Anchored CoCO3 on peeled graphite sheets toward high-capacity lithium-ion battery anode

Nano‐single‐crystal‐constructed submicron MnCO3 hollow spindles enabled by solid precursor transition combined Ostwald ripening in situ on graphene toward exceptional interfacial and capacitive lithium storage

“…As anodes of LIBs, the bulk structured MnCO 3 microparticles possess poor electronic conductivity and have the limitation of severe volume variation, leading to sluggish electrochemical reactivity, severe electrode pulverization, and rapid capacity fading. 36…”

“…However, the conventional precipitation synthesis routes with soluble metal salts as precursors generally give rise to large‐size bulk structured MCO 3 microparticles, due to the fast crystal growth rate and the low solubility of MCO 3 crystals in water. As anodes of LIBs, the bulk structured MnCO 3 microparticles possess poor electronic conductivity and have the limitation of severe volume variation, leading to sluggish electrochemical reactivity, severe electrode pulverization, and rapid capacity fading 36 $$${\text{MCO}}_{3}+2{\text{Li}}^{+}+2{{\rm{e}}}^{-}\leftrightarrow {\text{Li}}_{2}{\text{CO}}_{3}\,+{\rm{M}}({\rm{M}}=\text{Mn},\text{Fe},\text{Co}\,\text{or}\,\text{Ni}),$$$ $$$\,{\text{Li}}_{2}{\text{CO}}_{3}+(4+0.5x){\text{Li}}^{+}+(4+0.5x){e}^{-}\leftrightarrow 3{\text{Li}}_{2}{\rm{O}}+0.5{\text{Li}}_{x}{{\rm{C}}}_{2}(x=0,1\unicode{x02007}\text{or\unicode{x02007}}2).$$$…”