Although everyone knows that coal-based energy is a thing of the past, declarations about nuclear power plants somehow do not want to enter into force.
No other power-generating device raises as much concern as the nuclear reactor. Because of this, until recently the future of the entire energy sector has been determined by its past.
Utilizing nuclear waste converted to diamonds, the company's batteries will reportedly last thousands of years in some cases.
- Nuclear reactor parts converted to radioactive carbon-14 diamonds produce energy.
- To keep them safe, the carbon-14 diamonds are encased in a second protective diamond layer.
- The company predicts batteries for personal devices could last about nine years.
Waste not<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzU5NDQyMS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYyNTIyNTQxOX0.LnHH-Uj9up_14gGLMii9OpWUj3qZ4kQ3aJ9vr3YNPBQ/img.jpg?width=980" id="db1dc" class="rm-shortcode" data-rm-shortcode-id="4d54eef4ec5902b331313218f4413738" data-rm-shortcode-name="rebelmouse-image" alt="NBD battery" />
NDB's battery as it might look as a circuit-board component
Image source: NDB<p>The nuclear waste from which NDB plans to make it batteries are reactor parts that have become radioactive due to exposure to nuclear-plant fuel rods. While not considered high-grade nuclear waste—that would be spent fuel—it's still very toxic, and there's a lot of it in a nuclear generator. According to the <a href="https://inis.iaea.org/collection/NCLCollectionStore/_Public/32/039/32039321.pdf" target="_blank">International Atomic Energy Agency</a>, the "core of a typical graphite moderated reactor may contain 2000 tonnes of graphite." (A tonne is one metric ton, or about 2,205 lbs.)</p><p>The graphite contains the carbon-14 radioisotope, the same radioisotope used by archaeologists for carbon dating. It has a <a href="https://www.radioactivity.eu.com/site/pages/RadioCarbon.htm" target="_blank">half-life of 5,730 years</a>, eventually transmuting into <a href="https://www.sciencemag.org/news/2008/01/solving-carbon-14-mystery" target="_blank" rel="noopener noreferrer">nitrogen 14</a>, an anti-neutrino, and a beta decay electron, whose charge piqued NDB's interest as a potential means of producing electricity.</p><p>NDB purifies the graphite and then turns it into tiny diamonds. Building on existing technology, the company says they've designed their little carbon-14 diamonds to produce a significant amount of power. The diamonds also act as a semiconductor for collecting energy, and as a heat sink that disperses it. They're still radioactive, though, so NDB encases the tiny nuclear power plants within other inexpensive, non-radioactive carbon-12 diamonds. These glittery lab-made shells serve as, well, diamond-hard protection at the same time as they contain the carbon-14 diamonds' radiation.</p><p>NDA plans to build batteries in a range of <a href="https://en.wikipedia.org/wiki/List_of_battery_sizes#Lithium-ion_batteries_(rechargeable)" target="_blank">standard</a>—AA, AAA, 18650, and 2170—and custom sizes containing several stacked diamond layers together with a small circuit board and a supercapacitor for collecting, storing, and discharging energy. The end result is a battery, the company says, that will last a <em>very</em> long time.</p><p>NDB predicts that if a battery is used in a low-power context, say, as a satellite sensor, it could last 28,000 years. As a vehicle battery, they anticipate a useful life of 90 years, much longer than any single vehicle will last—the company anticipates that one battery could conceivably provide power for one set of wheels after another. For consumer electronics such as phones and tablets, the company expects about nine years of use for a battery.</p><p>The company's prospective investor video explains their process in greater detail.</p>
Maybe a very big deal<span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="72e7ea41a1df50a12187f618eb343efc"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/ksMXbhftBbM?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span><p>"Think of it in an iPhone," NDB's Neel Naicker <a href="https://newatlas.com/energy/nano-diamond-battery-interview-ndb/?itm_source=newatlas&itm_medium=article-body" target="_blank">tells New Atlas</a>. "With the same size battery, it would charge your battery from zero to full, five times an hour. Imagine that. Imagine a world where you wouldn't have to charge your battery at all for the day. Now imagine for the week, for the month… How about for decades? That's what we're able to do with this technology."</p><p>NDB anticipates having a low-power commercial version on the market in a couple of years, followed by a high-powered version in about five. If all goes as planned, NDB's technology could constitute a major step forward, providing low-cost, long-term energy to the world's electronics and vehicles. The company says, "We can start at the nanoscale and go up to power satellites, locomotives."</p><p>The company also expects their batteries to be competitively priced compared to current batteries, including lithium ion, and maybe even cheaper once they're being produced at scale—owners of nuclear waste may even pay the company to take their toxic problem off their hands.</p><p>One company's waste becomes another's diamonds.</p>
By leveraging the difference between lit and shadowed areas, a new energy source perfect for wearables is invented.
- Mobile devices used both indoors and out may benefit from a new energy collection system that thrives on mixed and changing lighting conditions.
- Inexpensive new collection cells are said to be twice as efficient as commercial solar cells.
- The system's "shadow effect" would also maker it useful as a sensor for tracking traffic.
For all of its promise, solar energy depends on the capture of light, and the more the better. For residents of sunny climes, that's great, with rooftop collection panels, and solar farms built by utilities in wide open, sunny spaces that can provide power to the rest of us. Now, though, a team of scientists at the National University of Singapore (NUS) has announced success at deriving energy from…shadows.
We've got plenty of them everywhere. "Shadows are omnipresent, and we often take them for granted," says research team leader Tan Swee Ching, who notes how shadows are usually anathema for energy collection. "In conventional photovoltaic or optoelectronic applications where a steady source of light is used to power devices, the presence of shadows is undesirable, since it degrades the performance of devices." His team has come up with something quite different, and Tan claims of their shadow-effect energy generator (SEG) that, "This novel concept of harvesting energy in the presence of shadows is unprecedented."
The research is published in the journal Energy & Environmental Science.
How it works
Image source: Royal Society of Chemistry/NUS
The energy produced by the SEG is generated from the differential between shadowed and lit areas. "In this work," says Tan. "We capitalized on the illumination contrast caused by shadows as an indirect source of power. The contrast in illumination induces a voltage difference between the shadow and illuminated sections, resulting in an electric current."
SEG cells are less expensive to produce than solar cells. Each SEG cell is a thin film of gold on a silicon wafer, and an entire system is a set of four of these cells arrayed on a flexible, transparent plastic film. Experiments suggest the system, in use, is twice as efficient as commercial solar cells.
An SEG cell's shadow effect works best when it is half in light and half in shadow, "as this gives enough area for charge generation and collection respectively," says co-team leader Andrew Wee. When the SEG is entirely in shadow or in light, it doesn't produce a charge.
Gold in them that shadows
To be sure, the amount of energy that NUS researchers have thus far extracted is small, but it's enough to power a digital watch. The researchers envision the SEG system harvesting ambient light to power smart phones and AR glasses that are used both outdoors and indoors. While such devices can run on solar batteries, solar is only replenished outdoors, and the SEG could "scavenge energy from both illumination and shadows associated with low light intensities to maximize the efficiency of energy harvesting," says Tan. It seems clear that we're on the cusp of the era of wearables — AR visionwear, smart fabrics, smart watches, and so on — and so Tan considers the arrival of the SEG "exciting and timely."
The researchers also note an additional application for which the SEG seems a natural: It can function as a self-powered sensor for monitoring moving objects. The shadow caused by a passing object would trigger the SEG sensor, which can then record the event.
Next up for the team is investigating constructing cells using other, less costly materials than gold to make them even less expensive to produce.
Sweden tops the ranking for the third year in a row.
What does COVID-19 mean for the energy transition? While lockdowns have caused a temporary fall in CO2 emissions, the pandemic risks derailing recent progress in addressing the world's energy challenges.
WEF Fostering Effective Energy Transition 2020 edition<h3>The 10 countries most prepared for the energy transition</h3><p>Sweden tops the overall ETI ranking for the third consecutive year as the country most ready to transition to clean energy, followed by Switzerland and Finland. There has been little change in the top 10 since the last report, which demonstrates the energy stability of these developed nations, although the gap with the lowest-ranked countries is closing.</p><p>Top-ranked countries share a reduced reliance on imported energy, lower energy subsidies and a strong political commitment to transforming their energy sector to meet climate targets.</p><p>The UK and France are the only two G20 economies in the top 10 however, which is otherwise made up of smaller nations.</p><p>Powerful shocks Outside the top 10, progress has been modest in Germany. Ranked 20th, the country has committed to phasing out coal-fired power plants and moving industrial output to cleaner fuels such as hydrogen, but making energy services affordable remains a struggle.</p>
Kevin Frayer/Getty Images<h3>China currently has the world's largest solar PV capacity</h3><p>China, ranked 78th, has made strong advances in controlling CO2 emissions by switching to electric vehicles and investing heavily in solar and wind energy - it currently has the world's largest solar PV and onshore wind capacity. Alongside China, countries including Argentina, India and Italy have shown consistent strong improvements every year. Gains over time have also been recorded by Bangladesh, Bulgaria, Kenya and Oman, among others.</p><p>But high energy-consuming countries including the US, Canada and Brazil show little, if any, progress towards an energy transition.</p><p>In the US (ranked 32nd), moves to establish a more sustainable energy sector have been hampered by policy decisions. Neighbouring Canada grapples with the conflicting demands of a growing economy and the need to decarbonize the energy sector.</p><p>The COVID-19 pandemic serves as a reminder of the impact of external shocks on the global economy. As climate change increases the likelihood of weather extremes such as floods, droughts and violent storms, the need for more sustainable energy practices is intensified.</p><p>Policy-makers need to develop a robust framework for energy transition at local, national and international levels, capable of guarding against such shocks.</p><p>"The coronavirus pandemic offers an opportunity to consider unorthodox intervention in the energy markets, and global collaboration to support a recovery that accelerates the energy transition once the acute crisis subsides," says Roberto Bocca, Head of Energy & Materials at the World Economic Forum.</p><p>"This giant reset grants us the option to launch aggressive, forward-thinking and long-term strategies leading to a diversified, secure and reliable energy system that will ultimately support the future growth of the world economy in a sustainable and equitable way."</p><p>Reprinted with permission of the <a href="https://www.weforum.org/" target="_blank">World Economic Forum</a>. Read the <a href="https://www.weforum.org/agenda/2020/05/energy-transition-index-2020-eti-clean-sustainable-power/" target="_blank">original article</a>.</p>
Ever smell a durian fruit? Don't. Think of it as nature's stinky battery.
- New research finds that jackfruit and durian, often called the world's smelliest fruit, make outstanding supercapacitors.
- Supercapacitors are useful because they can be used as infinitely rechargeable batteries.
- The study, published in the Journal of Energy Storage, also demonstrates the development of carbon aerogels for the bodies of the fruit batteries.
We need a better battery<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMjg2MTg0NC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY2NjE0MjMxM30.jLSKsz0hw27iRXte7_umWhstpczqh2IMT8ab6HUMUNw/img.jpg?width=980" id="00b1c" class="rm-shortcode" data-rm-shortcode-id="048195b51dcd498c33fcfe0867d50b04" data-rm-shortcode-name="rebelmouse-image" alt="box of batteries" />
Image source: PandaMath/Shutterstock<p>Researchers have been trying to move away from existing lithium-ion batteries that contain chemicals whose interactions produce electricity. When those chemicals are depleted, what's left is a little bundle of toxic waste.</p><p>A capacitor, on the other hand, stores energy by building up a static electricity charge on the surfaces of two metal plates. (You might think of how static electricity builds up on your hair when you rub a balloon against your head, for a sense of how this works.) However, capacitors can't hold a lot of energy, nor can they hold it for long. Still, they are infinitely rechargeable, unlike lithium-ion solutions.</p><p>Supercapacitors begin to address some of these problems. They typically contain metal plates which have more surface-area and are coated with a second layer of activated charcoal or a similar material. This makes them better at soaking up and holding a charge. Still, supercapacitors are expensive to produce and have their own stability issues.</p><p>So now imagine one made of durian fruit or jackfruit. Gomes' paper describes the potential:</p><p style="margin-left: 20px;"><em>"The structural precision of natural biomass with their hierarchical pores, developed over millions of years of biological evolution, affords an outstanding resource as a template for the synthesis of carbon-based materials. Their integrated properties of high surface area, in-plane conductivity and interfacial active sites can facilitate electrochemical reactions, ionic diffusion and high charge carrier density."</em></p>