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Green synthesis of nickel‐manganese/polyaniline‐based ternary composites for high‐performance supercapattery devices
Author(s) -
Alam Shahid,
Iqbal Muhammad Zahir,
Khan Junaid
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6593
Subject(s) - ternary operation , materials science , polyaniline , composite number , nickel , supercapacitor , composite material , manganese , electrode , electrochemistry , chemical engineering , metallurgy , polymer , chemistry , computer science , polymerization , programming language , engineering
Summary The study divulges formation of nickel‐manganese phosphate and polyaniline (NiMn(PO 4 ) 2 ‐PANI)‐based ternary composites at different aspect ratios, synthesized via facile sonochemical method. The composite is utilized for high‐performance energy storage applications. The composite with 30 wt% PANI depicts the best electrochemical performance with maximum specific capacity ( Q s ) of 847 C g −1 at 0.5 A g −1 in three‐electrode assembly. The supercapattery device is assembled by utilizing NiMn(PO 4 ) 2 ‐PANI and activated carbon. The supercapattery demonstrates outstanding performance by delivering a remarkable specific energy of 71.3 Wh kg −1 , and the maximum specific power is 12 686 W kg −1 and capacity retention of 97.6% after 5000 GCD series. Furthermore, the diffusive and capacitive mechanism is evaluated by applying Dunn's model. The b values are calculated to confirm the hybrid nature of the device. The study depicts the potentials of reported ternary composites as self‐supported electrode materials in the development of cost‐effective and efficient energy storage system.