Anisotropic particle synthesis and characterization for lithium-ion battery electrode materials via precursor precipitate growth inhibitor

Multicomponent two-layered cathode for thick sintered lithium-ion batteries

“…When looking at the pellet before sintering, the XRD pattern reflected a blend of both LMO and LCO materials, with distinct peaks present for each material and consistent with previous reports. 20,21,27 LMO had an Fd 3̄ m spinel structure 28 with a crystalline size of ∼50 nm and strain of 0.0027 determined from XRD analysis; LCO had a R 3̄ m layered structure 29 with a crystalline size of ∼72 nm and strain of 0.0016 determined from XRD analysis, and the peaks were consistent with contributions from each of these phases. Although the heat treatment was relatively mild (heated to 600 °C and held for 1 h), after heat treatment the LCO peaks shifted towards lower values, suggesting an increased lattice size for layered LCO, which could possibly be attributed to the substitution of Co (ionic radius of 56 pm) by Mn (ionic radius of 63 pm).…”

“…LiMn 2 O 4 (LMO) active material powder was synthesized according to previous reports. 20,21 100 mM of sodium oxalate (Na 2 C 2 O 4 , Fisher Chemical) and 10 mM of sodium citrate dihydrate (Na 3 C 6 O 7 H 5 Á2H 2 O, Sigma-Aldrich), were dissolved into 400 mL of deionized (DI) water at the same time using a 1000 mL beaker. Within a separate 1000 mL beaker 100 mM of manganese sulfate monohydrate (MnC 2 O 4 Á2H 2 O, Fisher Chemical) was dissolved into 400 mL DI water.…”

Enhancing low electronic conductivity materials in all active material electrodes through multicomponent architecture

“…Methods & materials 2.1 Active material powder synthesis LNMO was synthesized via high temperature lithiation and calcination of a transition metal oxalate precursor. [34][35][36] The precursor was synthesized using precipitation methods. 200 mM of sodium oxalate (Na 2 C 2 O 4 ) was dissolved into 400 mL of deionized (DI) water within a 1000 mL beaker.…”

Stable Multicomponent Multiphase All Active Material Lithium-Ion Battery Anodes

“…Lithium-ion batteries (LIB) for decades have shaped human society. − Further improving LIBs and increasing energy density continues to be a focus of researchers . A general approach for higher energy density is to increase electrode areal loading, resulting in reduction of inactive components such as current collectors at the cell level. , However, conventional composite electrodes fabricated using slurry casting have inherent mechanical limitations at thickness over ∼100 μm .…”