Li and Ta-modified KNN piezoceramic fibers for vibrational energy harvesters

Ichangi, Arun; Shvartsman, Vladimir V.; Lê, Khan; Grosch, Matthias; Schmidt-Verma, Anna Kathrin; Bohr, Christoph; Verma, Anjneya; Fischer, Thomas; Mathur, Sanjay

doi:10.1016/j.jeurceramsoc.2021.08.010

Cited by 23 publications

(12 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 F presents the PFM phase hysteresis loops and characteristic amplitude “butterfly curves” on the BTO surface. The phase greater than 90° in the phase-transition region indicates the BTO to be a ferroelectric component ( 33 – 35 ). Additionally, the wide voltage range of up to 1.3 V toward phase hysteresis is sufficient for most interfaces with overpotential below 0.5 V to limit the polarization field ( 36 ).…”

Section: Resultsmentioning

confidence: 99%

Combating Li metal deposits in all-solid-state battery via the piezoelectric and ferroelectric effects

Tao

Chen

Bhardwaj

et al. 2022

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

View full text Add to dashboard Cite

All-solid-state Li-metal batteries (ASSLBs) are highly desirable, due to their inherent safety and high energy density; however, the irregular and uncontrolled growth of Li filaments is detrimental to interfacial stability and safety. Herein, we report on the incorporation of piezo-/ferroelectric BaTiO 3 (BTO) nanofibers into solid electrolytes and determination of electric-field distribution due to BTO inclusion that effectively regulates the nucleation and growth of Li dendrites. Theoretical simulations predict that the piezoelectric effect of BTO embedded in solid electrolyte reduces the driving force of dendrite growth at high curvatures, while its ferroelectricity reduces the overpotential, which helps to regularize Li deposition and Li + flux. Polarization reversal of soft solid electrolytes was identified, confirming a regular deposition and morphology alteration of Li. As expected, the ASSLBs operating with LiFePO 4 /Li and poly(ethylene oxide) (PEO)/garnet solid electrolyte containing 10% BTO additive showed a steady and long cycle life with a reversible capacity of 103.2 mAh g −1 over 500 cycles at 1 C. Furthermore, the comparable cyclability and flexibility of the scalable pouch cells prepared and the successful validation in the sulfide electrolytes, demonstrating its universal and promising application for the integration of Li metal anodes in solid-state batteries.

show abstract

Section: Resultsmentioning

confidence: 99%

Combating Li metal deposits in all-solid-state battery via the piezoelectric and ferroelectric effects

Tao

Chen

Bhardwaj

et al. 2022

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The calcination temperature was set at 700 °C, because based on Ichangi et al this was the optimum temperature to obtain a phase pure material with fiber morphology. [ 58 ] During the calcination process, the fiber mat samples were placed between two alumina discs.…”

Section: Methodsmentioning

confidence: 99%

“…The incorporation of Li + and Ta 5+ effectively doubled the piezoelectric response signal in the vertical direction to the fiber diameter, when measured with a piezoresponse force microscopy. [ 58 ] In addition, KNN microfibers prepared by thermal extrusion with a composition of (K,Na)NbO 3 − LiTaO 3 − LiSbO 3 were found to exhibit a very high strain of 0.17% ( S max ) at 3 kV mm −1 and a piezoelectrical d 33 values close to 140 pm V −1 . [ 59 ] Studies on electrospun KNN fibers have mainly focused on investigating ferroelectric properties at the microscale on a single fiber.…”

Section: Introductionmentioning

confidence: 99%

Electrospun (K,Na)NbO₃ Piezoceramic Fibers for Self‐Powered Tactile Sensing Application

Ichangi,

Derichsweiler,

Mathur

et al. 2023

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

This study investigates the electrical properties of electrospun ceramic fiber mats based on potassium sodium niobate ((K,Na)NbO3;KNN) for potential applications in soft‐robotic tactile sensors. The rheological studies of electrospinning solutions exhibit shear thinning behavior, with a viscosity plateau between shear rates of 1–100 s−1. The thermal decomposition behavior of the KNN samples is analyzed using thermogravimetric analysis; the samples show multistep decomposition processes leading into a phase pure perovskite structure. For the electrospun KNN fiber mats, the electrical characterization reveals ferroelectric hysteresis loops with a high leakage current of ≈270 nA at 20 kV cm−1 and switching current behavior. The ferroelectric results indicate that a full polarization of KNN‐fiber mats is not possible due to their electrical breakdown at high electrical fields. The integration of KNN short fibers into a soft‐bending actuator demonstrates successful tactile sensing capabilities. The experimental findings reported here highlight the potential of electrospun KNN fiber mats for flexible and autonomous device applications in soft robotics.

show abstract

“…Fig. 5g compares the output performance of the B-M endogenous TENG with that of the PENG reported in the literature 36,[47][48][49][50][51][52][53][54][55][56][57] (the details are shown in Table S2 †). The V OC of the B-M endogenous TENG was the highest, and the output power was in the middle level.…”

Section: Working Principle and Performance Of Various Plabased Endoge...mentioning

confidence: 99%

Enhancing the endogenous triboelectricity of a polylactic acid nanofiber film by controlling the MXene content and distribution

et al. 2022

View full text Add to dashboard Cite

show abstract

Li and Ta-modified KNN piezoceramic fibers for vibrational energy harvesters

Cited by 23 publications

References 51 publications

Combating Li metal deposits in all-solid-state battery via the piezoelectric and ferroelectric effects

Combating Li metal deposits in all-solid-state battery via the piezoelectric and ferroelectric effects

Electrospun (K,Na)NbO₃ Piezoceramic Fibers for Self‐Powered Tactile Sensing Application

Enhancing the endogenous triboelectricity of a polylactic acid nanofiber film by controlling the MXene content and distribution

Contact Info

Product

Resources

About

Li and Ta-modified KNN piezoceramic fibers for vibrational energy harvesters

Cited by 23 publications

References 51 publications

Combating Li metal deposits in all-solid-state battery via the piezoelectric and ferroelectric effects

Combating Li metal deposits in all-solid-state battery via the piezoelectric and ferroelectric effects

Electrospun (K,Na)NbO3 Piezoceramic Fibers for Self‐Powered Tactile Sensing Application

Enhancing the endogenous triboelectricity of a polylactic acid nanofiber film by controlling the MXene content and distribution

Contact Info

Product

Resources

About

Electrospun (K,Na)NbO₃ Piezoceramic Fibers for Self‐Powered Tactile Sensing Application