Superior electrochemical properties of spherical-like Co2(OH)3Cl-reduced graphene oxide composite powders with ultrafine nanocrystals

Novel synthesis method of cobalt hydroxycarbonate hydrate‐reduced graphene oxide composite microspheres for lithium‐ion battery anode

“…During the spray pyrolysis process, GO nanosheets were thermally reduced and crumpled to become reduced GO microspheres, and cobalt chloride was physically deposited on the surface of rGO. 3,11 The composite formed by spray pyrolysis was uniformly dispersed within the glycerol. The dropwise addition of the sodium carbonate monohydrate solution transformed the cobalt chloride embedded within the rGO into cobalt hydroxy carbonate hydrate (CoHC) nanocrystals.…”

“…Diverse compositions of anode materials have been explored for lithium-ion batteries (LIBs). [1][2][3][4][5][6] Transition metal compounds (TMCs) with multiple anions convert into individual TMCs during the first cycle. This makes TMCs with multiple anions exhibit superior electrochemical properties compared to single-component TMCs.…”

“…Its high conductivity, morphological property of high reactive surface area, and efficient penetration of electrolyte are expected to be complementary to the properties of multiple anion TMCs in cycling and rate performance. 3,11 In this study, spray pyrolysis process was first applied to synthesize CoHC-rGO. Composite microspheres of cobalt chloride and reduced graphene oxide (rGO) are synthesized by one-step spray pyrolysis, and then transformed into composites of CoHC and rGO by simple in-situ precipitation within the microspheres.…”

Recent Advances in Heterostructured Anode Materials with Multiple Anions for Advanced Alkali‐Ion Batteries

“…also reported the synthesis of Co 2 (OH) 3 Cl and reduced graphene oxide (rGO) composite microspheres by one‐pot spray pyrolysis process from colloidal spray solution of cobalt chloride salt and well‐dispersed graphene oxide (GO) nanosheets. [ 171 ] In the case of applying pure cobalt chloride solution, mixed phases of Co 2 (OH) 3 Cl and CoO were produced by one‐pot spray pyrolysis. On the other hand, the spray pyrolysis process using colloidal spray solution containing both cobalt chloride salt and GO nanosheets yielded a pure cobalt hydroxy chloride phase.…”

Crystal Structure and Magnetic and Magnetocaloric Properties of Cobalt Hydroxychlorides Co2(OH)4–xClx

“…In addition, the magnetic moments of the Co 2+ ions in the triangular planes are smaller than those of the ions in the Kagomé planes; the Co 2+ ions located in triangular and Kagomé planes are often referred to as “triangular Co 2+ ions” and “Kagomé Co 2+ ions”, respectively; these denominations will also be used in this paper. In addition to its appealing magnetic properties, Co 2 (OH) 3 Cl has recently been described as a promising electrode material for Li‐ion batteries and supercapacitors . This further prompts a systematic study of the composition extension of the Co 2 (OH) 4– x Cl x system according to the conditions of preparation, including a proper structural determination of the synthesized powders, since many of the properties of interest depend on the polycrystalline state of the product.…”