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The FINANCIAL Long-lasting, quick-charging batteries are essential to the expansion of the electric vehicle market, but today’s lithium-ion batteries fall short of what’s needed they’re too heavy, too expensive and take too long to charge.
According to Harvard University, for decades, researchers have tried to harness the potential of solid-state, lithium-metal batteries, which hold substantially more energy in the same volume and charge in a fraction of the time compared to traditional lithium-ion batteries.
“A lithium-metal battery is considered the holy grail for battery chemistry because of its high capacity and energy density,” said Xin Li, associate professor of materials science at the Harvard John A. Paulson School of Engineering and Applied Science (SEAS). “But the stability of these batteries has always been poor.”
Stable, Lithium-Metal Solid-State Battery can be Charged, Discharged Many Times
Written by AZoMMay 13 2021
Quick-charging and long-lasting batteries are crucial to expand the electric vehicle sector but despite this fact, the current generation of lithium-ion batteries does not meet this requirement because they are extremely costly, quite bulky, and take a considerable amount of time to charge.
The first electrolyte (green) is more stable with lithium but prone to dendrite penetration. The second electrolyte, (brown) is less stable with lithium but appears immune to dendrites. In this design, dendrites are allowed to grow through the graphite and first electrolyte but are stopped when they reach the second. Image Credit: Second Bay Studios/Harvard SEAS.
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Long-lasting, quick-charging batteries are essential to the expansion of the electric vehicle market, but today s lithium-ion batteries fall short of what s needed they re too heavy, too expensive and take too long to charge.
For decades, researchers have tried to harness the potential of solid-state, lithium-metal batteries, which hold substantially more energy in the same volume and charge in a fraction of the time compared to traditional lithium-ion batteries. A lithium-metal battery is considered the holy grail for battery chemistry because of its high capacity and energy density, said Xin Li, Associate Professor of Materials Science at the Harvard John A. Paulson School of Engineering and Applied Science (SEAS). But the stability of these batteries has always been poor.
The road to affordable green hydrogen
Hydrogen produced from wind power can be cost-competitive in China
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Hydrogen produced from water using renewable energy could be key to a carbon-free future, but its production has long been thought too expensive for industrial-scale application.
Now, researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and the Harvard China Project have found that using wind power to produce hydrogen could provide a cost-competitive alternative to coal-dominated hydrogen manufacturing systems in China.
The research was published recently in the journal Renewable Energy.
“This study provides evidence for both the sustainability and affordability of green hydrogen production,” said Michael B. McElroy, the Gilbert Butler Professor of Environmental Studies, and senior author of the study. “Our findings could serve as a reference for the necessity for adjustments in the subsidies for