Al-doped Co9S8 encapsulated by nitrogen-doped graphene for solid-state asymmetric supercapacitors

Multifunctional Mesoporous Hollow Cobalt Sulfide Nanoreactors for Synergistic Chemodynamic/Photodynamic/Photothermal Therapy with Enhanced Efficacy

“…Moreover, GOx@PCoS nanoparticles were further confirmed by Fourier transform infrared (FTIR) spectroscopy (Figure I). The absorption band at 1655 cm –1 was ascribed to the vibration of the amide group belonging to GOx. , The bands at 1102 and 608 cm –1 were characteristic for the stretching vibration of Co = S and Co–O . The block copolymer POEGMA 20 - b -PDOPA 22 has a characteristic peak of 1728 cm –1 that was ascribed to C=O groups.…”

“…35,52 The bands at 1102 and 608 cm −1 were characteristic for the stretching vibration of Co = S and Co−O. 53 The block copolymer POEGMA 20 -b-PDOPA 22 has a characteristic peak of 1728 cm −1 that was ascribed to C=O groups. The PCoS group showed obvious absorptions at 1728 and 608 cm −1 , which confirmed successful coverage of the Co 9 S 8 nanoparticles by the polymer.…”

Facile synthesis of mesoporous NixCo9−xS8 hollow spheres for high-performance supercapacitors and aqueous Ni/Co–Zn batteries

“…In recent years, as an important transition metal sulfide, Co 9 S 8 has been regarded as one of the most attractive electrode materials with a high theoretical specific capacity (5449 F g −1 at 0.45 V), 1 low cost and non-toxic nature, however, the presence of sluggish ion transport kinetics and low conductivity limits its application in the energy storage field. Thus a lot of efforts have been devoted to improving the conductivity by conductive metals or carbonaceous supports, 2–6 ion-doping, 7 constructing hierarchical composites, 8 graphene hybridization, 9,10 carbon coating, 11 and constructing hetero-phase interfaces. 12–14 In addition to consideration of the conductivity, the electrochemical performance is also dependent on the accessible surface area of transition metal based micro/nanomaterials, 15–17 thus a lot of effect has been devoted to synthesizing electrode materials with large surface areas and porous structures.…”

ZIF-67 Derived Co2VO4 Hollow Nanocubes for High Performance Asymmetric Supercapacitors

“…Figure 4 a shows the CV curves of CoO-HNC, CoVO-HNC, and CoVO-NP at a scan rate of 5 mV s −1 . The presence of significant redox peaks with pseudocapacitance properties for all samples in the potential range 0–0.6 V indicates that the charge storage originated from the redox reaction between cobalt ion and hydroxyl [ 36 ]. Furthermore, the integral area of CoVO-HNC is larger than that of CoO-HNC and CoVO-NP, indicating that CoVO-HNC has a stronger charge storage capacity.…”