TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Abdirahman Mohamed, Mana
A1  - Arnold, Stefanie
A1  - Janka, Oliver
A1  - Quade, Antje
A1  - Presser, Volker
A1  - Kickelbick, Guido
T1  - Self-Activation of Inorganic-Organic Hybrids Derived through Continuous Synthesis of Polyoxomolybdate and para-Phenylenediamine Enables Very High Lithium-Ion Storage Capacity
JF  - ChemSusChem
N2  - Inorganic-organic hybrid materials with redox-active components were prepared by an aqueous precipitation reaction of ammonium heptamolybdate (AHM) with para-phenylenediamine (PPD). A scalable and low-energy continuous wet chemical synthesis process, known as the microjet process, was used to prepare particles with large surface area in the submicrometer range with high purity and reproducibility on a large scale. Two different crystalline hybrid products were formed depending on the ratio of molybdate to organic ligand and pH. A ratio of para-phenylenediamine to ammonium heptamolybdate from 1 : 1 to 5 : 1 resulted in the compound [C6H10N2]2[Mo8O26] ⋅ 6 H2O, while higher PPD ratios from 9 : 1 to 30 : 1 yielded a composition of [C6H9N2]4[NH4]2[Mo7O24] ⋅ 3 H2O. The electrochemical behavior of the two products was tested in a battery cell environment. Only the second of the two hybrid materials showed an exceptionally high capacity of 1084 mAh g−1 at 100 mA g−1 after 150 cycles. The maximum capacity was reached after an induction phase, which can be explained by a combination of a conversion reaction with lithium to Li2MoO4 and an additional in situ polymerization of PPD. The final hybrid material is a promising material for lithium-ion battery (LIB) applications.
KW  - continuous synthesis
KW  - electrodes
KW  - inorganic-organic hybrid materials
KW  - lithium-ion batteries
KW  - polyoxometalates
Y1  - 2023
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:291:415-5739
SN  - 1864-564X
SS  - 1864-564X
U6  - https://doi.org/10.1002/cssc.202202213
DO  - https://doi.org/10.1002/cssc.202202213
VL  - 16
SP  - e202202213
ER  -