TY - JOUR
T1 - Hierarchically Interlaced 2D Copper Iodide/MXene Composite for High Thermoelectric Performance
AU - Karthikeyan, Vaithinathan
AU - Theja, Vaskuri C.S.
AU - De Souza, Maria Merlyne
AU - Roy, Vellaisamy A.L.
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH.
PY - 2022/1
Y1 - 2022/1
N2 - A hierarchical layered architecture in thermoelectric materials works as an ad hoc methodology for strengthening the unique inherent properties. Herein, an excellent thermoelectric behavior in novel 2D copper iodide nanoflakes is demonstrated by compositing with Ti3C2 MXene nanoinclusions. The interlaced architecture of the CuI/Ti3C2 composite lifts the electrical conductivity over two orders by efficient charge transport mechanisms. The thermal conductivity of CuI/Ti3C2 composite is reduced by drastic suppression of mid- and high-frequency phonons by interfacial energy barrier scattering. The structural engineering approach yields a massive power factor of 225 μW m−1 K−2 and a figure of merit value of 0.48 in CuI/5 vol% Ti3C2 composite. A straightforward approach of tuning the figure of merit in Earth-abundant, nontoxic thermoelectric materials to develop future sustainable energy sources is established.
AB - A hierarchical layered architecture in thermoelectric materials works as an ad hoc methodology for strengthening the unique inherent properties. Herein, an excellent thermoelectric behavior in novel 2D copper iodide nanoflakes is demonstrated by compositing with Ti3C2 MXene nanoinclusions. The interlaced architecture of the CuI/Ti3C2 composite lifts the electrical conductivity over two orders by efficient charge transport mechanisms. The thermal conductivity of CuI/Ti3C2 composite is reduced by drastic suppression of mid- and high-frequency phonons by interfacial energy barrier scattering. The structural engineering approach yields a massive power factor of 225 μW m−1 K−2 and a figure of merit value of 0.48 in CuI/5 vol% Ti3C2 composite. A straightforward approach of tuning the figure of merit in Earth-abundant, nontoxic thermoelectric materials to develop future sustainable energy sources is established.
UR - http://www.scopus.com/inward/record.url?scp=85118313837&partnerID=8YFLogxK
U2 - 10.1002/pssr.202100419
DO - 10.1002/pssr.202100419
M3 - Article
AN - SCOPUS:85118313837
SN - 1862-6254
VL - 16
JO - Physica Status Solidi - Rapid Research Letters
JF - Physica Status Solidi - Rapid Research Letters
IS - 1
M1 - 2100419
ER -