Thermally driven phase transition of cobalt hydroxide sheets via cobalt oxides to cobalt nanoparticles

Abstract

Transition metal oxides, which include many stoichiometric variations, are formed into various crystal structures by the atomic arrangement of cations and anions according to stoichiometric composition and are used for...

Imidazole‐Intercalated Cobalt Hydroxide Enabling the Li+ Desolvation/Diffusion Reaction and Flame Retardant Catalytic Dynamics for Lithium Ion Batteries

“…[18] Additionally, the TGA results (Figure S9) demonstrate a substantial weight loss around 200 °C for both MIÀ Co(OH) 2 samples, attributed to the transformation of cobalt hydroxide into cobalt oxide. [19] At 800 °C, MIÀ Co(OH) 2 -60-3 h and MIÀ Co(OH) 2 -RT-3 h exhibit residual weights of 82.58 % and 80.96 %, respectively, underscoring their high thermal stability. In summary, MIÀ Co(OH)2-60-3 h exhibits a more regular Angewandte Chemie morphology, larger size, and superior crystallinity, enhancing its conduciveness to the storage of lithium ions.…”

Imidazole‐Intercalated Cobalt Hydroxide Enabling the Li+ Desolvation/Diffusion Reaction and Flame Retardant Catalytic Dynamics for Lithium Ion Batteries

“…In the N 1s spectrum (Figure 1j), peaks at 399.5 eV and 406.8 eV correspond to Pyrrolic‐N and Oxidized‐N, indicating the presence of imidazole molecules on the Co(OH) 2 surface [18] . Additionally, the TGA results (Figure S9) demonstrate a substantial weight loss around 200 °C for both MI−Co(OH) 2 samples, attributed to the transformation of cobalt hydroxide into cobalt oxide [19] . At 800 °C, MI−Co(OH) 2 ‐60‐3 h and MI−Co(OH) 2 ‐RT‐3 h exhibit residual weights of 82.58 % and 80.96 %, respectively, underscoring their high thermal stability.…”

“…Consequently, MIÀ Co(OH) 2 -60-3 h exhibits an inhibitory effect on the thermal decomposition of the electrolyte to release CO gas, thereby reducing the release of toxic gases. [19,34] The lithium-ion batteries in this study, employing imidazole-intercalated Co(OH) 2 as the anode,…”

Synthesis and electrochemical evaluation of nickel hydroxide nanosheets with phase transition to nickel oxide

“…22,23 They can also be converted to oxide nanostructures easily, without the need for post-treatments. 12,13,24–27…”

“…22,23 They can also be converted to oxide nanostructures easily, without the need for post-treatments. 12,13,[24][25][26][27] TMHs contain a single metal species with the chemical formula M(OH) 2 (M = Ni, Co, Zn, etc. 28,29 ), which can be transformed into transition metal oxides with a variety of stoichiometries, [30][31][32][33][34] including a-Ni(OH) 2 and b-Ni(OH) 2 .…”