Structure-Property of Metal Organic Frameworks Calcium Terephthalates Anodes for Lithium-ion Batteries

In Situ Atomic/Molecular Layer-by-Layer Deposition of Inorganic–Organic Coordination Network Thin Films from Gaseous Precursors

“…20,22 Here we introduce a straightforward and readily reproducible ALD/MLD process for the manufacturing of calcium terephthalate (Ca-TP) coordination network thin films from Ca(thd)2 and benzene-1,4-dicarboxylic acid or so-called terephthalic acid (TPA) precursors over a notably wide deposition temperature range; schematics of our ALD/MLD process are shown in Figure 1. Calcium-terephthalate networks have been synthesized in bulk form and demonstrated to be interesting candidates for example for Li-ion battery anode materials; 23 also known is that the Ca-TP materials synthetized in bulk form tend to have DMF and/or H2O molecules in their structures, and thus require high-temperature annealing to obtain the solvent-free product. [23][24][25][26][27] Figure 1.…”

“…Calcium-terephthalate networks have been synthesized in bulk form and demonstrated to be interesting candidates for example for Li-ion battery anode materials; 23 also known is that the Ca-TP materials synthetized in bulk form tend to have DMF and/or H2O molecules in their structures, and thus require high-temperature annealing to obtain the solvent-free product. [23][24][25][26][27] Figure 1. Schematics of the ALD/MLD process for inorganicorganic coordination network thin films, where the process consists of inert-gas-separated pulses of (1) metal (here Ca(thd)2), and (2) organic (here TPA) precursors to yield (3) a monolayer of the hybrid material (here Ca-TP).…”

Silver-mediated calcium terephthalate with enhanced electronic conductivity as an organic anode for efficient Li-ion batteries

“…26,27,29,31 All the constituents were uniformly mixed in N-methyl-2-pyrrolidone (NMP) solvent and pasted onto a thin copper foil. Similar to our previous study, the working electrode is prepared by 60 wt% active material, 30 wt% acetylene black and 10 wt% polyvinylidene uoride (PVDF).…”

“…Despite that Li 4 Ti 5 O 12 as the anode material displays good Li-ion intercalation/de-intercalation reversibility and stable structure during long charge-discharge cycling, the pristine Li 4 Ti 5 O 12 exhibits poor lithium storage property at high current density, due to its quite low electronic conductivity (ca. 26 The electrochemical process of the terephthalate anion is shown in Scheme 1. 12 To overcome the issue, one of the useful strategies is to add conductive metals to produce Li 4 Ti 5 O 12 -metal composites.…”

Improvement in the Electrochemical Properties of Intercalated Metal–Organic Framework Electrode Materials by Controlling Crystal Growth

“…2 Furthermore, the proposed material exhibits improved regularity of O-stacked packing via self-organization induced by heat treatment under inert atmosphere; this improved packing led to an improvement of reversible capacity as well as to a reduction of internal resistance. 4 Although similar electrode materials have been extensively reported by other groups, [5][6][7] little consideration has been given to the detailed understanding of the relationship between electrochemistry and crystal structure to the MOF based electrode materials. In this work, we further investigate the Li intercalation characteristics in each crystal plane of the 2,6-Naph(COOLi) 2 and discuss the improvement of its electrochemical properties via control of its crystal growth.…”