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Safe battery tech prevents “thermal runaway”

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150108-stanford-battery-1-100637348-largeIf it gets too hot, get out of the battery! Researchers at Stanford University have developed a lithium-ion battery that shuts down automatically as it begins to overheat.

Lithium-ion batteries are used in nearly all portable electronics. They’re light, can store a lot of energy and are easily recharged, but they are also susceptible to overheating if damaged. A short circuit in the battery often leads to fire. A recent article in Nature Energy by a team of Stanford researchers reveals a safe battery design that features “a fast and reversible thermoresponsive polymer switching material that can be incorporated inside batteries to prevent thermal runaway.”

The new Stanford battery uses a polyethylene film that has embedded particles of nickel with nanoscale spikes. Researchers coated the spikes with graphene, a conducting material, so that electricity can flow over the surface. When the temperature rises the film expands, and at about 70 degrees Celsius (160 degrees Fahrenheit) the conducting spikes no longer touch each other, breaking the circuit – causing the battery to shut down.

Once the battery shuts down, the runaway thermal reaction is avoided and the battery cools; eventually the nickel spikes are brought back into contact and the electricity flow resumes.

“We can even tune the temperature higher or lower depending on how many particles we put in or what type of polymer materials we choose,” said Zhenan Bao, a professor of chemical engineering at Stanford and a member of the research team.

The Nature Energy article [Nature Energy 1, Article number: 15009 (2016) doi:10.1038/nenergy.2015.9] says: “Batteries with this self-regulating material built in the electrode can rapidly shut down under abnormal conditions such as overheating and shorting, and are able to resume their normal function without performance compromise or detrimental thermal runaway. Our approach offers 103–104 times higher sensitivity to temperature changes than previous switching devices.”

This has the potential of averting the catastrophic fires seen in hoverboards, laptops and aircraft.

The article was written by the researchers Zheng Chen, Po-Chun Hsu, Jeffrey Lopez, Yuzhang Li, John W. F. To, Nan Liu, Chao Wang, Sean C. Andrews, Jia Liu, Yi Cui and Zhenan Bao.

Image: Stanford researchers use a polyethylene film in lithium-ion batteries to shut down the battery if it gets too hot. Credit: Stanford University/IDGNS

Written by William DiBenedetto

9 February, 2016 at 5:30 am

The sordid whack-a-mole nature of climate change denial

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It’s all about doubt when it comes to climate change, no matter what the science is telling us. The playbook is tried and true as illustrated in the 2014 film, Merchants of Doubt—if you can create enough doubt about the science and the harmful effects of tobacco, asbestos or fossil fuels, basically you’re home free. Instead of solving an obvious problem, companies in those industries can obscure and obstruct, and continue to make truckloads of money.

And it’s still happening. In a report from the Desmog Blog this month, “Study Finds The ‘Era of Climate Science Denial Is Not Over,'”  Graham Readfearn writes: “Conservative think tanks in the United States are a sort of ‘ground zero’ for the production of doubt about the links between fossil fuel burning and dangerous climate change.

“These think tanks produce reports, hold conferences, write books, go on television, produce columns and blogs and generally and liberally splatter the public discourse with talking points.

“You’ll have heard their manufactured doubt everywhere. ‘CO2 is great for the planet… fossil fuels are good… climate scientists are wrong… the world has been hotter in the past… cutting emissions will kill the economy.’ That sort of thing.”

He points to a new study published in the journal Global Environmental Change that says, “the era of climate science denial is not over.”

Dr. Travis Coan, of the University of Exeter, and Dr Constantine Boussalis, of Trinity College Dublin, analyzed 16,000 articles, reports, transcripts, letters, reviews and press releases from the websites of 19 conservative think tanks, mainly based in the U.S, who work on climate change.

In the study, Boussalis and Coan discuss how commentators had been speculating about an end of climate science denial for more than a decade. But analyzing documents from 1998 until mid-2013, Boussalis and Coan found that think tanks had in recent years been focusing less on policy and more on attacking the science.

Why change the playbook if it works so well?

Republican Bob Inglis a conservative former South Carolina congressman, lost a bid for re-election in 2010 after telling a radio host that he believed humans were contributing to climate change. “The most enduring heresy that I committed was saying the climate change is real,” he told PBS’ FRONTLINE.

Inglis saw through the thick fog machines of doubt and denial, to his cost. He closed the Merchants of Doubt, with moving and spot analysis of why it so hard to embrace the reality of climate change:

He’s a hero.

Written by William DiBenedetto

25 January, 2016 at 6:00 am

COP21 a cop-out or an opt-in?

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COP ParisIt’s been awhile, but in the great scheme of things not that long, and my absence here lately is of no great import. Things have changed in the past few months, including an engagement, a time-consuming book project and a re-think of my assocoation with TriplePundit. It’s all great-to-good-to-exhausting, but without getting into details, the gist is that I’ll concentrate more on this blog space in the future. Maybe.

First, some venting about the climate change summit that concluded in December, COP21. Remember? It already seems like a long time ago! The results were better than expected and encouraging, but still probably too little too late. Coverage and punditry was mixed, which is better than saying the effort failed. Time will tell on that. Yes, it’s a climate accord among a slew of nations, but unenforceable.

Here’s Bill Mckibben, founder of 350.org, the global grass-roots climate campaign, writing in the New York Times: “In the hot, sodden mess that is our planet as 2015 drags to a close, the pact reached in Paris feels, in a lot of ways, like an ambitious agreement designed for about 1995, when the first conference of parties to the United Nations Framework Convention on Climate Change took place in Berlin.

“Under its provisions, nations have made voluntary pledges to begin reducing their carbon emissions. These are modest — the United States, for instance, plans to cut carbon dioxide emissions by 2025 by 12 to 19 percent from their levels in 1990. As the scrupulous scorekeepers at Climate Action Tracker, a nongovernment organization, put it, that’s a ‘medium’ goal ‘at the least ambitious end of what would be a fair contribution.'”

If all parties keep their promises, and if you expect that to happen I’ve got a bridge in Brooklyn you can buy, the planet will warm by an estimated 6.3 degrees Fahrenheit, or 3.5 degrees Celsius, above preindustrial levels. “That is way, way too much,” McKibben says. “We are set to pass the 1 degree Celsius mark this year, and that’s already enough to melt ice caps and push the sea level threateningly higher.”

The irony is, he continues, an agreement like this adopted at the first climate conference in 1995 “might have worked.” Read the rest of this entry »

Written by William DiBenedetto

11 January, 2016 at 8:00 am

On a personal note…

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51jmR9VKBEL._SX331_BO1,204,203,200_Willowdown Books is pleased to announce the poem

 wow you have

by

William DiBenedetto

has been chosen for inclusion in the international poetry anthology

THE POETIC BOND V

CELBRATING FIVE YEARS OF GLOBAL POETRY

ISBN 978-1517783808

Publication Date 21 October 2015

Available from www.thepoeticbond.com and across all AMAZON Channels  

 

Summary Review

Wow you have “Neat observation piece, on the nature of books, having books, and the attraction of words.” 

(Trevor Maynard, Editor, The Poetic Bond Series) 

William DiBenedetto is a freelance writer and editor living in and loving Seattle since 1994. Born many years ago in New York City, he grew up in Northern Virginia and worked as a journalist in Washington D.C. He graduated from the University of Virginia with a degree in English. 

Previously William has appeared in The Poetic Bond Series with his poems

“3am overdraft blues”, “Triton Beach” and “Angelo’s Hat” 

The Poetic Bond V

POETRY THAT BONDS US

1:            You can contact William for an interview and/or for a copy of the poem

“wow you have”

at the following  email  wrdibenedetto@gmail.com

2:            For a PDF PRESS COPY of complete anthology, contact Trevor Maynard

“THE POETIC BOND V”

at the following  email: poetry@trevormaynard.com      phone:  07966 079968

Editors’ Notes

  1. Thirty-six poets from 11 countries were selected through a submission process in which there were no restrictions on form, style, length of subject; instead the choices made were on the basis of emergent themes and congruency in the pool of work; a snapshot of the poetry of new media NOW, seeking to capture the zeitgeist of the moment.
  1. Trevor Maynard, UK based poet and writer, manager of Poetry, Review and Discuss Group, a major poetry group on LinkedIn. His new poetry collection is KEEP ON KEEPIN’ ON (was published in 2012). He is also the author of several plays.  Further information at http://www.trevormaynard.com
  1. The Poets of The POETIC BOND V (2015) are; Amanda Judd (Virginia, USA), Belinda DuPret (West Sussex, UK) Betty Bleen (Ohio, USA), Bonnie Flach (California, USA), Bonnie Roberts (Alabama, USA), Brian McCully (Victoria, Australia), Caroline Glen (Queensland, Australia) , Christine Anderes (New York, USA) Cigeng Zhang (China), Claire Mikkelsen (Alabama, USA), Clark Cook (British Columbia, Canada), Diane Wend (Dorset, UK), Rhona Davidson (West Yorks, UK), Frances Ayers (New York, USA), Freddie Ostrovskis (Derbyshire, UK), Gilbert Franke (Texas, USA), GK Grieve (London, UK), Ian Colville (Bedfordshire, UK), James Sutton (IOWA, USA), Jill Langlois (Illinois, USA), Joseph Simmons (Maryland, USA), Julie Clark (Kent, UK), Kewayne Wadley (Tennessee, USA), Leander Seddon (New South Wales, Australia), Linda Mills (Oregon, USA), Marli Moreira (Brazil), Nana Tokatli (Greece), Neetu Malik (USA), Peter Alan Soron (Cheshire, UK) Pushpita Awasthi (Netherlands), RH Peat (California, USA), Robin Ouzman Hislop (Spain), Sonia Kilvington (Cyprus), Trevor Maynard (Surrey, UK), Wendy Joseph (California, USA), William DiBenedetto (Seattle, Washington, USA)

Written by William DiBenedetto

2 November, 2015 at 5:55 am

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Pope Francis: Care for our common home (4)

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Laudato Si'_cover_ Thomas CizauskasHere’s the next installment of our close read of Pope Francis’ Encyclical Letter on climate change, Laudato Si’.

(Note: emphasis added by me)

Climate as a common good

The climate is a common good, belonging to all and meant for all. At the global level, it is a complex system linked to many of the essential conditions for human life. A very solid scientific consensus indicates that we are presently witnessing a disturbing warming of the climatic system. In recent decades this warming has been accompanied by a constant rise in the sea level and, it would appear, by an increase of extreme weather events, even if a scientifically determinable cause cannot be assigned to each particular phenomenon. Humanity is called to recognize the need for changes of lifestyle, production and consumption, in order to combat this warming or at least the human causes which produce or aggravate it. It is true that there are other factors (such as volcanic activity, variations in the earth’s orbit and axis, the solar cycle), yet a number of scientific studies indicate that most global warming in recent decades is due to the great concentration of greenhouse gases (carbon dioxide, methane, nitrogen oxides and others) released mainly as a result of human activity. Concentrated in the atmosphere, these gases do not allow the warmth of the sun’s rays reflected by the earth to be dispersed in space. The problem is aggravated by a model of development based on the intensive use of fossil fuels, which is at the heart of the worldwide energy system. Another determining factor has been an increase in changed uses of the soil, principally deforestation for agricultural purposes. (Para. 23) Read the rest of this entry »

Written by William DiBenedetto

5 October, 2015 at 6:00 am

Pope Francis: Care for our common home (3)

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Pope Francesco I_Jeffrey BrunoHere’s the next installment of our close reading of Pope Francis’ Encyclical Letter on climate change, Laudato Si’.

Chapter One: What Is Happening To Our Common Home

The continued acceleration of changes affecting humanity and the planet is coupled today with a more intensified pace of life and work which might be called “rapidification”. Although change is part of the working of complex systems, the speed with which human activity has developed contrasts with the naturally slow pace of biological evolution. Moreover, the goals of this rapid and constant change are not necessarily geared to the common good or to integral and sustainable human development. Change is something desirable, yet it becomes a source of anxiety when it causes harm to the world and to the quality of life of much of humanity. (Para. 18)

Following a period of irrational confidence in progress and human abilities, some sectors of society are now adopting a more critical approach. We see increasing sensitivity to the environment and the need to protect nature, along with a growing concern, both genuine and distressing, for what is happening to our planet. Let us review, however cursorily, those questions which are troubling us today and which we can no longer sweep under the carpet. Our goal is not to amass information or to satisfy curiosity, but rather to become painfully aware, to dare to turn what is happening to the world into our own personal suffering and thus to discover what each of us can do about it. (Para. 19) Read the rest of this entry »

Written by William DiBenedetto

21 September, 2015 at 8:00 am

Pope Francis: Care for our common home (2)

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Laudato Si'_cover_ Thomas CizauskasHere’s the next installment of our close read of Pope Francis’ Encyclical Letter on climate change, Laudato Si’.

We left off last time at Paragraph 8.

In the Saint Francis of Assisi section, whose name Pope Francis too k as his “guide and inspiration” when he was elected Bishop of Rome:

I believe that Saint Francis is the example par excellence of care for the vulnerable and of an integral ecology lived out joyfully and authenti­cally. He is the patron saint of all who study and work in the area of ecology, and he is also much loved by non-Christians. He was particularly concerned for God’s creation and for the poor and outcast…  Francis helps us to see that an integral ecol­ogy calls for openness to categories which tran­scend the language of mathematics and biology, and take us to the heart of what it is to be hu­man. Just as happens when we fall in love with someone, whenever he would gaze at the sun, the moon or the smallest of animals, he burst into song, drawing all other creatures into his praise… If we approach nature and the environment without this openness to awe and wonder, if we no longer speak the language of fraternity and beauty in our relationship with the world, our at­titude will be that of masters, consumers, ruth­less exploiters, unable to set limits on their im­mediate needs. By contrast, if we feel intimately united with all that exists, then sobriety and care will well up spontaneously.  (Paragraphs 10 and 11)

The he finishes his introductory matter with My appeal:

The urgent challenge to protect our com­mon home includes a concern to bring the whole human family together to seek a sustainable and integral development, for we know that things can change…Humanity still has the ability to work together in building our common home…Particu­lar appreciation is owed to those who tirelessly seek to resolve the tragic effects of environmen­tal degradation on the lives of the world’s poor­est. Young people demand change. They wonder how anyone can claim to be building a better fu­ture without thinking of the environmental crisis and the sufferings of the excluded. (Paragraph 13)

I urgently appeal, then, for a new dialogue about how we are shaping the future of our plan­et. We need a conversation which includes every­one, since the environmental challenge we are undergoing, and its human roots, concern and affect us all. The worldwide ecological move­ment has already made considerable progress and led to the establishment of numerous or­ganizations committed to raising awareness of these challenges. Regrettably, many efforts to seek concrete solutions to the environmental cri­sis have proved ineffective, not only because of powerful opposition but also because of a more general lack of interest. Obstructionist attitudes, even on the part of believers, can range from de­nial of the problem to indifference, nonchalant resignation or blind confidence in technical solu­tions. We require a new and universal solidarity. As the bishops of Southern Africa have stated: “Everyone’s talents and involvement are needed to redress the damage caused by human abuse of God’s creation”.  (Paragraph 14)

It is my hope that this Encyclical Letter, which is now added to the body of the Church’s social teaching, can help us to acknowledge the appeal, immensity and urgency of the challenge we face. I will begin by briefly reviewing several aspects of the present ecological crisis, with the aim of drawing on the results of the best scientif­ic research available today, letting them touch us deeply and provide a concrete foundation for the ethical and spiritual itinerary that follows. I will then consider some principles drawn from the Judaeo-Christian tradition which can render our commitment to the environment more coherent. I will then attempt to get to the roots of the pres­ent situation, so as to consider not only its symp­toms but also its deepest causes. This will help to provide an approach to ecology which respects our unique place as human beings in this world and our relationship to our surroundings. In light of this reflection, I will advance some broader proposals for dialogue and action which would involve each of us as individuals, and also affect international policy. Finally, convinced as I am that change is impossible without motivation and a process of education, I will offer some inspired guidelines for human development to be found in the treasure of Christian spiritual experience. (Paragraph 15)

With that introductory work done, we’ll look into Chapter One: What Is Happening To Our Common Home, next time.

Image: Laudato Si’ (cover) by Thomas Cizauskas via Flickr CC

Written by William DiBenedetto

14 September, 2015 at 6:00 am

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