Enhanced supercapacitor performance of bimetallic metal selenides via controllable synergistic engineering of composition

Three-dimensional Ni0.85Se@ZnSe nanostructures on carbon cloth for flexible asymmetric battery-type supercapacitors

“…At the same time, the gaps formed between adjacent nanosheets can serve as buffer spaces, thereby reducing the volume expansion effect during the redox reaction. 34 When the scan rate is as large as 20 mV s −1 , densely distributed Ni 0.85 Se@ZnSe-20 irregular particles can be observed (Fig. 2c), which are composed of large stacked nanosheets, indicating that the larger scan rate can involve nanosheets stacking and decrease the specific surface and active sites of the electrode material.…”

“…It can be seen that there is a clear interface in the heterostructure between Ni 0.85 Se and ZnSe, and the introduction of such a phase boundary generally causes a large number of lattice defects, distortions and dislocations. 34 Meanwhile, the existence of synergistic effects between different components in the heterogeneous interface will accelerate the diffusion and transfer of electrolyte ions and electrons. Therefore, the constructed heterogeneous structure can effectively improve the electrochemical performance of the electrode materials.…”

Bimetallic CoSe2/FeSe2 hollow nanocuboids assembled by nanoparticles as a positive electrode material for a high-performance hybrid supercapacitor

“…9C and Table S1 †). 2,[71][72][73][74] In the next step, the cycle life of the CoSe 2 /FeSe 2 HNCs@NiF||AC@NiF device was evaluated with 10 000 continuous GCD cycles at a current density of 20 A g −1 (Fig. 9D).…”

Hierarchical MoO3‐MnNi LDH@Cu(OH)2 Core‐Shell Nanorod Arrays Constructed through In‐Situ Oxidation Combined with a Hydrothermal Strategy for High‐Performance Energy Storage

“…Meanwhile, multiple metal elements are often selected to synthesize core-shell structure with synergistic effect of multiple metals to enhance the electrochemical properties. [12][13][14][15][16] Moreover, the hierarchical nanorods arrays can also directly serve as the electrodes of high-performance supercapacitor without the requirement of any conductive agent or binder. The electrode prepared by this synthesis method can significantly increase the electrical contact between the electroactive materials and the lamella, thus remarkably shortening the ion diffusion path.…”

“…In one respect, the unique hierarchical structure provides more readily accessible redox reaction sites. Meanwhile, multiple metal elements are often selected to synthesize core‐shell structure with synergistic effect of multiple metals to enhance the electrochemical properties [12–16] . Moreover, the hierarchical nanorods arrays can also directly serve as the electrodes of high‐performance supercapacitor without the requirement of any conductive agent or binder.…”