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MXenes are an ew family of 2D transition metal carbides and nitrides,w hich have attracted enormous attention in electrochemicale nergys torage,s ensingt echnology, and catalysis owing to their good conductivity, high specific surface area, and excellent electrochemical properties.I nt his work, as eries of Co 3 O 4 -doped 3D MXene/RGO hybrid porousa erogels is designed and prepared through af acile in situ reduction and thermala nnealing process, in which the reduced graphene oxide (RGO) conductiven etwork can electrically link the separated Co 3 O 4 -MXene composite nanosheets,l eading to enhanced electronic conductivity. It is found that upon using the Co 3 O 4 -MXene/RGO hybrid porous aerogelp repared with am ass ratio of Co 3 O 4 -MXene/RGOo f 3:1( CMR31) as an electrode for as upercapacitor,asuperior specific capacitance of 345 Fg À1 at the current density of 1Ag À1 is achieved, which is significantly higher than those of Ti 3 C 2 T x MXene, RGO, and MXene/RGO electrodes. In addition, ah igh capacitance retention (85 %o ft he initialc apacitance after 10 000 cycles at ah igh current density of 3Ag À1 ) and al ow internal resistance R s (0.44 W)c an be achieved. An all-solid-state asymmetric supercapacitor( ASC) device is assembled using CMR31, and it has the ability to light up a blue LED indicator for 5min if four ASCs are connected in series. Therefore, these novel Co 3 O 4 -MXene/RGOh ybrid porous aerogels have potential practical applicationsi n high-energys torage devices.

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A wearable coaxial fiber-shaped asymmetric supercapacitor based on well-aligned Mn, Ni co-substituted Co carbonate hydroxide nanoneedle arrays on carbon fibers is successfully fabricated, and it exhibits excellent electrochemical performances.

Novel nanomaterials and advanced nanotechnologies continue to promote the fast development of new approaches for efficient tumor therapy. As an alternative choice to various traditional therapies, non-invasive photothermal therapy (PTT) has attracted significant attention mainly due to its low cost, highly localizing, specific tumor treatment and minimal side effects on healthy tissues. PTT induced by photo-absorbing agents which can absorb and convert the external NIR laser into heat to ablate tumors. Plenty of studies have shown the significant potential of PTT to treat tumors in future practical applications. However, PTT alone usually could not eradicate tumors considering the intensity of laser gradual attenuates in biological tissues and the heat generated tends to distribute inhomogeneous within tumors tissues. Combination of chemotherapy with photothermal therapy into one system for tumor therapy is an effective strategy to further improve the therapy efficiency. In this Minireview, we focus on the recent advances in constructing PTT therapeutic and multi-model combination therapeutic via integrating nanomaterials and functional polymers.

MXene is a neoteric type of bidimensional (2D) transition metal carbide/nitride with broad application prospects, in particular with electrochemical energy storage. The electrochemical performance of MXene is unsatisfactory because it is easy to stack resulting in the difficulty of electrolyte penetration and ion transport. In this study, the cobaltous sulfide-modified 3D MXene/N-doped carbon foam (CoS@MXene/CF) hybrid aerogel is projected and manufactured via simple in situ growth and thermal annealing strategies. The capacitance of the as-fabricated 300-CMC-31:1 electrode material reaches 250 F g–1 (1 A g–1), which is obviously higher than those of MXene, CoS@CF, 400-CMC-31:1, 300-CMC-10:1, 300-CMC-50:1, CF, and MXene/CF electrode materials. Moreover, it can hold 97.5% of the original capacitance after 10,000 cycles and the internal resistance (R s) is only 0.50 Ω. A green bulb can be lit by two all-solid asymmetric supercapacitors installed in series. The prepared CoS@MXene/CF hybrid aerogel exhibits promising potential for practical application in energy storage areas.

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