High performance screen-printed electrodes prepared by a green solvent approach for lithium-ion batteries

Gören, Attila; Mendes, Jorge A.; Rodrigues, Henrique Miguel Ribeiro; Sousa, R.; Oliveira, Juliana T.; Hilliou, L.; Costa, Carlos M.; Silva, Maria Manuela; Lanceros‐Méndez, S.

doi:10.1016/j.jpowsour.2016.10.019

Cited by 73 publications

(60 citation statements)

References 68 publications

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“…The overall resistance of the semicircle is the sum of the ohmic resistance (due to the liquid electrolyte), resistance that represents the contact film resistance (Li‐ion migration resistance through the solid electrolyte interface (SEI) film formed on the cathode surface) and resistance contributions from the charge‐transfer reaction resistance ascribed to the lithium‐intercalation process …”

Section: Resultsmentioning

confidence: 99%

Preparation of Poly(vinylidene fluoride) Lithium-Ion Battery Separators and Their Compatibilization with Ionic Liquid - A Green Solvent Approach

et al. 2017

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Battery separator membranes for lithium-ion batteries have been developed based on poly(vinylidene fluoride), PVDF, and using the "green solvent" -N,N'-dimethylpropyleneurea (DMPU). This separator presents a porous microstructure with a degree of porosity of 20 % and pore size below 1 mm, showing excellent mechanical properties. Further, its ionic conductivity, tortuosity and MacMullin number values are 0.1 mS.cm À1 , 4 and 82, respectively. This PVDF separator membrane was evaluated in Li/C-LiFePO 4 half-cells with electrolyte solution showing good cyclability and rate capability, with a discharge value after 50 cycles of 56 mAh.g À1 at C, corresponding to 50 % of the capacity retention. Its electrochemical performance soaked in ionic liquid presents a discharge capacity of 45 mAh.g À1 at C/5rate and capacity retention of 60%, respectively. Thus, this separator is an appropriate candidate for environmentally friendlier and safer lithium-ion batteries.[a] Dr.

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Section: Resultsmentioning

confidence: 99%

Preparation of Poly(vinylidene fluoride) Lithium-Ion Battery Separators and Their Compatibilization with Ionic Liquid - A Green Solvent Approach

et al. 2017

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“…236576), and PVdF was sourced from Kureha (KF polymer #1300). 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (DMPU, a good solvent for PVdF 19 ) was procured from Tokyo Chemical Industry, and KCl and other reagents were purchased from Wako Pure Chemical. Commercially available Ag ink (ECM-100 AF5000) and solder resist ink (SR-40) were obtained from Taiyo Ink Co. Ltd.…”

Section: Methodsmentioning

confidence: 99%

“…For example, when the performance of a gas-evolution electrode was evaluated in a highly conductive solution, the overly high reference electrode resistance resulted in spectral errors in the low-frequency range. 19,20 Therefore, we estimated the resistance of the prepared reference electrode by EIS, with the obtained Nyquist plot presented in Fig. 7.…”

Section: Eis Measurementsmentioning

confidence: 99%

Fabrication and Characterization of a Fully Screen-Printed Ag/AgCl Reference Electrode Using Silica Gel Inks Exhibiting Instantaneous Usability and Long-Term Stability

et al. 2019

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An instantly usable screen-printed Ag/AgCl electrode with long-term stability was fabricated for use as a costeffective disposable reference electrode. A new silica gel-poly(vinylidene difluoride) ink was prepared to form the hydrophilic liquid junction and electrolyte layer of a planar-type reference electrode and the temporal evolution of its open-circuit potential in different electrolyte solutions was subsequently compared to that of a commercial reference electrode. The potential stabilized within 3 min and remained constant over 20 days. The impedance of the liquid junction was~2500 Ω, which is close to the value observed for a commercial reference electrode. These results implied that the as-fabricated reference electrode was well-suited for practical measurements.

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“…Nevertheless, there are research groups Table 7. Materials for supercapacitor electrodes Pseudocapacitor EDLC that also use screen printing to produce Li-based batteries [132] . Polymers have also been used as electrode material.…”

Section: Battery Electrodesmentioning

confidence: 99%

Screen Printing Technology for Energy Devices

Willfahrt¹

2019

Linköping Studies in Science and Technology. Dissertations

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The technical application of screen and stencil printing has been state of the art for decades. As part of the subtractive production process of printed circuit boards, for instance, screen and stencil printing play an important role. With the end of the 20th century, another field has opened up with organic electronics. Since then, more and more functional layers have been produced using printing methods. Printed electronics devices offer properties that give almost every freedom to the creativity of product development. Flexibility, low weight, use of non-toxic materials, simple disposal and an enormous number of units due to the production process are some of the prominent keywords associated with this field. Screen printing is a widely-used process in printed electronics, as this process is very flexible with regard to the materials that can be used. In addition, a minimum resolution of approximately 30 µm is sufficiently high. The ink film thickness, which can be controlled over a wide range, is an extremely important advantage of the process. Depending on the viscosity, layer thicknesses of several hundred nanometres up to several hundred micrometres can be realised. The conversion and storage of energy is an important topic, either in the field of renewable energies or the energy supply of the Internet of Things (IoT). This thesis addresses the print production of both device classes. Vertically structured thermoelectric generators (TEGs) for energy conversion and stacked supercapacitors for energy storage are produced by screen printing. Papers I-IV focus on the generation of functional layers of vertically aligned thermoelectric generators. These can convert heat directly into electrical energy. The vertical design was chosen due to the simple application of the device at the heat source. The general feasibility of screen-printed, vertically aligned TEGs was demonstrated. Optimisation of the thermoelectric materials is required, so that the process can be used sensibly. In paper III, the Ni containing model ink was optimised for filling the cavities in the insulator layer. In paper IV the printed thermoelectric generators are modelled. The performance of a set of parameters can be estimated by this model. The high Seebeck coefficient of ionic conductors is used in paper V in so-called ionic thermoelectric supercapacitor (ITESC), a combination of TEG and supercapacitor. Paper VI presents an environmentally friendly supercapacitor with a printable separator based on cornstarch and citric acid, which has a competitive electrochemical performance compared to printed supercapacitors reported elsewhere. In paper VII, some parameters of screen-printed primary Zn/MnO 2 cells are optimised and a printable separator based on cornstarch and lactic acid was successfully tested. "The journey is the reward" Confucius comes closest to german aphorism "Der Weg ist das Ziel". This sentence best describes how I feel about my doctoral thesis, which is now being completed. The journey was longer than I initially thought, bu...

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High performance screen-printed electrodes prepared by a green solvent approach for lithium-ion batteries

Cited by 73 publications

References 68 publications

Preparation of Poly(vinylidene fluoride) Lithium-Ion Battery Separators and Their Compatibilization with Ionic Liquid - A Green Solvent Approach

Preparation of Poly(vinylidene fluoride) Lithium-Ion Battery Separators and Their Compatibilization with Ionic Liquid - A Green Solvent Approach

Fabrication and Characterization of a Fully Screen-Printed Ag/AgCl Reference Electrode Using Silica Gel Inks Exhibiting Instantaneous Usability and Long-Term Stability

Screen Printing Technology for Energy Devices

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