Cobalt: A Precarious Supply Chain
How does your mobile phone last for 12 hours on just one charge?
It’s the power of cobalt, along with several other energy metals, that keeps your lithium-ion battery running.
The only problem? Getting the metal from the source to your electronics is not an easy feat, and this makes for an extremely precarious supply chain for manufacturers.
Our infographic today comes to us from LiCo Energy Metals, and it focuses on where this important ingredient of green technology originates from, and the supply risks associated with its main sources.
What is Cobalt?
Cobalt is a transition metal found between iron and nickel on the periodic table. It has a high melting point (1493°C) and retains its strength to a high temperature.
Similar to iron or nickel, cobalt is ferromagnetic. It can retain its magnetic properties to 1100°C, a higher temperature than any other material. Ferromagnetism is the strongest type of magneticism: it’s the only one that typically creates forces strong enough to be felt, and is responsible for the magnets encountered in everyday life.
These unique properties make the metal perfect for two specialized high-tech purposes: superalloys and battery cathodes.
High-performance alloys drive 18% of cobalt demand. The metal’s ability to withstand intense temperatures and conditions makes it perfect for use in:
- Turbine blades
- Jet engines
- Gas turbines
- Permanent magnets
Batteries drives 49% of demand – and most of this comes from cobalt’s usage in lithium-ion battery cathodes:
|Type of lithium-ion cathode||Cobalt in cathode||Spec. energy (Wh/kg)|
The three most powerful cathode formulations for li-ion batteries all need cobalt. As a result, the metal is indispensable in many of today’s battery-powered devices.
- Mobile phones (LCO)
- Tesla Model S (NCA)
- Tesla Powerwall (NMC)
- Chevy Volt (NMC/LMO)
The Tesla Powerwall 2 uses approximately 7kg, and a Tesla Model S (90 kWh) uses approximately 22.5kg of the energy metal.
The Cobalt Supply Chain
Cobalt production has gone almost straight up to meet demand, and production has more than doubled since the early 2000s.
But while the metal is desired, getting it is the hard part:
1. No native cobalt has ever been found in nature.
There are four widely-distributed ores that exist, but almost no cobalt is mined from them as a primary source.
2. Most cobalt production is mined as a by-product.
|Mine source||% cobalt production|
This means it is hard to expand production when more is needed.
3. Most production occurs in the DRC, a country with elevated supply risks:
|Rest of World||52,785||43.0%|
(Source: CRU, estimated production for 2017, tonnes)
The Future of Cobalt Supply
Companies like Tesla and Panasonic need reliable sources of the metal, and right now there aren’t many failsafes.
The U.S. hasn’t mined cobalt in significant volumes since 1971, and the USGS reports that the United States only has 301 tonnes of the metal stored in stockpiles.
The reality is that the DRC produces about half of all cobalt, and it also holds approximately 47% of all global reserves.
Why is this a concern for end-users?
1. The DRC is one of the poorest, corrupt, and most coercive countries in the planet.
- 151st out of 159 countries in the Human Freedom Index
- 176th out of 188 countries on the Human Development Index
- 178th out of 184 countries in terms of GDP per capita ($455)
- 148th out of 169 countries in the Corruption Perceptions Index
2. The DRC has had more deaths from war since WWII than any other country on the planet.
Recent wars in the DRC:
- First Congo War (1996-1997) – A foreign invasion by Rwanda that overthrew the Mobutu regime.
- Second Congo War (1998-2003) – The bloodiest conflict in world history since WW2 with 5.4 million deaths.
3. Human Rights in Mining
The DRC government estimates that 20% of all cobalt production in the country comes from artisanal miners – independent workers who dig holes and mine ore without sophisticated mines or machinery.
There are at least 100,000 artisanal cobalt miners in the DRC, and UNICEF estimates that up to 40,000 children could be in the trade. Children can be as young as seven years old, and they can work up to 12 hrs with physically demanding work, earning $2 per day.
Meanwhile, Amnesty International alleges that Apple, Samsung, and Sony fail to do basic checks in making sure the metal in their supply chains did not come from child labor.
Most major companies have vowed that any such practices will not be tolerated in their supply chains.
Where will tomorrow’s supply come from, and will the role of the DRC eventually diminish? Will Tesla achieve its goal of a North American supply chain for its key metal inputs?
Mining exploration companies are already looking to regions like Ontario, Idaho, British Columbia, and the Northwest Territories to find tomorrow’s deposits:
Ontario: Ontario is one of the only places in the world where cobalt-primary mines that have existed. This camp is nearby the aptly named town of Cobalt, Ontario, which is located halfway between Sudbury – the world’s “Nickel Capital”, and Val-d’Or, one of the most famous gold camps in the world.
Idaho: Idaho is known as the “Gem State” while also being known for its silver camps in Couer D’Alene – but it has also been a cobalt producer in the past.
BC: The mountains of British Columbia are known for their rich gold, silver, copper, zinc, and met coal deposits. But cobalt often occurs with copper, and some mines in BC have produced cobalt in the past.
Northwest Territories: Cobalt can also be found up north, as the NWT becomes a more interesting mineral destination for companies. 160km from Yellowknife is a gold-cobalt-bismuth-copper deposit being developed.
Soaking up the Sun: Visualizing the Changing Patterns of Daylight in One Year
The length of your days can change depending on the seasons, and where you are on Earth. Watch how these patterns unfold over a year.
The darkest days are upon the residents of the Northern Hemisphere as daylight dwindles and the night lingers longer. Meanwhile, those in the Southern Hemisphere bask in their warmest and longest days—and those at the Equator continue to observe consistent days and nights.
These changing lengths of days and nights depend on where you are on Earth and the time of year. The tilt of the Earth’s axis and its path around the sun affect the number of daylight hours.
Today’s post highlights two simple and elegant animations that help demonstrate how different latitudes experience the sun’s light over the course of one year. The first comes from Reddit user harplass, while the second comes from data scientist Neil Kaye.
Longer and Shorter Days
The Ancient Greeks envisioned the movement of the sun as a Titan named Helios who rode across the sky in a horse-drawn chariot, illuminating the known world below. A rosy-fingered dawn would herald his imminent arrival, while the arrival of the dusk god Astraeus, ever on Helios’ heels, marked the passage of day into night.
Today, time is not at the whims of Greek mythology but by the measurable and consistent movement of celestial bodies. A day on Earth is 24 hours long, but not every day has 12 hours of daylight and 12 hours of night. The actual time of one Earth rotation is a little shorter–about 23 hours and 56 minutes.
Daytime is shorter in winter than in summer, for each hemisphere. This is because the Earth’s imaginary axis isn’t straight up and down, it is tilted 23.5 degrees. The Earth’s movement around this axis causes the change between day and night.
During summer in the Northern Hemisphere, daylight hours increase the farther north you go. The Arctic gets very little darkness at night. The seasonal changes in daylight hours are small near the Equator and more extreme close to the poles.
Length of a Rotation: Equinoxes and Solstices
There are four events that mark the passing stages of the sun, equinoxes and solstices.
The two solstices happen June 20 or 21 and December 21 or 22. These are the days when the sun’s path in the sky is the farthest north or south from the Equator. A hemisphere’s winter solstice is the shortest day of the year and the summer solstice the year’s longest.
In the Northern Hemisphere the June solstice marks the start of summer: this is when the North Pole is tilted closest to the sun, and the sun’s rays are directly overhead at the Tropic of Cancer.
The December solstice marks the start of winter when the South Pole is tilted closest to the sun, and the sun’s rays are directly overhead the Tropic of Capricorn.
The equinoxes happen around March 21 and September 23. These are the days when the sun is exactly above the Equator, which makes day and night of equal length.
Stand in the Place Where You Are
It is always darkest before the dawn, and every passing of solstice marks a time of change. As the Northern Hemisphere heads into the winter holiday season, it also marks the advent of longer days and the inevitable spring and summer.
The lengths of days and nights are constantly changing, but every one will get their time in the sun, at some point.
Mapped: The 1.2 Billion People Without Access to Electricity
A surprising number of people around the world are still living without access to reliable electricity. This map shows where they live.
For anyone reading this article, the benefits of electricity need not be explained.
Access to electricity is now an afterthought in most parts of the world, so it may come as a surprise to learn that 16% of the world’s population — an estimated 1.2 billion people — are still living without this basic necessity. Lack of access to electricity, or “energy poverty”, is the ultimate economic hindrance as it prevents people from participating in the modern economy.
Where are people still living in the dark, and how are these energy challenges being addressed? Let’s dive in.
Where the Grid Reaches, and Beyond
At this point in time, a majority of countries have 100% electricity access rates, and many more have rates above 95%. This includes most of the world’s high-population countries, such as China, Brazil, and the United States.
India is fast approaching that benchmark for access. The massive country has made great strides in a short amount of time, jumping from a 70% to 93% access rate in a single decade.
Meanwhile, North Korea is an obvious outlier in East Asia. The Hermit Kingdom’s lack of electrification isn’t just conspicuous in the data — it’s even visible from space. The border between the two Koreas is clearly visible where the dark expanse of North Korea runs up against the glow of South Korea’s urban areas.
It’s been estimated that more than half of North Korea’s people are living in energy poverty.
Africa’s Access to Electricity
In 1995, a mere 20% of sub-Saharan Africa’s population had access to power. While today’s figure is above 40%, that still means roughly 600 million people in the region are living without access to electricity.
Not surprisingly, energy poverty disproportionately impacts rural Africans. Nearly all of the countries with the lowest levels of electricity access have rural-majority populations:
|Global Rank||Country||Electricity Access||Rural Population|
|#190||🇸🇱 Sierra Leone||23%||58%|
|#188||🇧🇫 Burkina Faso||25%||71%|
Nonexistent and unreliable electricity isn’t just an issue confined to rural Africa. Even Nigeria — Africa’s largest economy — has an electrification rate of just 54%.
Where there is an electrical grid, instability is also causing problems. A recent survey found that a majority of Nigerian tech firms face 30 or more power outages per month, and more than half ranked electricity as a “major” or “severe” constraint to doing business.
This is pattern that is repeated in a number of countries in Africa:
Mini-Grids, Big Impact
It has taken an average of 25 years for countries to move from 20% to 80% access, so history suggests that it may be a number of years before sub-Saharan Africa fully catches up with other parts of the world. That said, Vietnam was able to close that gap in only nine years.
Traditional utility companies continue to make inroads in the region, but it might be a smaller-scale solution that brings electricity to people in harder-to-reach rural villages.
Between 2009 and 2015, solar PV module prices fell by 80%, ushering in a new era of affordability. Solar powered mini-grids don’t just have the potential to bring electricity to new markets, it can also replace the diesel-powered generators commonly used in Africa.
For the 600 million people in sub-Saharan Africa who are still unable to fully participate in the modern world, these innovations can’t come soon enough.
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