Ni-doped tin disulfide@Nickel hydroxide as robust cathode toward durable supercapacitor and aqueous Ni-Zn battery

Resourceful utilization of methylene blue-contaminated water for the fabrication of an ultra-stable supercapacitor device

“…6(f) represents the Ragone plot of the device with comparison to other reported devices, like nickel-doped SnS 2 @Ni(OH) 2 on carbon cloth//AC (Ni–SnS 2 @Ni(OH) 2 –CC//AC), graphene-wrapped SnS 2 (SnS 2 –G//SnS 2 –G), SnS 2 –SnO 2 //SnS 2 –SnO 2 , SnS 2 //reduced graphene oxide (SnS 2 //RGO), MoS 2 –SnS 2 //MoS 2 –SnS 2 , and polyaniline/SnS 2 @CNTs/carbon fibers//polyaniline/SnS 2 @CNTs/carbon fibers (PANI/SnS 2 @CNTs/CFs//PANI/SnS 2 @CNTs/CFs). 49,52–56 The device had a superb ED of 44.3 W h kg −1 at a high PD of 1800 W kg −1 at 1 A g −1 with the energy density being the highest among all above reported devices. This fabricated device also managed to have a high ED of 20.2 W h kg −1 , while delivering PD of 5400 W kg −1 at 3 A g −1 .…”

Interface Polarization Effects Enhancing Mn2O3@TiO2@MXene Heterostructures for Aqueous Magnesium Ion Capacitors: Guided Charge Distribution and Transportation via Built‐in Electric Fields

“…Moreover, the ideal energy density of mesoporous Mn 2 O 3 @TiO 2 @MXene//AC surpasses many previously reported capacitors (relevant data displayed in Table S3, Supporting Information), demonstrating a substantial competitive advantage for our AMIC. [56][57][58][59][60][61] For practical application, two-coin cell devices successfully power a watch commonly used in daily life (Figure 7g). Moreover, four-coin cell devices effectively charge an intelligent mobile phone (Figure 7h), showcasing the wide application prospects of mesoporous Mn 2 O 3 @TiO 2 @MXene//AC and its potential to provide a new design concept for green energy storage.…”

Ni foam-supported Zn–Co–Ni ternary oxide nanosheet arrays derived from an MOF precursor with enhanced performances for supercapcitors and Ni–Zn batteries

“…Furthermore, the feature of electrode materials is effectively influencing the performance of the corresponding device. 9–11 Thus, the exploitation of electrode materials with high capacity, stable structure, and high conductivity is appreciated for the breakthrough and bottleneck of sluggish kinetic processes in supercapacitors and alkaline Ni–Zn batteries. Alkaline Ni–Zn batteries display high energy density with high operating voltage and may be combined with capacitance-level power density.…”