EPD of thick films for their application in lithium batteries

Ferrari, B.; Moreno, Rodrigo; Hernán, L.; Melero, M.; Morales, J.; Caballero, Álvaro

doi:10.1016/j.jeurceramsoc.2007.02.051

Cited by 20 publications

(11 citation statements)

References 17 publications

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“…To fabricate high‐performance cathode films by EPD, conductive agent along with the active materials is deposited simultaneously. Carbon is readily modified with charges after post‐treatment or with the addition of extrinsic surfactant such as citric acid and magnesium ions . The adhesion force between deposited film and substrate cannot ensure pronounced adhesion, and active material particles must be deposited together with a small amount of binder.…”

Section: Lithium‐ion Batteriesmentioning

confidence: 99%

“…The adhesion force between deposited film and substrate cannot ensure pronounced adhesion, and active material particles must be deposited together with a small amount of binder. Ferrari et al reported that the addition of binder agent enhances the connectivity between coating and substrate. Although binder‐free cathode films can also be fabricated via EPD to improve the capacity, limited adhesion is frequently observed after deposition and drying of the EPD films .…”

Section: Lithium‐ion Batteriesmentioning

confidence: 99%

“…This is due to the balance of electron and ion diffusions; abundant covering carbon reduces the Li + diffusion in the electrode, while insufficient carbon does not ensure reasonable electronic conductivity. Similar methods are employed for other systems such as LiNi 0.5 Mn 1.5 O 4 with citric acid as surfactant in acetone and LiFePO 4 with iodine in acetone . In addition to the electrochemical properties, unique 3D microbattery assembly is of particular value for certain applications …”

Section: Lithium‐ion Batteriesmentioning

confidence: 99%

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Highly Efficient Materials Assembly Via Electrophoretic Deposition for Electrochemical Energy Conversion and Storage Devices

Wen

Zhang

et al. 2016

Advanced Energy Materials

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and fi lms can be assembled on substrates with this versatile method. Film thickness, particle size and inter structure of EPD fi lms are controllable by adjusting the suspension/process parameters. [ 2,3 ] Energy conversion and storage devices have been developed rapidly in the past few decades, and proposed as the foundation of modern society. Novel carbon materials such as graphene and carbon nanotubes (CNTs) are investigated widely for high-effi ciency rechargeable battery and supercapacitor (SC) applications. [ 4,5 ] Traditional methods such as blade coating and slot die are employed to prepare electrodes to realize such applications. [ 6,7 ] In these methods, active materials are dissolved into a solvent to form a viscous solution, and a fi lm is obtained after coating and solvent evaporation. Nevertheless, neither thickness control nor a high fi lm assembly effi ciency can be realized via these methods. In addition, traditional methods exhibit limitation on the fabrication of nanostructured energy materials due to the aggregation of nanoparticles. On the other hand, methods for micro-batteries such as vapor deposition methods, [ 8 ] radio-frequency sputtering, [ 9 ] and pulsed laser deposition [ 10,11 ] are expensive and diffi cult to scale up. Indeed, a versatile EPD technique with cost-effectiveness, short formation time, and high scalability is promising for efficient fabrication of energy conversion and storage materials and devices. A typical EPD process is performed in two steps, including the dispersion of powder particles in a solvent to form a stable suspension and the deposition of particles on a substrate in the presence of an electric fi eld. [ 12,13 ] Preparation of a stable suspension is essential to the deposition process. The stability of suspension, adjustable with surfactants, is correlated with electrostatic repulsive and van der Waals attractive interactions. The stability of suspension/colloid is characterized by zeta potential, the value of which represents the magnitude of repulsive interaction while the sign represents the migration direction of particles. Zeta potential is mainly determined by temperature, pH, and type of surfactant. On the other hand, the migration velocity of particles in deposition depends on the applied voltage/current, particle size, zeta potential, suspension concentration, and solvent viscosity. [ 14 ] The utilization of EPD in the energy storage/conversion devices fi eld enables the direct deposition of active particles on the current collector.Featuring pronounced controllability, versatility, and scalability, electrophoretic deposition (EPD) has been proposed as an effi cient method for fi lm assembly and electrode/solid electrolyte fabrication in various energy storage/conversion devices including rechargeable batteries, supercapacitors, and fuel cells. High-quality electrodes and solid electrolytes have been prepared through EPD and exhibit advantageous performances in comparison with those realized with traditional methods. Recent advances in the appli...

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Section: Lithium‐ion Batteriesmentioning

confidence: 99%

Section: Lithium‐ion Batteriesmentioning

confidence: 99%

Section: Lithium‐ion Batteriesmentioning

confidence: 99%

See 1 more Smart Citation

Highly Efficient Materials Assembly Via Electrophoretic Deposition for Electrochemical Energy Conversion and Storage Devices

Wen

Zhang

et al. 2016

Advanced Energy Materials

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“…The ability of producing thick films by EPD has made it interesting for application in lithium batteries [43] which currently are the most favorable portable energy source in electronic devices [94]. High power and long life cycle of electrochemical capacitors, which operate via taking advantage of the double layer formed at the interface of electrode and electrolyte [95], have made them a promising choice for energy storage applications [96,97].…”

Section: Batteries and Electrochemical Capacitorsmentioning

confidence: 99%

Electrophoretic Deposition (EPD): Fundamentals and Applications from Nano- to Micro-Scale Structures

Amrollahi

Krasiński

Vaidyanathan

et al. 2015

Handbook of Nanoelectrochemistry

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EPD is a technique where charged particles in a stable colloidal suspension are moved through the liquid due to electric field and deposited on an oppositely charged conductive substrate, forming the intended material or device. EPD enables fabrication of a wide range of structures from traditional to advanced materials, from nanometric thin films to a fraction of 1 mm thick films, and from porous scaffolds to highly compact coatings. These structures include different compositions with complex shapes and structures which can be formed in a relatively short experimentation time by simple apparatus. This review presents the fundamentals, mechanisms, and characteristics of EPD along with its past and recent applications.

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“…As compared with tape casting, EPD is also suitable for the production of thickness-controlled laminates with good adherence between the layers. 15) Therefore, recently EPD has recently been applied in many fields, such as dielectric films 16 -19) , electrochromic films 20) , lithium batteries 21) , fiber-reinforced composites 22) , solid oxide fuel cell laminates 23 -26) , phosphor films 27,28) , etc. A significant advantage of using electric fields is that the charged particles in solution do not directly migrate to the electrodes the shortest distance away, but rather migrate along the electric potential gradient in a space filled with solution and then deposit.…”

Section: Electrophoretic Process As Consolidation and Formation Technmentioning

confidence: 99%

Forming and Microstructure Control of Ceramics by Electrophoretic Deposition (EPD)

Sakka

Uchikoshi

2010

KONA

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EPD of thick films for their application in lithium batteries

Cited by 20 publications

References 17 publications

Highly Efficient Materials Assembly Via Electrophoretic Deposition for Electrochemical Energy Conversion and Storage Devices

Highly Efficient Materials Assembly Via Electrophoretic Deposition for Electrochemical Energy Conversion and Storage Devices

Electrophoretic Deposition (EPD): Fundamentals and Applications from Nano- to Micro-Scale Structures

Forming and Microstructure Control of Ceramics by Electrophoretic Deposition (EPD)

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