Achieving lithium‐ion batteries (LIBs) with ultrahigh rate at ambient‐temperature and excellent low temperature‐tolerant performances is still a tremendous challenge. In this paper, we design a binder‐free Li4Ti5O12 (LTO) electrode to achieve an excellent rate performance (∼75 % of its theoretical capacity at 200 C), in which, aligned CNT nanosheets were used to load LTO nanosheets decorated with silver nanocrystals. With combination of 1,3‐Dioxlane‐based electrolyte, there is nearly no initial voltage drop happen, and the capacity can be greater than 140 mAh g−1 (∼85 % of its specific capacity at room temperature) at −60 °C and 0.2 C. This study provides a practical guidance of the design of LIBs with outstanding rate performances and low temperature resistance.
Two Co(II) and Cu(II) complexes, {[Co(Htpim) 2 (H 2 O) 2 ](IPAÀ OH)} n (1) and {[Cu(Htpim) 2 (H 2 O) 2 ](IPAÀ OH)} n (2) (Htpim = 2,4,5-tri(4pyridyl)-imidazole, and H 2 IPAÀ OH = 5-hydroxyisophthalic acid), have been solvothermally synthesized by mixed-ligand strategy and structurally characterized by elemental analyses, IR spectra and X-ray diffraction (XRD) analyses. Single crystal XRD analyses indicate that 1 and 2 are almost isostructural and show 1D chain structures. Moreover, 1 can sensitively detect Mg 2 + ions through turn-on luminescence. Meanwhile, 2 can highly sensitively detect Ca 2 + and SCN À ions as a luminescence sensor.
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