Weigang Ma

Sep 2, 2024 | nature.com | Yunpeng Zheng |Qinghua Zhang |Zhifang Zhou |YuJun Zhang |Changpeng Lin |Weigang Ma | +7 more

AbstractThermoelectrics converting heat and electricity directly attract broad attentions. To enhance the thermoelectric figure of merit, zT, one of the key points is to decouple the carrier-phonon transport. Here, we propose an entropy engineering strategy to realize the carrier-phonon decoupling in the typical SrTiO3-based perovskite thermoelectrics. By high-entropy design, the lattice thermal conductivity could be reduced nearly to the amorphous limit, 1.25 W m−1 K−1.

Jan 8, 2024 | nature.com | Weigang Ma |Yingjun Liu |Zhen Xu

AbstractMacroscopic fibres assembled from two-dimensional (2D) nanosheets are new and impressing type of fibre materials besides those from one-dimensional (1D) polymers, such as graphene fibres. However, the preparation and property-enhancing technologies of these fibres follow those from 1D polymers by improving the orientation along the fibre axis, leading to non-optimized microstructures and low integrated performances.