Hao Liu's research while affiliated with Tsinghua University and other places

... Kai Liu's team designed asymmetric trihaloaromatic lithium salts for solid polymer electrolytes to promote the formation of SEI film enriched with LiF and LiBr, thereby improving interface stability (Figure 6 b). [120] The incorporation of LiF and LiBr in the SEI film was found to significantly enhance Young's modulus and surface energy, thereby promoting the homogenization of Li + flux. Moreover, the presence of LiBr effectively reduces the diffusion barrier for Li + within the SEI film. ...

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Solid Electrolyte Interphase on Lithium Metal Anodes

... Upon cycling, the O spectrum collected at the Li/LPS-0.05SnO 2 interface additionally shows a Li 2 O peak at 526.6 eV. The presence of Li 2 O in the interphase would modulate interfacial lithium deposition behaviors and maintain the stability of the SSE/Li interphase, thus inhibiting lithium dendrite formation within the SSE [46,47] . The initial S spectrum of LPS-0.05SnO 2 is ascribed to non-bridging sulfur Li-S-P and bridging sulfur P-S-P. ...

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Binary anion and cation co-doping enhance sulfide solid electrolyte performance for all-solid-state lithium batteries

... where V cell and C full are the average working voltage and the reversible capacity of the full cell, respectively, m total is the total weight based on the sum of current collector, cathode, anode, separator and electrolyte. The weight of the packing cell bag is excluded from the specific energy calculation due to our limited size of cell 42,43 . To assess the overcharge-safety, the pouch cells were charged from the open circuit voltage to 9 V at a scan rate of 20 mV s -1 , and the infrared thermography images of the pouch cells were captured using a FLIR ONE PRO. ...

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Difluoroester solvent toward fast-rate anion-intercalation lithium metal batteries under extreme conditions

... Compared with traditional nanomaterials such as metal nanomaterials, lipid nanoparticles, polymer nanoparticles, and carbon nanomaterials, biomass materials have good reproducibility and biocompatibility, and their development value far exceeds that of other materials (Lugoloobi et al. 2021;Liu et al. 2023a). As representatives of biomass materials, cellulose nanocrystals (CNCs) and polydopamine (PDA) have received extensive attention in the biomedical field for their strong hydrophilicity, good biocompatibility, and ability to be prepared in large quantities (Long et al. 2021;Cui et al. 2023;Liu et al. 2022). It is reported that the morphology, proper aspect ratio, and rigid backbone of the materials affect the cellular uptake, while the rod-like structure of CNCs can enhance cellular internalization and improve transfection efficiency Gratton et al. 2008;Lin et al. 2015). ...

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A multifunctional cellulose nanocomposite with targeted fluorescence imaging and photothermal effects on breast cancer cells

... However, their activities still fell short compared to those of carbon catalysts and commercial Pt/C catalysts, and the current record for a half-wave potential is 0.75 V vs. RHE. This limited activity was attributed to the poor electron conductivity of the frameworks and the weak binding of O 2 and other oxygen-containing intermediates 51 . Thus, developing electronic conductive frameworks with strong polar sites holds promise for constructing highly active metal-free ORR catalysts [52][53][54][55][56][57] . ...

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Charging modulation of the pyridine nitrogen of covalent organic frameworks for promoting oxygen reduction reaction

... The NiS NPs' wrapping around porous carbon may be the cause of this. As a result, the carbon diffraction peaks are obscured by the strong characteristic peaks of NiS, suggesting a strong chemical bond between NiS NPs and AC (Zhu et al. 2021;Liu et al. 2023). In addition, the lack of any extra peaks resulting from impurities demonstrates the high purity of the NiS NPs-AC nanocomposite. ...

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Sustainable synthesis of magnetic Sargassum siliquastrum activated carbon loaded with NiS nanorods for adsorption of 2,4-D herbicide

... The TRPS material provides high electronic conductivity, high thermal sensitivity (rapid response in less than 1 s at 70°C), and excellent electrochemical stability for LIBs. Jia et al. 186 developed a smart thermally responsive current collector by combining the shape memory polymer (EPON cross-linking network), which could be pulled up to restore the original shape and pierce the cover Cu layer with a circuit disconnection when the temperature exceeded its shape memory triggering temperature (Fig. 12d, 90°C, i.e., self-shutdown). ...

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Recent progress in nonflammable electrolytes and cell design for safe Li-ion batteries

... As a result, the distance between friction layers can be left uncontrolled, resulting in better energy conversion. The most widely used polymer matrices for MXene-reinforced nanofibers are PLA [93][94][95], PVA [88,90], PVDF [89,96] and CA [97]. Zhang et al. reported the preparation of endogenous TENG by electrospinning PLA fiber films with the addition of MXene as filler. ...

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Advances in MXene-Based Triboelectric Nanogenerators

... Among them, the compounds such as vanadium nitride (VN) [11], titanium dioxide (TiO 2 ) [12], cobalt phosphide (CoP) [13], etc., provided with promoted chemical affinity of LiPS and efficient utilization of the active material. Furthermore, increased interaction of LiPS with carbon and metal compounds led to improved conductivity, buffering volumetric changes of sulfur and enhanced kinetics of RedOx reactions in Li-S cells afterwards [15,16]. ...

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Nickel and Nickel Oxide Nanoparticles Embedded Functional Carbon Nanofibers for Lithium Sulfur Batteries

... In contrast to conventional flat displays, foldable and flexible displays offer a range of form factors for implementing flexible electronics [1][2][3] . As the outermost layer of these displays, developing a foldable and flexible cover window is crucial to replace the conventional rigid cover glass 1,[3][4][5] . ...

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Transparent radiative cooling cover window for flexible and foldable electronic displays