Facial design and synthesis of CoSx/Ni-Co LDH nanocages with rhombic dodecahedral structure for high-performance asymmetric supercapacitors

Hierarchical Micro‐Nanoclusters of Bimetallic Layered Hydroxide Polyhedrons as Advanced Sulfur Reservoir for High‐Performance Lithium–Sulfur Batteries

“…Preparation of NiCo-LDH and Co-LDH: First, solution containing 0.365 g Ni(NO 3 ) 2 •6H 2 O in 50 mL ethanol (solution A) and suspension containing 100 mg ZIF67 in 50 mL ethanol (suspension B) were prepared, respectively, and heated to 78°C. The solution A was then slowly added into suspension B, and refluxed at 78°C for 1 h. [25] After cooling down naturally, the light green precipitate was collected, washed with ethanol, and dried overnight at 70°C to obtain NiCo-LDH. For comparison, the monometallic Co-LDH was prepared through the same procedures but using 0.376 g Co(NO 3 ) 2 •6H 2 O instead of Ni(NO 3 ) 2 •6H 2 O as the etching agent.…”

Chemical Modifications of Layered Double Hydroxides in the Supercapacitor

“…The obtained MnO 2 @NiCo LDH hollow nanocages achieved a large specific capacitance of 1436 F g −1 at 1 A g −1 . Similarly, Guan et al [ 147 ] used ZIF‐67 as the template to prepare CoS x nanocages. Subsequently, the CoS x nanocages were used as the template to prepare the NiCo LDH after the Ni(NO 3 )·6H 2 O was added.…”

One-step facile synthesis of nickel–chromium layered double hydroxide nanoflakes for high-performance supercapacitors

“…[7][8][9] On the one hand, the unique spatial structure of LDHs provides a large surface area to transfer charge and capture electrons. 8,10 On the other hand, the high dispersion of variable valence metal ions on the lamella can provide abundant electrochemically active sites, resulting in high pseudocapacitance. [11][12][13] Over the past few decades, LDHs have attracted considerable attention for use as electrochemical supercapacitors.…”