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Expanded graphite as a superior anode for sodium-ion batteries

Green Car Congress

Researchers at the University of Maryland, with colleagues at the University of Illinois at Chicago, report on a new method for expanding graphite for use as a superior anode for sodium-ion batteries in a paper in Nature Communications. to enlarge the interlayer lattice distance to accomodate the larger sodium ions.

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Researchers use in situ NMR spectroscopy to provide insight into silicon expansion in Li-ion batteries

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A major barrier to the use of high energy capacity silicon in a lithium-ion battery is the volumetric expansion of silicon under lithiation and delithiation, which results in electrode degradation and capacity fade. Silicon (shown in grey) is capable of holding 10 times as many lithium ions (shown in pink) as currently-used anodes.

Li-ion 199
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Researchers propose new VO2 cathode material for aluminum-ion rechargeable battery

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A team from the University of Science and Technology Beijing is proposing a new super-valent battery based on aluminium ion intercalation and deintercalation. The battery exhibits excellent reversibility and relatively long cycle life compared to earlier Al-ion efforts, the team said. Wang et al. Click to enlarge.

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Debunking the Lithium "Mining" FUD

Plug In India

Team PluginIndia The Lithium mining FUD (Fear, Uncertainty, Doubt) created by some paid media organizations and random YouTube channels is so bad, that many people read headlines of such articles and assume that Lithium mining is the worst thing in the world and is worse than extracting and refining 10,000 liters of oil used by an average ICE car.

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New direct borohydride fuel cell increases peak power density by factor of 1.7–3.7

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Researchers at Xi’an Jiaotong University in China have developed a new direct borohydride fuel cell (DBFC) that shows a peak power density of 663 mW·cm -2 at 65 °C (149 °F)—an increase in power density by a factor of 1.7 Source: Ma et al. 2010) Click to enlarge. compared to classic DBFCs. —Yang et al.

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OSU smart membrane could enable new category of high-energy, high-power energy storage for EVs

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A team at the Ohio State University has developed a membrane that regulates bi-directional ion transport across it as a function of its redox state and that could be used as a programmable smart membrane separator in future supercapacitors and redox flow batteries. — Herya and Sundaresan.

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WMG researchers use graphene girders to improve performance of Si anodes in Li-ion batteries

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Researchers at WMG (Warwick Manufacturing Group), The University of Warwick (UK) have developed Silicon-Few Layer Graphene (Si-FLG) composite electrodes as an effective approach to replacing graphite in the anodes of lithium-ion batteries. Qianye Huang, Melanie J. Loveridge, Ronny Genieser, Michael J.

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