Multifunctional Nanomaterials Modification of Cellulose Paper for Efficient Triboelectric Nanogenerators

Abstract

There is a need to develop inexpensive, lightweight, and flexible high‐performance triboelectric nanogenerators (TENGs) from renewable resources. Here, a multifunctional cellulose filter paper (CFP)‐based TENG consisting of dielectric Ti0.8O2 nanosheets (Ti0.8O2 NSs) and conducting Ag nanoparticles (Ag NPs) is prepared by a simple dip coating method. The incorporation of dielectric Ti0.8O2 NSs onto the CFP significantly improves charge generation, while the inclusion of Ag NPs provides an electrically conductive path for charge transportation. The presence of these fillers can be deduced from XRD, SEM, EDS, X‐ray photoelectron spectroscopy, and Raman spectroscopy. Their distribution is visualized in 3D by synchrotron radiation X‐ray tomography. The present CFP‐based TENG provides an output voltage and current density of ≈42 V and ≈1 µA cm−2, respectively with the power density of ≈25 µW cm−2. It is capable of lighting up 40 light‐emitting diode bulbs and charging a 0.22 µF capacitor to 8 V in only 5 s. The developed TENG is also capable of detecting simple human motions, i.e., finger tapping, finger rubbing, and foot trampling. This work offers a facile design of low cost yet efficient paper‐based TENG by dual modification with multifunctional nanomaterials, and also demonstrates its use as a feasible power source that not only drives small electronics, but also scavenges energy from human actions.

Recent progresses on paper‐based triboelectric nanogenerator for portable self‐powered sensing systems

“…Reproduced with permission: Copyright 2018, American Chemical Society 45 . F, Illustration of same coating techniques includes (1) sprayed, (reproduced with permission: Copyright 2019, American Chemical Society 51 ) (2) dipped (reproduced with permission: Copyright 2020, Wiley 50 ), and (3) spin (reproduced with permission: Copyright 2012, Royal Society of Chemistry 48 ) onto the surface of substrate…”

“…This also proves that vacuum filtration is an effective and convenient way to make paper-based electrode. The coating technology, in which the conductive materials are sprayed, 46 spin, 47,48 or dipped 49,50 onto the substrate surface, has also usually been used to obtain electrode on paper substrates. Spray-coating is a progress of atomizing and painting the materials onto the substrate by compressed gas, static electricity or other ways.…”

Bio‐Derived Natural Materials Based Triboelectric Devices for Self‐Powered Ubiquitous Wearable and Implantable Intelligent Devices

“…Reproduced with permission. [322] Copyright 2018, John Wiley and Sons. h) The self-charging power wristband.…”

“…However, many challenges still prevail, such as whether the fabric can be washed, whether the performance of the functional cotton cloth will be affected by water molecules, how to store the electricity, and etc. Sriphan et al [322] modified the cellulose papers with Ti 0.8 O 2 nanosheets (Ti 0.8 O 2 NSs) and Ag nanoparticles (Ag NPs)) for fabricating TENG devices (Figure 3g). The results indicated that Ti 0.8 O 2 NSs could significantly improve the dielectric property of cellulose paper, and Ag NPs provided a conductive path for charge transportation.…”

Synergetic Enhancement of Triboelectric Nanogenerators’ Performance Based on Patterned Membranes Fabricated by Phase‐Inversion Process

“…[5] Unlike the piezoelectric nanogenerator (PENG), which converts mechanical energy to electrical energy using the piezoelectric effect, the TENG technique generates a larger voltage and current through triboelectric and electrostatic effects. [4,6,7] In principle, two strategies can be used to enhance the performance of TENGs. The first approach is increasing the surface charges through the optimal choice of materials or introducing electrets.…”