A team of researchers at Case Western Reserve University is building a flow battery prototype to provide cleaner, cheaper power.

The team, co-led by ECS member Bob Savinell, is working to scale up the technology in order develop a practical, efficient energy storage device that can store excess electricity and potentially augment the grid in light of a shift toward renewables.

With a $1.17 million federal grant, the team has started to build a 1-kilowatt prototype with enough power to run various, high-powered household devices for six hours.

“Intermittent energy sources, such as solar and wind, combined with traditional sources of coal and nuclear power, are powering the grid. To meet peak demand, we often use less-efficient coal or gas-powered turbines,” says Savinell, ECS Fellow and editor of the Journal of The Electrochemical Society. “But if we can store excess energy and make it available at peak use, we can increase the overall efficiency and decrease the amount of carbon dioxide emitted and lower the cost of electricity.”

One of the biggest barriers preventing the large-scale use of electrochemical energy storage devices has been the cost. To address this, Savinell and his team have been developing the flow battery with cheaper materials, such as iron and water.

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By: Jungwoo Ryoo, Pennsylvania State University

Cybersecurity concerns crop up everywhere you turn lately – around the election, email services, retailers. And academic institutions haven’t been immune to security breaches either. According to a recent report by VMware, almost all universities (87 percent) in the United Kingdom have been the victims of cyber crime. In general, from 2006 to 2013, 550 universities suffered data breaches. When higher ed breaches occur, attackers typically steal student information, intellectual property or research data. Among the criminals behind these attacks are nation-states and organized crime groups motivated by the economic gain.

A common knee-jerk reaction to a cyberattack – wherever it happens – is to clamp down on access and add more security control. For example, in 2005 after a major attack against a credit card processor affected 40 million customers, there were urgent calls for new mandatory encryption standards in the U.S. Senate. As paranoia sets in, a sense of urgency to do something about a possible next attack takes over, just like what happened in the University of California system. After a 2015 hack, the university administration started monitoring user traffic without consulting faculty and students (not to mention receiving their consent), resulting in a huge backlash.

As is so often the case, too much of anything is not good. Cybersecurity is a delicate balancing act between usability and countermeasures designed to reduce or prevent threats. A one-size-fits-all, or Procrustean, approach usually leads to lower productivity and a large group of unhappy users. And it’s particularly tricky to get the balance right in an academic setting.

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Recent safety concerns with lithium-ion batteries exploding in devices such as the Samsung Galaxy Note 7 phone and hoverboards have many energy researchers looking into this phenomenon for a better understanding of how batteries function when stressed.

A new open access paper published in the Journal of The Electrochemical Society provides some insight into these safety hazards associated with the Li-ion battery by taking a look inside the battery as it is overworked and overcharged.

Overcharging or overheating Li-ion batteries causes the materials inside to breakdown and produce bubbles of oxygen, carbon dioxide, and other gases. As more of these gases are produced, they begin to buildup and cause the battery to swell. That swelling can lead to explosion.

“The battery can either pillow a small amount and keep operating, pillow a lot and cease operation, or keep generating gas and rupture the cell, which can be accompanied by an explosion or fire,” Toby Bond, co-author of the paper, told New Scientist.

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After a short hiatus, Clean Technica’s Celantech Talk podcast has returned. For their first episode back, ECS member and podcast co-host Matthew Klippenstein discusses speed bumps in renewable energy, transforming the grid, and the demise of diesel.

Klippenstein is a 13 year veteran of the fuel cell industry with Ballard Power Systems. He was part of the 2007 group that received ECS’s Industrial Electrochemistry and Electrochemical Engineering Division New Electrochemical Technology Award, which has recognized significant advances in industrial electrochemistry since 1997. Listen to the podcast below.

PS: To learn more about science and some of the key contributors, download the ECS Podcast for free through the iTunes Store, SoundCloud, or our RSS Feed. You can also find us on Stitcher.

Google is going green.

Tech giant Google announced that it will run entirely on renewable energy in 2017. This will be a huge shift for the company that, according to the New York Times, consumed as much energy as the city of San Francisco in previous years.

Google states that both its data centers and offices will reach the 100 percent renewable energy mark in 2017, with the majority of power derived from wind and solar. According to a press release by the company, going green makes the most sense economically in addition to Google’s goal of reducing its carbon footprint to zero. With wind energy prices down 60 percent and solar down 80 percent over the past six years, Google’s move to renewables will both make an environmental impact and help the company cut operating expenses.

In part, Google is able to make this transition due to the number of large-scale deals the company has made with renewable energy producers over the past few years. Google has guaranteed to purchase energy from renewable start-ups, which then allows those start-ups to obtain the capital necessary to expand their business.

“We are the largest corporate purchaser of renewable energy in the world,” Joe Kava, Google’s senior vice president of technical infrastructure, told the New York Times. “It’s good for the economy, good for business and good for our shareholders.”

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ECS Fellow and technical editor of the Journal of The Electrochemical Society, Charles Hussey, recently added one more item to his list of career accomplishments.

The esteemed scientist and integral member of the University of Mississippi’s chemistry and biochemistry department has been named the new associate dean for research and graduate education at the university’s College of Liberal Arts.

“I am very excited about the chance to serve in this role and anxious to get started,” Hussey said in a release.

Hussey states that since the appointment of Dean Lee Cohen, the university began to shift in a new direction focused on research and graduate education. “I want to be part of helping him move the college forward in these areas,” he said.

With his extensive scientific background and experience serving as a chair of a department, Hussey will be looking to reflect those experiences in his new position. He will also be aiming to evaluate current issues students face pertaining to research engagement, scholarship, and graduate education.

“Once I have a sense of the issues, then we will work with other departments to develop long-range strategies that make use of our available resources to attack these roadblocks,” said Hussey, the 2014 winner of ECS’s Max Bredig Award in Molten Salt and Ionic Liquid Chemistry. “I also see potential for the growth of new graduate programs in the college.”

In addition to his new appointment, Hussey plans to continue his research into electrochemistry and transport properties of ionic liquids and molten salts.

Global energy demands are predicted to reach 46 terawatts by 2100. That number is a far reach from the 18 terawatts of energy currently generated around the world. According to one expert in the field, a major shift in the way we produce and consume energy is necessary in order to meet future demands.

Meng Tao, ECS member and Arizona State University professor, discussed how society could move toward meeting those demands at the PRiME 2016 meeting, where he presented his paper, “Terawatt Solar Photovoltaics: Roadblocks and Our Approaches.”

“We just cannot continue to consume fossil fuels the way we have for the last 200 years,” Tao told ECS. “We have to move from a fossil fuel infrastructure to a renewable infrastructure.”

For Tao, the world’s society cannot set on a path of “business as usual” by producing energy via coal, oil, and natural gas. And while solar energy has experienced a growth rate of nearly 45 percent in the last decade, it still only accounts for less than one percent of all electricity generated.

The shift to solar

Historically, solar technology soars when oil prices are at their highest. This is especially true during the oil embargo of the 1970s. During that time, private and public investments began to shift away from fossil fuels and toward solar and other renewable energies. That trend emerged again in the early 2000s when oil prices skyrocketed to a record-setting $140 per barrel.

“In the 1970s, the motivation to invest in solar and other forms of renewable energy was geopolitical,” Tao says. “Now, that motivation tends to focus more on the environment and sustainability.”

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The San Francisco Section is currently accepting nominations for the following award:

Daniel Cubicciotti Student Award: established in 1994 to assist a deserving student in Northern California in pursuing a career in the physical sciences or engineering. Qualified candidates will be full or part-time graduate or advanced undergraduate student(s) in good standing at a university or college in Northern California.

The award consists of an etched metal plaque and a $2,000 prize which is intended to assist with the educational expenses. In addition to the main award, up to two honorable mentions will be given consisting of a framed certificate and a $500 prize.

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By: Richard E. Peltier, University of Massachusetts Amherst

In an experiment sponsored by Intel, a Portland, Oregon household uses a low-cost sensor to measure air quality and stream real-time data online. Intel Free Press/Wikipedia, CC BY-SA

Until recently, measuring air pollution was a task that could be performed only by trained scientists using very sophisticated – and very expensive – equipment. That has changed with the rapid growth of small, inexpensive sensors that can be assembled by almost anyone. But an important question remains: Do these instruments measure what users think they are measuring?

A number of venture capital-backed startup or crowd-funded groups are marketing sensors by configuring a few dollars’ worth of electronics and some intellectual property – mainly software – into aesthetically pleasing packages. The Air Quality Egg, the Tzoa and the Speck sensor are examples of gadgets that are growing in popularity for measuring air pollutants.

These devices make it possible for individuals without specialized training to monitor air quality. As an environmental health researcher, I’m happy to see that people are interested in clean air, especially because air pollution is closely linked with serious health effects. But there are important concerns about how well and how accurately these sensors work.

At their core, these devices rely on inexpensive, and often uncertain, measurement technologies. Someday small sensors costing less than US$100 may replace much more expensive research-grade instruments like those used by government regulators. But that day is likely to be far away.

New territory for a known technology

Pollution sensors that measure air contaminants have been on the market for many years. Passenger cars have sophisticated emission controls that rely on data collected by air sensors inside the vehicles. These inexpensive sensors use well-established chemical and physical methods – typically, electrochemistry or metal oxide resistance – to measure air contaminants in highly polluted conditions, such as inside the exhaust pipe of a passenger vehicle. And this information is used by the vehicle to improve performance.

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Just over ten years ago, the number of electric vehicles on the road could be counted in the hundreds. Now, more than 1.3 million EVs have been deployed across the globe. But even as EVs become a stronger force in the transportation sector, many buyers still cite one major deterrent in going electric: range anxiety.

Range anxiety refers to the fear that during longer trips, the EV battery may run out of energy and leave drivers stranded without a charging station. However, Ford, BMW, and VW are planning to but this fear to rest in Europe where they’re planning to develop a networking of charging stations along major highways.

The car companies believe this implementation of these stations will help enable long-rage travel and facilitate the mass-market adoption of EVs. Because current EVs cannot exceed a 300 mile driving range on single charge, the establishment of ultra-fast charging stations will help take away some of the anxiety drivers feel behind the wheel.

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