L. M. Zhang
University of Science and Technology of China
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by L. M. Zhang.
Angewandte Chemie | 2017
Pengzuo Chen; Tianpei Zhou; Lili Xing; Kun Xu; Yun Tong; Hui Xie; L. M. Zhang; Wensheng Yan; Wangsheng Chu; Changzheng Wu; Yi Xie
Rational design of non-noble materials as highly efficient, economical, and durable bifunctional catalysts for oxygen evolution and reduction reactions (OER/ORR) is currently a critical obstacle for rechargeable metal-air batteries. A new route involving S was developed to achieve atomic dispersion of Fe-Nx species on N and S co-decorated hierarchical carbon layers, resulting in single-atom bifunctional OER/ORR catalysts for the first time. The abundant atomically dispersed Fe-Nx species are highly catalytically active, the hierarchical structure offers more opportunities for active sites, and the electrical conductivity is greatly improved. The obtained electrocatalyst exhibits higher limiting current density and a more positive half-wave potential for ORR, as well as a lower overpotential for OER under alkaline conditions. Moreover, a rechargeable Zn-air battery device comprising this hybrid catalyst shows superior performance compared to Pt/C catalyst. This work will open a new avenue to design advanced bifunctional catalysts for reversible energy storage and conversion devices.
Advanced Materials | 2016
Pengzuo Chen; Kun Xu; Shi Tao; Tianpei Zhou; Yun Tong; Hui Ding; L. M. Zhang; Wangsheng Chu; Changzheng Wu; Yi Xie
Phase-transformation engineering is successfully applied in designing an alkaline hydrogen evolution reaction (HER) electrocatalyst. Benefiting from phase-transformation engineering, which endows higher electrical conductivity, ideal water adsorption energy, and faster transformation efficiency of Hads into hydrogen, cubic-phase CoSe2 realizes an enhanced electrocatalytic activity for HER under alkaline conditions.
Advanced Materials | 2017
Pengzuo Chen; Tianpei Zhou; Mengxing Zhang; Yun Tong; Chengan Zhong; Nan Zhang; L. M. Zhang; Changzheng Wu; Yi Xie
Developing non-noble-metal electrocatalysts with high activity and low cost for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is of paramount importance for improving the generation of H2 fuel by electrocatalytic water-splitting. This study puts forward a new N-anion-decorated Ni3 S2 material synthesized by a simple one-step calcination route, acting as a superior bifunctional electrocatalyst for the OER/HER for the first time. The introduction of N anions significantly modifies the morphology and electronic structure of Ni3 S2 , bringing high surface active sites exposure, enhanced electrical conductivity, optimal HER Gibbs free-energy (ΔGH* ), and water adsorption energy change (ΔGH2O* ). Remarkably, the obtained N-Ni3 S2 /NF 3D electrode exhibits extremely low overpotentials of 330 and 110 mV to reach a current density of 100 and 10 mA cm-2 for the OER and HER in 1.0 m KOH, respectively. Moreover, an overall water-splitting device comprising this electrode delivers a current density of 10 mA cm-2 at a very low cell voltage of 1.48 V. Our finding introduces a new way to design advanced bifunctional catalysts for water splitting.
Angewandte Chemie | 2016
Xiaojiao Zhu; Xinyu Dou; Jun Dai; Xingda An; Y. Guo; L. M. Zhang; Shi Tao; Jiyin Zhao; Wangsheng Chu; Xiao Cheng Zeng; Changzheng Wu; Yi Xie
The direct urea fuel cell (DUFC) is an important but challenging renewable energy production technology, it offers great promise for energy-sustainable developments and mitigating water contamination. However, DUFCs still suffer from the sluggish kinetics of the urea oxidation reaction (UOR) owing to a 6 e(-) transfer process, which poses a severe hindrance to their practical use. Herein, taking β-Ni(OH)2 nanosheets as the proof-of-concept study, we demonstrated a surface-chemistry strategy to achieve metallic Ni(OH)2 nanosheets by engineering their electronic structure, representing a first metallic configuration of transition-metal hydroxides. Surface sulfur incorporation successfully brings synergetic effects of more exposed active sites, good wetting behavior, and effective electron transport, giving rise to greatly enhanced performance for UOR. Metallic nanosheets exhibited a much higher current density, smaller onset potential and stronger durability.
Advanced Materials | 2017
Kun Xu; Hui Ding; Mengxing Zhang; Min Chen; Zikai Hao; L. M. Zhang; Changzheng Wu; Yi Xie
Electrochemical water splitting to produce hydrogen renders a promising pathway for renewable energy storage. Considering limited electrocatalysts have good oxygen-evolution reaction (OER) catalytic activity in acid solution while numerous economical materials show excellent OER catalytic performance in alkaline solution, developing new strategies that enhance the alkaline hydrogen-evolution reaction (HER) catalytic activity of cost-effective catalysts is highly desirable for achieving highly efficient overall water splitting. Herein, it is demonstrated that synergistic regulation of water dissociation and optimization of hydrogen adsorption free energy on electrocatalysts can significantly promote alkaline HER catalysis. Using oxygen-incorporated Co2 P as an example, the synergistic effect brings about 15-fold enhancement of alkaline HER activity. Theory calculations confirm that the water dissociation free energy of Co2 P decreases significantly after oxygen incorporation, and the hydrogen adsorption free energy can also be optimized simultaneously. The finding suggests the powerful effectiveness of synergetic regulation of water dissociation and optimization of hydrogen adsorption free energy on electrocatalysts for alkaline HER catalysis.
Physical Review D | 2013
G. Bonvicini; A. Ryd; R. A. Briere; D. L. Hartill; D. G. Cassel; I. P. J. Shipsey; J. Y. Ge; C. Thomas; S. Mehrabyan; P. U. E. Onyisi; J. H. Rademacker; D. H. Miller; S. Dobbs; J. R. Patterson; S. Das; P. Naik; H. Muramatsu; D. Cinabro; B. K. Heltsley; D. Peterson; S. Blusk; T. Skwarnicki; G. Tatishvili; A. Powell; Mark Smith; L. Gibbons; R. Mountain; D. Cronin-Hennessy; X. Shi; T. K. Pedlar
Utilizing the full CLEO-c data sample of 818 pb
Physical Review D | 2012
M. Artuso; S. Blusk; R. Mountain; T. Skwarnicki; S. Stone; L. M. Zhang; T. Gershon; G. Bonvicini; D. Cinabro; A. Lincoln; Mark Smith; P. Zhou; J. Zhu; P. Naik; J. H. Rademacker; D. M. Asner; K. W. Edwards; K. Randrianarivony; G. Tatishvili; R. A. Briere; H. Vogel; P. U. E. Onyisi; J. L. Rosner; J. P. Alexander; D. G. Cassel; S. Das; R. Ehrlich; L. Gibbons; S. W. Gray; D. L. Hartill
^{-1}
Physical Review D | 2009
K. M. Ecklund; D. L. Hartill; S. Mehrabyan; D. H. Miller; F. Yang; B. K. Heltsley; G. Tatishvili; D. Cronin-Hennessy; S. Khalil; J. Wiss; S. W. Gray; N. Lowrey; C. M. Tarbert; R. E. Mitchell; J. P. Alexander; L. Martin; B. Moziak; R. A. Briere; J. Libby; K. W. Edwards; J. Hietala; Q. He; J. Napolitano; G. S. Adams; D. G. Cassel; I. P. J. Shipsey; P. U. E. Onyisi; R. Poling; J. R. Patterson; E. H. Thorndike
of
Journal of Materials Chemistry | 2016
Han Cheng; Kun Xu; Lili Xing; Si Liu; Yue Gong; Lin Gu; L. M. Zhang; Changzheng Wu
e^+e^-
Physical Review D | 2009
T. K. Pedlar; J. Xavier; D. Cronin-Hennessy; K. Y. Gao; J. Hietala; T. Klein; R. Poling; P. Zweber; S. Dobbs; Z. Metreveli; K. K. Seth; B. J. Y. Tan; A. Tomaradze; J. Libby; L. Martin; A. Powell; C. Thomas; G. Wilkinson; H. Mendez; J. Y. Ge; D. H. Miller; I. P. J. Shipsey; B. Xin; G. S. Adams; D. Hu; B. Moziak; J. Napolitano; K. M. Ecklund; Q. He; J. Insler
data taken at the