三菱鉛筆 Product Lineup

We would like to introduce our "Fuel Cell Separator." The resistance is 7 mΩ·cm², the bending strength is 70 MPa, and the bending strain is 2.2%. Through the optimization of original conductive fillers, conductive fibers, and thermoplastic resins, we have balanced each physical property at a high level. Additionally, our carbon manufacturing technology allows us to provide a variety of materials, from dense bodies to porous bodies, all made of carbon. Please feel free to contact us if you have any requests. 【Physical Properties】 ■ Resistance: 7 mΩ·cm² ■ Bending Strength: 70 MPa ■ Bending Strain: 2.2% ■ Gas Permeability (H2): 4×10⁻⁸ cm³ sec⁻¹ cm⁻² ■ Thickness: 300 μm *For more details, please download the PDF or feel free to contact us.

• Other polymer materials

We accept commissioned prototyping and development of "battery slurries and battery electrodes." Formulations can be specified by the customer, and we can also propose materials and formulations from our side. We can select suitable dispersion equipment and processes, accommodating from a few kilograms to pilot scale. Additionally, we can complete slurry preparation and coating at the same site, and we also accept commissions for slurry preparation only or coating only. Please feel free to contact us if you have any requests. [Assistance tailored to your needs] ■ Selection of battery materials ■ Dispersion process ■ Coating process *For more details, please download the PDF or feel free to contact us.

• Prototype Services
• Contract manufacturing

We would like to introduce our "Dry Electrode (Development Product)" that we handle. By reducing the drying and solvent recovery processes, we lower costs and environmental impact. We are also considering proposals using our high technical capabilities and stable quality masterbatch cultivated through writing instrument development. Let's develop cell designs using this product together with us. 【Dry Process】 ■ Mixing ■ Sheet Formation ■ Electrode Formation ■ Winding *For more details, please download the PDF or feel free to contact us.

• Other polymer materials

Mitsubishi Pencil Co., Ltd. offers "Graphene Dispersion," which enables the creation of low-viscosity dispersion liquids through our dispersion technology. Graphene is characterized by its high electrical conductivity, mechanical strength and flexibility, and high specific surface area. The expected benefits in batteries include increasing the contact area for electrochemical reactions, enhancing the number of active sites for lithium-ion insertion and extraction, thereby improving capacity and efficiency. 【Characteristics of Graphene】 ■ High electrical conductivity ■ Mechanical strength and flexibility ■ High specific surface area ■ Thermal conductivity *For more details, please download the PDF or feel free to contact us.

• Other polymer materials

We offer a "PTFE binder for batteries" that is insoluble and fibrous, which fixes the active material and does not inhibit the action of ions. PTFE has excellent chemical resistance, extending the battery's lifespan and maintaining performance over a long period, even in environments exposed to corrosive electrolytes. Additionally, it has excellent thermal stability, allowing for stable battery performance even under high-temperature conditions. 【Features】 ■ High C-rate characteristics ■ Excellent cycle characteristics ■ Advantages in the manufacturing process *For more details, please download the PDF or feel free to contact us.

• Other polymer materials

Mitsubishi Pencil Co., Ltd. offers "CNT dispersion liquid" tailored to your needs. Our dispersion technology allows for state control. The solvents include water, NMP, butyl acetate, etc., and the CNTs include SWCNT, NWCNT, CNF, etc. In the application for battery materials, we have excellent properties. Please feel free to contact us if you have any requests. 【Sample Examples】 ■ Long-length / High-purity type: Concentration 0.4%, Resistance value ~1000Ω/□, Metal in CNT ~0.1% ■ High-concentration type: Concentration 3.0%, Resistance value ~10000Ω/□, Metal in CNT 1-2% ■ High-conductivity type: Concentration 0.2%, Resistance value ~100Ω/□, Metal in CNT 0.3-1% *For more details, please download the PDF or feel free to contact us.

• Other polymer materials

We would like to introduce examples of CNT development at our company. As applications of CNT, we have conductive additives for dispersions, electromagnetic wave absorption materials, antistatic materials, and strength-enhancing fillers for compounds. We can propose resin compounds with high moldability and electromagnetic wave absorption materials that can respond to various frequency ranges. Please feel free to contact us if you have any requests. 【Application Examples】 ■ Conductive Additives ■ Electromagnetic Wave Absorption Materials ■ Antistatic Materials ■ Strength-Enhancing Fillers *For more details, please download the PDF or feel free to contact us.

• Other polymer materials

Mitsubishi Pencil Co., Ltd. is capable of designing and manufacturing complex and intricate-shaped components and can provide them at a low cost. We assist in material synthesis with technologies for particle synthesis of colorants for writing instruments, microcapsule development, and more. By slurry-izing various materials and stabilizing them in solvents, we propose high-value-added dispersions. Additionally, leveraging the firing technology cultivated through the development of pencils and mechanical pencil leads, we can provide carbon materials with various properties and design and manufacture discharge mechanisms and containers regardless of the viscosity of liquids or the usage environment (temperature, atmospheric pressure, etc.). 【Our Open Innovation】 ■ Design, molding, and manufacturing ■ Material synthesis ■ Dispersion technology ■ Liquid discharge mechanisms ■ Coating ■ Carbon product firing technology *For more details, please download the PDF or feel free to contact us.

• Other polymer materials

"PFC" is a carbon product developed using sharp core and pencil core technology. It possesses characteristics such as electrical conductivity, thermal conductivity, heat resistance, corrosion resistance, lubricity, biocompatibility, and adsorption activity, which are features of carbon. We offer products such as "Carbon Ultrasonic Matching Layers" for various ultrasonic measurement devices and "Carbon Porous Bodies" that excel in chemical resistance and heat resistance. [Features] ■ High strength ■ High rigidity ■ Possesses characteristics of carbon such as electrical conductivity, thermal conductivity, heat resistance, corrosion resistance, lubricity, biocompatibility, and adsorption activity ■ Usable in a wide range of fields and applications *For more details, please refer to the related links or feel free to contact us.

• Other polymer materials

We would like to introduce our "CNT dispersion for battery materials." By utilizing the quality control system developed through our experience in writing instruments, we offer products with a high level of quality management for CNT dispersions as well. Additionally, we can adjust and coat cathode and anode slurries according to customer requirements. 【Features】 ■ Low viscosity and high solid content with a uniform particle size distribution ■ Quality management system tailored to requirements ■ Stable mass production quality ■ Comprehensive process design ■ Comprehensive process proposals *For more details, please refer to the related links or feel free to contact us.

• Other polymer materials

We would like to introduce our product, "PTFE Dispersion." This is a dispersion of fine PTFE particles obtained using our pigment dispersion technology. Depending on the idea, the excellent properties of PTFE can be imparted to materials. By combining with various materials, it becomes possible to impart the excellent properties of PTFE. 【Features】 ■ Improvement in water repellency and other properties is expected ■ Can be easily mixed with resins and varnishes ■ High stability ■ Can be returned to a usable state even after long-term storage *For more details, please refer to the related links or feel free to contact us.

• Other polymer materials

Our company offers proposals for organic pigment development technology cultivated through the development of writing instrument inks. Custom organic pigment development is also possible, and in the case of OLEDs, the requirements include insulation, durability, and colorability, without interfering with the lithography process. Please feel free to contact us if you have any requests. [Application Development] ■ Bank coloring materials for organic EL *For more details, please download the PDF or feel free to contact us.

• Other polymer materials

We propose CNT dispersion liquid that applies the pigment dispersion technology cultivated in our writing instrument development. We offer CNT dispersion liquid with "high concentration + low electrical resistance + low viscosity." Please feel free to contact us if you have any requests. 【Features】 ■ Capable of developing dispersions that are both high concentration and low viscosity ■ Capable of developing dispersions with low electrical resistance *For more details, please download the PDF or feel free to contact us.

• Other polymer materials

We propose functional nanoparticles that apply writing instrument development technology. By incorporating functional materials that do not dissolve in water into nanoparticles, it is possible to use them as a water-dispersed solution. *Unlike emulsification, this improves the durability and stability of the functional materials' effects. Please feel free to contact us if you have any requests. 【Application Development】 ■ Antimicrobial agents: Hydroponics, aquarium chemical solutions (safety, easy biodegradability) ■ Preservatives and insect repellents: Alternatives to BIT, MIT, C-MIT, toiletries ■ Antioxidants: Alternatives to hydrazine (safety), hydrolysis, and bubble suppression ■ Colorants: Color development for water-based inks *For more details, please download the PDF or feel free to contact us.

• Other polymer materials