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Near-infrared piezochromic materials (PCMs), presenting a fluorescence response with a clear colour difference (large spectral shift) and strong penetrability, have practical applications as pressure sensors. Nevertheless, examples achieving a distinct...

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Prior to the maturation of next-generation energy storage devices, the actual lithium-ion batteries for commercial purposes are still expected to fulfill some critical requirements, among which the high energy density, wide operating temperature range, and related long-term cycling stability are the most challenging issues. Herein a multiple additives strategy is employed to simultaneously optimize the solid electrolyte interphase on the large-area anode and cathode in a 2 Ah artificial graphite (AGr)/LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM523) pouch cell with high gravimetric (>260 Wh kg −1 ) and volumetric (>630 Wh L −1 ) energy density. By introducing a rational mixture of electrolyte additives, a highly sulfurized surface layer and a uniform and thin passivation layer are separately formed on the anode and cathode of the AGr/NCM523 pouch cell, exhibiting high storage stability at 60 °C, much improved discharge capacity at −10 and −20 °C, high anodic stability at high voltage of 4.4 V, and stable cyclic performance with a capacity retention of 85.5% after 500 cycles, significantly outperforming the value of 75.7% after only 200 cycles of the cell without additional additives. These results demonstrate the critical effect of simultaneous optimizations of anode and cathode interphase layers to construct stable high-energy-density lithium-ion pouch cells.

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A novel fluorescent molecule TPA-CO, which exhibited a hybridized local and charge transfer (HLCT) nature and aggregation-induced emission (AIE) effect, was developed and utilized as a chemosensor for the detection of picric acid (PA) in both organic solution and water. It was found that TPA-CO exhibited apparent fluorescent quenching along with the color change to yellow upon the addition of PA. Notably, more sensitive detection was achieved in the H 2 O: THF (9:1) medium, with the LOD almost two third lower than that in pure THF. Such more sensitive response in aqueous solution was accomplished by the synergy of HLCT and AIE effects in TPA-CO nanoparticles, which facilitated both highly efficient fluorescence in the absence of PA and rapid quenching rate in the presence of PA, respectively. Therefore, it is proposed an effective design strategy by integrating HLCT and AIE effects for developing PA chemosensors.