Abstract
In the most recent issue of Nature Communications , William Gent, William Chueh, and co-authors examine in depth the electronic structure and redox processes that occur during cycling of Li 1.17 Ni 0.21 Co 0.08 Mn 0.54 O 2 and reveal an important new insight that suggests oxygen redox is coupled with local transition metal migration. Aided by a suite of cutting-edge characterization methods, the authors formulate a clear and unprecedented view of both local and averaged structure evolution during cycling.
Highlights
In the most recent issue of Nature Communications, William Gent, William Chueh, and co-authors examine in depth the electronic structure and redox processes that occur during cycling of Li1.17Ni0.21Co0.08Mn0.54O2 and reveal an important new insight that suggests oxygen redox is coupled with local transition metal migration
The energy density of a cell is determined by the product of the Li chemical potential difference and the number of Li that can be shuttled per cycle between the anode and cathode
The prospect of a significant capacity boost from anion redox would be a tremendous windfall in terms of both energy density and cost and represents a rare realistic opportunity for a step-change advance in lithium ion (Li-ion) battery technology
Summary
In the most recent issue of Nature Communications, William Gent, William Chueh, and co-authors examine in depth the electronic structure and redox processes that occur during cycling of Li1.17Ni0.21Co0.08Mn0.54O2 and reveal an important new insight that suggests oxygen redox is coupled with local transition metal migration. The energy density of a cell is determined by the product of the Li chemical potential difference (defining the voltage, V) and the number of Li that can be shuttled per cycle (defining the reversible capacity, reported in mAh/g) between the anode and cathode.
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