Posted on Leave a comment

The need to develop super capacitors

iHemp Washington
‘The center of all things hemp’
The need to develop super capacitors

With over 500,00 uses for the hemp plant claimed it may come as no surprise that none of the plant need go to waste. Researchers are using so called waste fibres and fines from the decortication of the stem to create lower-cost energy storage.

Alternet Systems, a company dedicated to energy storage and EV tech, has purchased land in New York to grow and process hemp as a component in supercapacitors, a form of energy storage that can be charged much faster than lithium-ion or any other type of battery.

Using hemp for energy storage

In February 2019, Alternet Systems hired David Mitlin, a professor at New York’s Clarkson University who has been researching hemp for energy storage for years. Mitlin’s research uses hemp bast, the bark of the hemp plant and a waste product during hemp production, as a replacement for graphene, a much more expensive material, in supercapacitors.

Because of its strength and light weight, manufacturers use graphene, a material composed of an atom-thick layer of carbon, to create nanosheets for capacitor electrodes.

However, it’s quite expensive. The hemp bast Mitlin uses is much cheaper than graphene and, on top of that, Mitlin says their hemp supercapacitors have been able to store 12 watt-hours of energy per kilogram – over 2x as high as conventional supercapacitors.

By heating the hemp bast for 24 hours at 350 F, then adding even more heat afterwards, Mitlin found they can turn the bast into carbon nanosheets, just like the conventional graphene nanosheets.

In a 2014 interview with American Chemical Society, Mitlin noted: “We’re past the proof-of-principle stage for the fully functional supercapacitor,” he says. “Now we’re gearing up for small-scale manufacturing.”

Elon Musk, always the visionary, predicted that supercapacitors, not hydrogen, would be the breakthrough for electric vehicles.

“Ultracapacitors charge and discharge in seconds, have a lifetime of up to 500 times that of lithium-ion batteries, and are highly reliable.”

Supercapacitors charge quickly, but can’t store much energy

Like lithium-ion batteries, supercapacitors are able to store electricity, though each has its own unique benefits and drawbacks that limit their applications.

Li-ion batteries enjoy fantastic energy density, meaning they’re able to hold large amounts of electricity at one time – about 100 to 200 watt-hours per kilogram. They’re also relatively inexpensive, making lithium a good complement for renewable energy systems.

However, lithium-ion batteries aren’t perfect. They take a long time to recharge. They suffer from a limited lifespan due to the wearing down of internal components. And while they can store lots of electricity, they can’t provide a lot of power in a single instant.

Supercapacitors, on the other hand, can charge in seconds and provide huge amounts of power instantaneously. They enjoy almost limitless lifecycle, as there are no internal components that break down, and they can charge and discharge in much wider range of temperatures.

However, supercapacitors have been left on the sideline due to extremely high cost and low energy density. While lithium-ion batteries can hold 100 to 200 watt-hours of electricity per kilogram, supercapacitors can only hold about 5 watt-hours per kg.

This makes supercapacitors worthless as energy storage for renewable systems, as they can’t hold enough energy to really be useful. However, in situations where short bursts of high energy are needed, supercapacitors are the perfect fit. For example, supercapacitors in hybrid buses equipped with regenerative braking are able to quickly harness that energy produced during braking, then immediately release it seconds later to help the hybrid bus accelerate.

Like in the hybrid buses above, supercapacitors work best when paired with a primary energy source, like a gas-fueled engine or batteries. The engine or battery provides the consistent power, and the supercapacitor provides short bursts of high power when needed.

Are supercapacitors the next step in energy storage?

If we were able to increase the energy density of supercapacitors -and decrease the cost-so they were on par with lithium-ion batteries, they could change the face of electric industry. We’d have extremely flexible energy storage with near-endless lifespan. Talk about cost-effectiveness!

Obviously, the allure is enough to peak serious investment in the technology. Energy storage and EV tech companies and researchers are actively trying to solve these supercapacitor issues. Alternet Systems is hoping Mitlin can help bring down the cost (and increase the energy density) of supercapacitors by replacing the expensive graphene with low-cost hemp bast fibre.

Link: Hemp – batteries 

Posted on Leave a comment

10 Reasons to swith the production economy to hemp

1. Sustainability and Environmental Benefits

Hemp is a remarkably sustainable crop, requiring minimal water, pesticides, and fertilizers compared to conventional crops. Its rapid growth cycle allows for multiple harvests per year, further enhancing its sustainability.

2. Economic Diversification and Job Creation

The cultivation, processing, and utilization of hemp can generate significant economic opportunities, creating new jobs and businesses in various sectors, including agriculture, textiles, construction, and biofuels.

3. Resource Efficiency and Waste Reduction

Hemp can replace a wide range of environmentally harmful materials, such as conventional plastics, paper, and cotton, reducing our reliance on these resources and minimizing waste generation.

4. Soil Regeneration and Improvement

Hemp has the remarkable ability to improve soil health by replenishing nutrients and organic matter, making it a valuable tool for sustainable agriculture.

5. Environmentally Friendly Building Materials

Hempcrete, a composite material made from hemp fibers and lime, is a sustainable and eco-friendly alternative to conventional building materials, offering excellent insulation, soundproofing, and fire resistance.

6. Natural and Sustainable Personal Care Products

Hemp-based personal care products provide a gentle and natural alternative to conventional products, offering skin and hair care benefits without harsh chemicals or environmental impact.

7. Nutritious and Sustainable Foods

Hemp seeds are a rich source of protein, fiber, and essential fatty acids, making hemp-based foods a healthy and sustainable addition to our diet.

8. Circular Production Streams and Waste Reduction

Hemp’s versatility allows for a wide range of applications, reducing the need for single-use plastics and other disposable materials, promoting circular production streams.

9. Innovative Applications and Research

Hemp offers a wealth of potential applications across various industries, from textiles and construction to pharmaceuticals and biofuels, fostering innovation and research.

10. Contribution to a Cleaner and Greener Planet

Switching to sustainable hemp production can significantly reduce our environmental impact, promoting a cleaner and healthier planet for future generations.

Posted on Leave a comment

How does the international cooperative Hemp Nation support employee development and learning?


The international cooperative Hemp Nation takes a comprehensive approach to employee development and learning, fostering a culture of continuous growth and knowledge sharing. Here’s how they empower their team members to excel:

  1. Cultivating a Passion for Hemp: Hennepnatie instills a deep understanding of hemp’s versatility and potential within its workforce. Employees undergo comprehensive training on the cultivation, processing, and utilization of hemp, ensuring they grasp the intricacies of the industry and the company’s mission.
  2. Investing in Skills Development: Hennepnatie recognizes the importance of upskilling and reskilling its employees to adapt to evolving industry trends and advancements. The cooperative offers training programs, workshops, and mentorship opportunities to enhance their technical expertise and leadership skills.
  3. Fostering Collaboration and Innovation: Hennepnatie encourages collaborative learning and knowledge exchange among employees. Regular team-building exercises, project-based learning, and knowledge-sharing sessions promote cross-functional interactions and stimulate innovative ideas.
  4. Enabling Personal and Professional Growth: Hennepnatie supports employees in pursuing personal and professional development goals. They offer financial assistance for training courses, certifications, and networking events, enabling individuals to expand their knowledge and skills beyond their immediate roles.
  5. Championing Diversity and Inclusion: Hennepnatie embraces a diverse and inclusive workplace, ensuring that all employees feel valued and empowered to participate in learning opportunities. This inclusive environment fosters a sense of belonging and encourages active engagement in knowledge sharing.
  6. Promoting Open Communication: Hennepnatie fosters a culture of open communication and feedback. Employees are encouraged to share their ideas, challenges, and learnings, creating a supportive environment for continuous improvement.
  7. Recognizing and Rewarding Achievements: Hennepnatie recognizes and rewards employees for their contributions to knowledge sharing, skill development, and innovation. This recognition system encourages employees to actively engage in learning and contribute to the organization’s growth.