通过简便、高效、可规模化的一步高温氮化法，利用高温烧结使二氧化钛(TiO₂)粉末在转化成氮化钛(TiN)的同时形成连续的三维多孔网络，具有良好的导电性和高孔隙率。作为高效限硫载体，连续的三维多孔TiN网络不仅能有效增加电子传输路径、增强电子转移、促进离子迁移，而且能够从物理限域和化学吸附两方面对多硫化锂的穿梭效应进行强有力的限制，同时有效提高了硫的负载量。制备的高导电性、高硫负载硫正极展现出较高的放电容量和优异的循环稳定性能。

A novel one-dimensional (1D) polycarbonyl coordination polymer [Cu(BGPD)(DMA)(H₂O)]·DMA (named Cu-BD, H₂BGPD=N, N′-bis(glycinyl)pyromellitic diimide; DMA=dimethylacetamide) was synthesized, and evaluated as a cathode material for lithium - ion batteries (LIBs) for the first time. The electrochemical performance study revealed that the Cu-BD cathode exhibited better cycling stability and a specific capacity of 50 mAh·g^-1 after 100 cycles at a current density of 50 mA·g^-1. The study of the reaction mechanism for the Cu-BD electrode discloses that both BGPD^2- ligands and Cu(Ⅱ) ions may take part in the electron-transfer process during charging and discharging.

A novel Cu-based composite with unique three-dimensional (3D) nanoflower-like morphology and mesoporous structure (abbreviated as Cu-NF) was developed, using zeolitic imidazolate framework-67 (ZIF-67) as precursor via facile Cu ion etching, followed by low-temperature calcination strategy. The mass ratio of Cu²⁺ to ZIF-67 played a key role in morphology control. Additionally, low-temperature calcination changed the chemical components of the active sites and improved the porosity for mass transportation with the original morphology preserved. Sample Cu-NF-300, calcined at 300 ℃ displayed the best oxygen evolution reaction (OER) performance among all the samples, with a small overpotential of 347 mV in 1.0 mol·L^-1 KOH and a low Tafel slope of 93 mV·dec^-1 for OER. Significant improvement in the electrochemical activity is attributed to the 3D superstructure and low-temperature calcination activation, which offer a simple synthetic strategy for the fabrication of Cu-based electrocatalysts for OER.

Herein, the positively charged two-dimensional (2D) porous silica (PSN⁺) nanosheet was obtained by modifying the 2D silica obtained from acid-etched 2D vermiculite, and then the PSN⁺ was used as the filler of polyethylene oxide (PEO)-based solid polymer electrolytes (SPEs). Given the abundant positive charges, PSN⁺ effectively binds with the anions dissociated from lithium salts, thereby promoting lithium-ion transport and achieving a decent lithium-ion transference number. At 50 ℃, the PSN⁺-based SPEs demonstrated a higher ionic conductivity of 7.5×10^-5 S·cm^-1, lithium-ion transference number of 0.30, and a stable voltage window of 4.41 V. Consequently, the as-assembled LiFePO₄||Li batteries delivered excellent initial discharge specific capacity of 155.7 mAh·g^-1 at 0.2C with 97.1% capacity retention after 100 cycles at 50 ℃.

制备了具有高荧光量子产率(photoluminescence quantum yield，PLQY)的Mn²⁺掺杂准二维钙钛矿(PEA)₂Pb_yMn_1-yBr₄(PEA为苯乙胺，y为Pb²⁺占Mn²⁺和Pb²⁺总含量的物质的量分数)薄膜。宽带隙的(PEA)₂PbBr₄作为给体，掺杂杂质Mn²⁺作为受体，构筑了双发射的激发态传递系统。通过调控Mn²⁺掺杂的不同比例对(PEA)₂Pb_yMn_1-yBr₄的发光性能和薄膜形貌的影响，发现当前驱体溶液中Mn²⁺与Pb²⁺的物质的量之比为1∶4时，薄膜有着最高的PLQY和最低的表面粗糙度。利用飞秒瞬态吸收(transient absorption，TA)光谱，追踪其动力学过程，发现主客体之间的激发态传递是通过电荷转移来实现的。为了研究材料的电致发光特性，我们将(PEA)₂Pb_yMn_1-yBr₄作为活性层，加工得到了发光二极管(light emitting diodes，LEDs)。在室温下，器件发出明亮的橙色，其最高的发光强度为0.21 cd·m^-2，外量子效率(external quantum efficiency，EQE)为0.002 5%。

A Cd(Ⅱ) complex, formulated as {(H₂dbim)_0.5[Cd(Hbptc)]·H₂O}_n (1), where dbim=1-(4-((2, 6-dimethyl-2H-benzo[d]imidazol-3(3H)-yl)methyl)benzyl)-2, 7-dihydro-2, 5-dimethyl-1H-benzo[d]imidazole, H₄bptc=3, 3', 4, 4'-benzophenone tetracarboxylic acid, has been obtained by hydrothermal reactions and structurally characterized. Complex 1 exhibits a 2D layer with a point symbol of {4⁴·6⁶}. Complex 1 was used for fluorescence identification of some common environmental pollutants. The result of the research shows that complex 1 can effectively detect p-nitrophenol, tetracycline, and 2, 6-dichloro-4-nitroaniline. The calculated quenching constants for p-nitrophenol, tetracycline, and 2, 6-dichloro-4-nitroaniline were 2×10², 5.4×10⁴, and 2×10⁴ L·mol^-1, respectively.