N-type silver ammonia-polyethyleneimine/single-walled carbon nanotube composite films with enhanced thermoelectric properties

Abstract

Carbon nanotubes and their composite thermoelectric (TE) materials have significant advantages in supplying power to flexible electronics due to their high electrical conductivity, excellent flexibility, and facile preparation technology.

Enhanced Thermoelectric Properties of Exfoliated BN Nanosheets/Single-Walled Carbon Nanotube Composite Films for Applications in Flexible Electronics

“…Wearable devices maintain rapid development, which play an important role in industry, health care, entertainment, and other fields. Nowadays, it is urgent to develop a mini and reliable micro-, nanowatt power supply to power the wearable device. − Thermoelectric devices made of p-type and n-type thermoelectric materials can realize conversion between thermal energy and electrical energy, which are one of the good candidates for powering wearable devices due to the advantages such as no moving part, easy maintenance, and eco-friendliness. − Generally, thermoelectric materials are evaluated by the dimensionless figure of merit ZT ( ZT = σ S 2 T /κ, where σ, S , T , and κ are electrical conductivity, Seebeck coefficient, absolute temperature, and thermal conductivity, respectively). For convenience, the power factor ( PF = S 2 σ), without considering thermal conductivity, has been used to evaluate thermoelectric performance. − Therefore, large PF and low κ materials are desirable for fabricating thermoelectric devices with good performance. − …”