New Design Points a Path to the ‘Ultimate’ Battery

By University of Cambridge | Science Daily

Battery Symbol

Many of the technologies we use every day have been getting smaller, faster and cheaper each year — with the notable exception of batteries. Apart from the possibility of a smartphone which lasts for days without needing to be charged, the challenges associated with making a better battery are holding back the widespread adoption of two major clean technologies: electric cars and grid-scale storage for solar power.

Lithium-oxygen, or lithium-air, batteries have been touted as the ‘ultimate’ battery due to their theoretical energy density, which is ten times that of a lithium-ion battery. Such a high energy density would be comparable to that of gasoline — and would enable an electric car with a battery that is a fifth the cost and a fifth the weight of those currently on the market to drive from London to Edinburgh on a single charge.

However, as is the case with other next-generation batteries, there are several practical challenges that need to be addressed before lithium-air batteries become a viable alternative to gasoline.

Now, researchers from the University of Cambridge have demonstrated how some of these obstacles may be overcome, and developed a lab-based demonstrator of a lithium-oxygen battery which has higher capacity, increased energy efficiency and improved stability over previous attempts.

Their demonstrator relies on a highly porous, ‘fluffy’ carbon electrode made from graphene (comprising one-atom-thick sheets of carbon atoms), and additives that alter the chemical reactions at work in the battery, making it more stable and more efficient. While the results, reported in the journal Science, are promising, the researchers caution that a practical lithium-air battery still remains at least a decade away.

“What we’ve achieved is a significant advance for this technology and suggests whole new areas for research — we haven’t solved all the problems inherent to this chemistry, but our results do show routes forward towards a practical device,” said Professor Clare Grey of Cambridge’s Department of Chemistry, the paper’s senior author.

Many of the technologies we use every day have been getting smaller, faster and cheaper each year — with the notable exception of batteries. Apart from the possibility of a smartphone which lasts for days without needing to be charged, the challenges associated with making a better battery are holding back the widespread adoption of two major clean technologies: electric cars and grid-scale storage for solar power.

“In their simplest form, batteries are made of three components: a positive electrode, a negative electrode and an electrolyte,” said Dr Tao Liu, also from the Department of Chemistry, and the paper’s first author.

[Read more here]

Story Source:

The above post is reprinted from materials provided by University of Cambridge. Note: Materials may be edited for content and length.


Journal Reference:

  1. T. Liu, M. Leskes, W. Yu, A. J. Moore, L. Zhou, P. M. Bayley, G. Kim, C. P. Grey. Cycling Li-O2 batteries via LiOH formation and decomposition. Science, 2015; 350 (6260): 530 DOI: 10.1126/science.aac7730

University of Cambridge. “New design points a path to the ‘ultimate’ battery.” ScienceDaily. ScienceDaily, 29 October 2015. <www.sciencedaily.com/releases/2015/10/151029152629.htm>.

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Robert O’Leary, JD BARA, has had an abiding interest in alternative health products & modalities since the early 1970’s & he has seen how they have made people go from lacking health to vibrant health. He became an attorney, singer-songwriter, martial artist & father along the way and brings that experience to his practice as a BioAcoustic Soundhealth Practitioner, under the tutelage of the award-winning founder of BioAcoustic Biology, Sharry Edwards, whose Institute of BioAcoustic Biology has now been serving clients for 30 years with a non-invasive & safe integrative modality that supports the body’s ability to self-heal using the power of the human voice. Robert brings this modality to serve clients in Greater Springfield (MA), New England & “virtually” the world, with his website, www.romayasoundhealthandbeauty.com. He can also be reached at [email protected]

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  1. 846414435380494@facebook.com' Revolution de Mind says:

    Nice 🙂

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