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Search Publications by: Hui Wu (Fed)

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Displaying 101 - 125 of 152

The Low-Temperature Structural Behavior of Sodium 1-Carba-closo-decaborate: NaCB 9 H 10

August 21, 2016
Author(s)
Hui Wu, Wan Si NMN Tang, Wei Zhou, Jacob Daniel Tarver, Vitalie Stavila, Craig Brown, Terrence J. Udovic
Two ordered phases of the novel solid superionic conductor sodium 1-carba-closo-decaborate (NaCB 9H 10) were identified via synchrotron x-ray powder diffraction in combination with first-principles calculations and neutron vibrational spectroscopy. A

Stabilizing Lithium and Sodium Fast-Ion Conduction in Solid Polyhedral-Borate Salts at Device-Relevant Temperatures

July 1, 2016
Author(s)
Wan Si NMN Tang, Motoaki Matsuo, Hui Wu, Vitalie Stavila, Atsushi Unemoto, Shin-Ichi Orimo, Terrence J. Udovic
Mechanically milling a variety of lithium and sodium closo-borate compounds enables the room-temperature stabilization of their fast-ion-conducting, high-T-like disordered phases. This represents a viable strategy for better exploiting the impressive

Pore Chemistry and Size Control in Hybrid Porous Materials for Acetylene Capture from Ethylene

May 20, 2016
Author(s)
Xili Cui, Kaijie Chen, Huabin Xing, Qiwei Yang, Rajamani Krishna, Zongbi Bao, Hui Wu, Wei Zhou, Xinglong Dong, Yu Han, Bin Li, Qilong Ren, Michael J. Zaworotko, Banglin Chen
The trade-off between physical adsorption capacity and selectivity of porous materials is a major barrier for efficient gas separation and purification through physisorption. We report control over pore chemistry and size in copper coordination networks

UTSA-74: A MOF-74 Isomer with Two Accessible Binding Sites per Metal Center for Highly Selective Gas Separation

May 4, 2016
Author(s)
Feng Luo, Changsheng Yan, Lilong Dang, Rajamani Krishna, Wei Zhou, Hui Wu, Xinglong Dong, Yu Han, Tong-Liang Hu, Michael O'Keeffe, Lingling Wang, Mingbiao Luo, Rui-Biao Lin, Banglin Chen
A new metal-organic framework Zn 2(H 2O)(dobdc)¿0.5(H 2O) (UTSA-74, H 4dobdc=2,5-dioxido-1,4- benzenedicarboxylic acid), Zn-MOF-74/CPO-27-Zn isomer, has been synthesized and structurally characterized. It has a novel four coordinated fgl topology with one

Fast Lithium-Ionic Conduction in a New Complex Hydride-Sulphide Crystalline Phase

January 11, 2016
Author(s)
Atsushi Unemoto, Hui Wu, Terrence J. Udovic, Motoaki Matsuo, Tamio Ikeshoji, Shin-Ichi Orimo
A new crystalline phase derived from a 90LiBH 4:10P 2S 5 mixture displays high lithium-ionic conductivity of log(ς/S cm -1) = 3.0 at 300 K. It is stable up to 473 K and has both a wide potential window of 0-5 V and favorable mechanical properties for

Unparalleled Lithium and Sodium Superionic Conduction in Solid Electrolytes with Large Monovalent Cage-like Anions

October 8, 2015
Author(s)
Wan Si NMN Tang, Atsushi Unemoto, Wei Zhou, Vitalie Stavila, Motoaki Matsuo, Hui Wu, Shin-Ichi Orimo, Terrence J. Udovic
Solid electrolytes with sufficiently high conductivities and stabilities are the elusive answer to the inherent shortcomings of organic liquid electrolytes prevalent in today's rechargeable batteries. We recently revealed a novel fast-ion-conducting sodium

A Flexible Microporous Hydrogen-Bonded Organic Framework for Gas Sorption and Separation

August 12, 2015
Author(s)
Hailong Wang, Bin Li, Hui Wu, Tong-Liang Hu, Zizhu Yao, Wei Zhou, Shengchang Xiang, Banglin Chen
A microporous three-dimensional hydrogen-bonded organic framework (HOF-5) has been constructed from a new organic linker 4,4'r", r"'(2,4-diamino-1,3,5-triazin-6-yl)tetraphenylethene. Activated HOF-4a exhibits a stepwise N 2 adsorption isotherm at 77 K

Microporous Metal-Organic Framework with Dual Functionalities for Highly Efficient Removal of Acetylene from Ethylene/Acetylene Mixtures

July 4, 2015
Author(s)
Tong-Liang Hu, Hailong Wang, Bin Li, Rajamani Krishna, Hui Wu, Wei Zhou, Yunfeng Zhao, Yu Han, Xue Wang, Weidong Zhu, Zizhu Yao, Shengchang Xiang, Banglin Chen
The removal of acetylene from ethylene/acetylene mixtures containing 1% acetylene is a technologically very important but highly challenging task. Current removal approaches include the partial hydrogenation of acetylene (C 2H 2) into ethylene (C 2H 4)

Copper-Substituted Iron Telluride: A Phase Diagram

June 22, 2015
Author(s)
Patrick N. Valdivia, Min Gyu Kim, Thomas R. Forrest, Zhijun Xu, Meng Wang, Hui Wu, Leland Harriger, Edith D. Bourret-Courchesne, Robert J. Birgeneau
Metal site alloying of the iron chalcogenides is known to give rise to bulk insulating states with no known analogue in the iron arsenide phase diagrams. We have studied the structure, magnetic, and transport properties of copper substituted iron telluride

Invar-like Behavior of Antiperovskite Mn 3+x Ni 1-x N Compounds

March 5, 2015
Author(s)
Sihao Deng, Ying Sun, Hui Wu, Qingzhen Huang, Jun Yan, Kewen Shi, Muhammad Imran Malik, Huiqing Lu, Lei Wang, Rongjin Huang, Laifeng Li, Cong Wang
The antiperovskite Mn 3+xNi 1-xN compounds have been synthesized and characterized by a variety of experimental techniques. After Mn doping at Ni site, both ferromagnetic characteristics and Invar-like effect were observed in the antiferromagnetic host

Structural Behavior of Li 2 B 10 H 10

March 2, 2015
Author(s)
Hui Wu, Wan Si NMN Tang, Vitalie Stavila, Wei Zhou, John J. Rush, Terrence J. Udovic
Based on x-ray and neutron powder diffraction, first-principles calculations, and neutron vibrational spectroscopy, Li 2B 10H 10 was found to exhibit atypical hexagonal-close-packed symmetry to best stabilize the ionic packing of the relatively small Li +

Coexistence of Superconductivity and Antiferromagnetism in (Li 0.8 Fe 0.2 ) OHFeSe

March 1, 2015
Author(s)
X. F. Lu, N. Z. Wang, Hui Wu, Y. P. Wu, D. Zhao, X. Z. Zeng, X. G. Luo, T. Wu, W. Bao, G. H. Zhang, F. Q. Huang, Qingzhen Huang, X. H. Chen
FeSe-derived superconductors show some unique behaviors relative to iron-pnictide superconductors, which are very helpful to understand the mechanism of superconductivity in high-T c iron-based superconductors. The low-energy electronic structure of the

Reference Diffraction Patterns, Microstructure, and Pore Size Distribution for the Copper (II) benzene-1,3,5-tricarboxylate Metal Organic Framework (Cu-BTC) Compounds

March 1, 2015
Author(s)
Winnie K. Wong-Ng, James A. Kaduk, Daniel W. Siderius, Andrew J. Allen, Laura Espinal, Brad Boyerinas, Igor Levin, Matthew Suchomel, Jan Ilavsky, Eric J. Cockayne, Hui Wu
Cu-paddle-wheel-based Cu3(BTC)2 (nicknamed Cu-BTC, where BTC ≡ benzene 1,3,5-tricarboxylate) is a metal organic framework (MOF) compound that adopts a zeolite topology. We have determined the pore size distribution using the Gelb and Gubbins technique, the

Giant Negative Thermal Expansion in Bonded MnCoGe-Based Compounds with Ni 2 In-Type Hexagonal Structure

February 11, 2015
Author(s)
Ying-Ying Zhao, Feng-Xia Hu, Li-Fu Bao, Jing Wang, Hui Wu, Qingzhen Huang, Rong-Rong Wu, Yao Liu, Fei-Ran Shen, Hao Kuang, Ming Zhang, Wen-Liang Zuo, Xin-Qi Zheng, Ji-Rong Sun, Bao-Gen Shen
MnCoGe-based compounds undergo a large negative thermal expansion (NTE) during the martensitic structural transition from Ni 2In-type hexagonal to TiNiSi-type orthorhombic structure. High resolution neutron diffraction experiments revealed that the

An Iodide-Based Li 7 P 2 S 8 I Superionic Conductor

February 3, 2015
Author(s)
Ezhiylmurugan Rangasamy, Zengcai Liu, Mallory Gobet, Kartik Pilar, Gayatri Sahu, Wei Zhou, Hui Wu, Steve Greenbaum, Chengdu Liang
A Li 7P 2S 8I solid state Li-ion conductor derived from β-Li 3PS 4 and LiI demonstrates exceptional electrochemical stability. The oxidation instability if 'I' is subverted via its incorporation into the coordinated structure. The inclusion of 'I' also

A Rod-Packing Microporous Hydrogen-Bonded Organic Framework for Highly Selective Separation of C 2 H 2 /CO 2 at Room Temperature

January 7, 2015
Author(s)
Peng Li, Yabing He, Yunfeng Zhao, Linhong Weng, Hailong Wang, Rajamani Krishna, Hui Wu, Wei Zhou, Michael O'Keeffe, Yu Han, Banglin Chen
Self-assembly of well-designed trigonal building subunit with diaminotriazines (DAT)functional groups leads to a unique rod-packing 3D microporous hydrogen-bonded organic framework (HOF-3). This HOF-3 material shows permanent porosity and demonstrates

Structure and Magnetic Properties of the a-NaFeO 2 -Type Honeycomb Compound Na 3 Ni 2 BiO 6

November 15, 2014
Author(s)
Elizabeth M. Seibel, J. H. Roudebush, Hui Wu, Qingzhen Huang, Mazhar N. Ali, Huiwen Ji, R. J. Cava
We present the structure and magnetic properties of Na 3Ni 2BiO 6, which is an ordered variant of the α-NaFeO 2 structure type. This layered compound has a 2:1 ordering of (Ni 2+/Bi 5+)O 6 octahedra within the a-b plane and sodium in octahedra between the

Exceptional Superionic Conductivity in Disordered Sodium Decahydro-closo-decaborate

October 13, 2014
Author(s)
Terrence J. Udovic, Motoaki Matsuo, Wan Si NMN Tang, Hui Wu, Vitalie Stavila, Alexei V. Soloninin, Roman V. Skoryunov, Olga A. Babanova, Alexander Skripov, John J. Rush, Atsushi Unemoto, Hitoshi Takamura, Shin-Ichi Orimo
Na 2B 10h 10 undergoes a transition from an ordered monoclinic phase to a disordered, face-centered-cubic phase near 370 K with the emergence of a vacancy-rich, mobile Na + sublattice exhibiting dramatic superionicity ({approximately equal}0.01 S cm -1 at

Synthesis, Thermal Behaviors and Dehydrogenation Kinetics Studies on Lithiated Ethylenediamine

October 13, 2014
Author(s)
Juner Chen, Guotao Wu, Zhitao Xiong, Hui Wu, Yong Shen Chua, Wei Zhou, Bin Liu, Xiaohua Ju, Ping Chen
The lithiation of ethylenediamine by LiH is a step-wise process forming the partially lithiated intermidiates LiN(H)CH 2CH 2NH 2 and [LiN(H)CH 2CH 2NH 2][LiN(H)CH 2CH 2N(H)Li] 2 prior to the formation of dilithiated ethylenediamine LiN(H)CH 2CH 2N(H)Li. A
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