An investigation of V2O5/polypyrrole composite cathode materials for lithium-ion batteries synthesized by sol–gel

Review on Synthesis, Characterizations, and Electrochemical Properties of Cathode Materials for Lithium Ion Batteries

“…The vanadium-based oxides have attracted strong interest from researchers due to their good electronic conductivity, excellent chemical stability in polymeric electrolytes, and high energy density [104] [147], Fe 2 V 4 O 13 [148], V 6 O 13 [149,150], and Li 6 V 10 O 28 [151]. Chernova et al [152] reviewed in detail the structural and electrochemical features of different vanadium oxides as well as the process of lithium insertion in them [153][154][155][156] [104].…”

“…Chernova et al [152] reviewed in detail the structural and electrochemical features of different vanadium oxides as well as the process of lithium insertion in them [153][154][155][156] [104]. When the structure and composition of lithiated V 2 O 5 nanocomposites are optimized, their electrochemical behavior can be significantly enhanced.…”

“…Despite these advantages of V 2 O 5 compounds, two drawbacks still persist: low power density due to their intrinsic low ionic conductivity, and poor cyclability as a result of microstructural failure upon cyclic lithium ion intercalation-deintercalation [104]. Since thermal stability in polymeric electrolytes is one of the main advantages for vanadium oxide, a variety of conductive polymeric materials have been suggested to be used as hybrid hosts of V 2 O 5 such as polypyrrole [104,112,114], poly(ethylene glycol) [116], polythiophene [109], polyphosphazene [159], and polyaniline [115].…”

“…Since thermal stability in polymeric electrolytes is one of the main advantages for vanadium oxide, a variety of conductive polymeric materials have been suggested to be used as hybrid hosts of V 2 O 5 such as polypyrrole [104,112,114], poly(ethylene glycol) [116], polythiophene [109], polyphosphazene [159], and polyaniline [115]. Such polymeric hybrid materials have been found to increase the electronic conductivity of the original oxides and improve the cycling behavior by enhancing the microstructural stability.…”

Highly selective and sensitive response of Polypyrrole–MnO2 based composites towards ammonia gas

“…The composites of MnO 2 with other metal oxides have worked well for gas detection but at higher temperature . The composites of PPy/MnO 2 have been reported to be of better electrochemical performance than the individual components .…”