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Luniusem t1_is27ujw wrote

Reply to comment by ElephantsAreHeavy in South Korean researchers say they have developed an anode-free lithium-ion battery that is 40% more energy dense than existing batteries and will enable EVs to travel 630km (390 miles) on a single charge. by lughnasadh

Anode-less architectures have been around for a while, it basically just means that the anode is formed in-situ during charge, but the as built battery only has a current collector onto/into which the anodic active material will go, as opposed to having an active material anode already present in the uncharged state.

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funkysnave t1_is2z25u wrote

Isn't that just what is referred to as a half-cell in most literature?

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Luniusem t1_is3isxc wrote

Different concepts, half-cell means your only testing half the cell, usually by means of an experimental setup where the opposite electrode is not limiting, either by just using a surplus of active material or using some standard electrode that doesn't correspond to your proposed chemistry. You can't really physically run a half cell, rather, it refers to a test setup where only one electrode is really being tested. Anode-less designs have a fully active anode once they are at non zero state of charge, they just don't have active material on the "anode" as built. Metal plating batteries are often built like this, were you just have a current collector of some other material, and the cell only goes to it's theoretical potential once you start depositing the anodic material on the current collector.

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