Unveiling origin of additional capacity of SnO2 anode in lithium-ion batteries by realistic ex situ TEM analysis

The application of nanostructured transition metal sulfides as anodes for lithium ion batteries

“…Different from the (dis)charge plateau belonged to conversion reaction at above 1.0 V, the long and sloped plateau is usually considered to be related with: (1) the interfacial charge between metallic nanoparticles and the Li 2 S matrix, (2) the decomposition of electrolytes (forming SEI film). This behavior may resemble those of metal oxides behaving at low voltage [35][36][37] . The initial Coulombic efficiency is relatively low (usually lower than 70%), which has become one of greatest problems hindering the practical application.…”

Novel Preparation of N‐Doped SnO2 Nanoparticles via Laser‐Assisted Pyrolysis: Demonstration of Exceptional Lithium Storage Properties

“…The reversibility of the conversion reaction (Equation ) is principally limited by the size of the particles, where nanosized structures often demonstrate more efficient conversion reversibility in LIBs . In contrast, the alloying process (Equation ) between Sn and Li 4.4 Sn is known to be highly reversible regardless of the size .…”

High Capacity and Reversibility of Oxygen‐Vacancy‐Controlled MoO3 on Cu in Li‐Ion Batteries: Unveiling Storage Mechanism in Binder‐Free MoO3−x Anodes

“…Instead of the Li‐ion intercalation reaction in the graphite anode, conversion and alloying reactions in transition metal oxides have been suggested simply because of their high theoretical capacity. Recently, there have been several reports showing even higher reversible capacity than the theoretical prediction, which is a particularly odd, but now common, phenomenon explained by the mechanisms based on interfacial reactions; for example, 1) reversible formation/disruption of organic solid‐electrolyte interphase (SEI) films, 2) interfacial charge storage between metal nanocrystals and Li salts, and 3) reversible reaction between Li and LiOH on the surface of metal oxides . Although the origin of these reactions is quite heterogeneous in nature, all the reactions take place at the interface of the electrodes.…”