TY - JOUR
T1 - Influence of microstructure and thermoelectric properties on the power density of multi-walled carbon nanotube/ metal oxide hybrid flexible thermoelectric generators
AU - Nayak, Ramakrishna
AU - Shetty, Prakasha
AU - Selvakumar, M.
AU - Shivamurthy, B.
AU - Rao, Ashok
AU - Sriram, K. V.
AU - Murari, M. S.
AU - Kompa, Akshayakumar
AU - Deepika Shanubhogue, U.
N1 - Funding Information:
The authors sincerely thank the Manipal Institute of Technology, MAHE, Manipal, for their laboratory facility and support in this research work. The authors (Ashok Rao) acknowledge DST-FIST, Government of India (Grant number FST/PS-I/2017/8). Authors are thankful for the characterization facility rendered by Central Research Facility, NITK, Surathkal, Mangalore −575 025, Karnataka.
Publisher Copyright:
© 2023
PY - 2023/12/1
Y1 - 2023/12/1
N2 - The quest for a low-cost, flexible thermoelectric generator using eco-friendly metal oxide-based materials for low-temperature applications has motivated this work. The work compares the performance of amine-functionalized multi-walled carbon nanotubes (MWCNT-NH2) and metal oxide nanoparticles (CuO, NiO, and Fe2O3) ink-based hybrid flexible thermoelectric generators. Study reveals that the thermoelectric performance of a flexible thermoelectric generator improves by fine-tuning the materials crystallite size, bandgap, carrier concentration, carrier mobility, resistivity, the Seebeck coefficient, and micro-porosity of the ink film, which could be materialized by using hybrid thermoelectric materials. Among the three fabricated devices, MWCNT-NH2/NiO hybrid flexible thermoelectric generator exhibits a maximum power output of 1.44 nW at ΔT= 100 °C. The maximum power density displayed by MWCNT-NH2/NiO hybrid device is 59.3 nW/cm2 at ΔT= 100 °C, which is 23.28% and 332.8% higher than that of MWCNT-NH2/CuO and MWCNT-NH2/Fe2O3-based devices, respectively. The performance of MWCNT-NH2/NiO is comparatively superior to some previously reported works.
AB - The quest for a low-cost, flexible thermoelectric generator using eco-friendly metal oxide-based materials for low-temperature applications has motivated this work. The work compares the performance of amine-functionalized multi-walled carbon nanotubes (MWCNT-NH2) and metal oxide nanoparticles (CuO, NiO, and Fe2O3) ink-based hybrid flexible thermoelectric generators. Study reveals that the thermoelectric performance of a flexible thermoelectric generator improves by fine-tuning the materials crystallite size, bandgap, carrier concentration, carrier mobility, resistivity, the Seebeck coefficient, and micro-porosity of the ink film, which could be materialized by using hybrid thermoelectric materials. Among the three fabricated devices, MWCNT-NH2/NiO hybrid flexible thermoelectric generator exhibits a maximum power output of 1.44 nW at ΔT= 100 °C. The maximum power density displayed by MWCNT-NH2/NiO hybrid device is 59.3 nW/cm2 at ΔT= 100 °C, which is 23.28% and 332.8% higher than that of MWCNT-NH2/CuO and MWCNT-NH2/Fe2O3-based devices, respectively. The performance of MWCNT-NH2/NiO is comparatively superior to some previously reported works.
UR - https://www.scopus.com/pages/publications/85172809791
UR - https://www.scopus.com/inward/citedby.url?scp=85172809791&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2023.09.275
DO - 10.1016/j.ceramint.2023.09.275
M3 - Article
AN - SCOPUS:85172809791
SN - 0272-8842
VL - 49
SP - 39307
EP - 39328
JO - Ceramics International
JF - Ceramics International
IS - 23
ER -