Z
Zhifeng Ren
Researcher at Texas Center for Superconductivity
Publications - 726
Citations - 84970
Zhifeng Ren is an academic researcher from Texas Center for Superconductivity. The author has contributed to research in topics: Thermoelectric effect & Thermoelectric materials. The author has an hindex of 122, co-authored 695 publications receiving 71212 citations. Previous affiliations of Zhifeng Ren include Massachusetts Institute of Technology & University of Cincinnati.
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Understanding and manipulating the intrinsic point defect in α-MgAgSb for higher thermoelectric performance
Zihang Liu,Zihang Liu,Huiyuan Geng,Jun Mao,Jing Shuai,Ran He,Chao Wang,Wei Cai,Jiehe Sui,Zhifeng Ren +9 more
TL;DR: In this article, an Ag vacancy is a dominant intrinsic point defect in α-MgAgSb and has a low defect formation energy, shown by first-principles calculations.
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Dramatic thermal conductivity reduction by nanostructures for large increase in thermoelectric figure-of-merit of FeSb2
Huaizhou Zhao,Mani Pokharel,Gaohua Zhu,Shuo Chen,Kevin Lukas,Qing Jie,Cyril Opeil,Gang Chen,Zhifeng Ren +8 more
TL;DR: In this article, thermal conductivity reduction by more than three orders of magnitude over its single crystal counterpart for the strongly correlated system FeSb2 through a nanostructure approach was presented, leading to a significant increase of thermoelectric figure-of-merit (ZT).
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Enhanced formation of 1223 phase by partial replacement of Bi for Tl in in-situ synthesized silver-sheathed superconducting tape of Tl1−xBixSr2−yCa2Cu3O9−δ
Zhifeng Ren,J.H. Wang +1 more
TL;DR: In this article, the in-situ synthesis method has been used in fabricating silver-sheathed superconducting tape of Tl 1− x Bi x Sr 2− y Ba y Ca 2 Cu 3 O 9−δ.
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Effect of aluminum on the thermoelectric properties of nanostructured PbTe
Qinyong Zhang,Siqi Yang,Qian Zhang,Shuo Chen,Weishu Liu,Hui Wang,Zhiting Tian,David Broido,Gang Chen,Zhifeng Ren +9 more
TL;DR: In the present work, the effect of aluminum (Al) on the thermoelectric properties of PbTe is studied and the first principle calculations clearly show an increase of the density of states close to the Fermi level in the conduction band due to Al doping, which averages up the energy and effective mass of electrons, resulting in enhancement of the Seebeck coefficient.
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Enhanced ductile behavior of tensile-elongated individual double-walled and triple-walled carbon nanotubes at high temperatures.
Jian Yu Huang,Jian Yu Huang,S. H. Chen,S. H. Chen,Zhifeng Ren,Ziqiang Wang,Krzysztof Kempa,Michael J. Naughton,Gang Chen,M. S. Dresselhaus +9 more
TL;DR: Conurrent atomic-scale microstructure observations reveal that the superelongation is attributed to a high temperature creep deformation mechanism mediated by atom or vacancy diffusion, dislocation climb, and kink motion at high temperatures.