Ultra-dispersed nickel–cobalt sulfides on reduced graphene oxide with improved power and cycling performances for nickel-zinc batteries

The in situ construction of oxygen-vacancy-rich NiCo2S4@NiMoO4/Ni2P multilevel nanoarrays for high-performance aqueous Zn-ion batteries

“…8c shows the specific capacitances of NiCo 2 S 4 @NiMoO 4 //Zn battery and NiCo 2 S 4 @NiMoO 4 /Ni 2 P//Zn battery at different current densities. The NiCo 2 S 4 @NiMoO 4 /Ni 2 P//Zn battery delivered an outstanding specific capacity (231 mA h g À1 at 1 A g À1 ), which is substantially larger than the performance of the NiCo 2 S 4 @ NiMoO 4 //Zn battery (125 mA h g À1 at 1 A g À1 ) and a large number of previously reported Zn-ion batteries, for instance, the NiCo-S-2/RGO//Zn battery (197 mA h g À1 at 1 A g À1 ), 45 the Ni 2 P/C-Zn battery (176 mA h g À1 at 1 A g À1 ), 46 and the Co-doped Ni 3 Se 2 //Zn battery (161 mA h g À1 at 1 A g À1 ). 47 Fig.…”

Facile Synthesis of NixCo3−xS4 Microspheres for High-Performance Supercapacitors and Alkaline Aqueous Rechargeable NiCo-Zn Batteries

“…NiCo 2 S 4 @NiMoO 4 /Ni 2 P//Zn (384 Wh kg −1 at 0.46 kW kg −1 ) [ 58 ], Ni/NiO-BCF //Zn (313.4 Wh kg −1 at 0. 66 kW kg −1 ) [ 59 ], NiCo-S-2/RGO//Zn (333.2 Wh kg −1 at 1.7 kW kg −1 ) [ 60 ] ( Table S4 ). The acquired outstanding specific capacity and high energy density, along with the facile preparation method and low-cost, endows the as-prepared Ni 2.5 Co 0.5 S 4 -350 electrode with great potential applications in aqueous electrochemical energy storage devices.…”

Laser-Induced Ni Foil-Supported NiO@Ni(OH)2 Hierarchical Structures as Advanced Cathodes for Ultrahigh Performance Nickel–Zinc Batteries

“…Other obstacles such as insufficient lithium resources, restrictions on transportation, and limited recycling facilities will result in unsustainable cost and environmental pollution. Compared with LIBs using organic electrolytes, aqueous rechargeable batteries (ARBs) have demonstrated tremendous competitiveness in terms of their inflammability, environmental benignity, reliable safety, and low cost. , Among various types of ARBs, Ni–Zn batteries are proposed as the next-generation electrochemical energy storage system owing to their merits of intrinsic safety, natural abundant resources of nickel and zinc, high operation voltage (around 1.75 V), and relatively higher power density when compared to asymmetric supercapacitors (ASCs). − Unfortunately, the current Ni–Zn batteries are far from large-scale industrial applications due to their unsatisfactory capacity and poor cycling performance, mainly arising from the serious irreversibility and active material exfoliation of the Ni-based cathodes as well as the inevitable dendrite formation of Zn-based anodes. , To tackle these obstacles, great efforts have been attempted to engineer micro-/nanostructured Ni-based cathodic materials with unique topography or components for the purpose of enhanced capacity and cycling ability, , such as phosphate ion modulation NiCo 2 O 4 nonosheets, Ni@NiO nanoparticles and nanosheets, ultrathin CoNiO 2 nanosheets, and NiO/Ni­(OH) 2 nanoflakes . Exhilaratingly, the battery capacity and cycling durability were observed to increase to a certain extent via this nanoarchitecture strategy.…”

“…6−14 Unfortunately, the current Ni−Zn batteries are far from large-scale industrial applications due to their unsatisfactory capacity and poor cycling performance, mainly arising from the serious irreversibility and active material exfoliation of the Ni-based cathodes as well as the inevitable dendrite formation of Zn-based anodes. 15,16 To tackle these obstacles, great efforts have been attempted to engineer micro-/ nanostructured Ni-based cathodic materials with unique topography or components for the purpose of enhanced capacity and cycling ability, 17,18 modulation NiCo 2 O 4 nonosheets, 8 Ni@NiO nanoparticles 19 and nanosheets, 20 ultrathin CoNiO 2 nanosheets, 21 and NiO/ Ni(OH) 2 nanoflakes. 22 Exhilaratingly, the battery capacity and cycling durability were observed to increase to a certain extent via this nanoarchitecture strategy.…”