the first time, we propose the utility of crystalline silk microparticles (SMPs) to improve the surface charge density in materials like polyvinyl alcohol to realise its applicability for TENG devices. Moreover, these SMPs are extracted from discarded Bombyx mori silkworm cocoons by facile, inexpensive, and single-step alkaline-hydrolysis treatment. We examine the performance of these composites with counter-materials composed of waste PTFE plastic cups to show reuse in recycled products. The processing cost of TENG developed from recycled materials is not only low but eco-friendly. The TENG performance as a function of the concentration of SMPs is investigated and compared with the composite's work-function and surface-potentials, with the distance-dependent electric field theoretical model employed to optimize the performance. Consequently, the optimized TENG exhibits maximum output voltage, current, charge, and power density of ∼280 V, 17.3 μA, 32.5 nC, and 14.4 W·m−2, respectively, creating a highly competitive energy harvester that can conform to the rigorous needs of wearables and mobile applications. Furthermore, the fully packaged silicone rubber device protects it from humidity and enables the device utility for practical applications with a soft, comfortable, and skin-friendly interface
Exploring the theoretical and experimental optimization of high-performance triboelectric nanogenerators using microarchitectured silk cocoon films
Triboelectric nanogenerators (TENGs) developed using eco-friendly natural materials instead of traditional electronic materials are more favorable for biocompatible applications, as well as from a sustainable life-cycle analysis perspective. Microarchitectured silkworm fibroin films with high surface roughness and an outstanding ability to lose electrons are used to design TENGs. An alcohol-annealing treatment is utilized to strengthen the resistance of the silk film (SF) against humidity and aqueous solubility. Herein, for the first time, the distance-dependent electric field theoretical model is employed to optimize the TENG parameters to achieve high output, which shows excellent agreement with the experimental outputs of SF-based TENG. The alcohol-treated microarchitectured SF (AT-MASF) with a polytetrafluoroethylene positive contact exhibits a stable and high electrical output even in harsh environments. These studies can lead us closer to the attractive future vision of realizing biodegradable TENG systems for harness/sensing various biomechanical activities even under real/humid environments. The potential and real-time application of the proposed AT-MASF-based TENG is demonstrated by directly employing its electric power to drive a number of low-power portable electronics and for sensing in human-body centric activities