Changtai Zhao

General Research Institute for Nonferrous Metals (China)

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Jieshan Qiu

Beijing University of Chemical Technology

Chang Yu

Dalian University

Xueliang Sun

Western University

Huawei Huang

Yangtze River Delta Physics Research Center (China)

Juan Yang

Xi'an Jiaotong University

Xiaotong Han

Hunan Provincial People's Hospital

Shaofeng Li

Technical University of Denmark

Ruying Li

Western University

Jianwen Liang

Grinm Advanced Materials (China)

Yang Zhao

Nankai University

Cooperative Institutions

Chinese Academy of Sciences

Dalian University of Technology

Western University

Dalian University

Grinm Advanced Materials (China)

University of Chinese Academy of Sciences

University of Science and Technology of China

Harbin Institute of Technology

Transnational Press London

University of Science and Technology Beijing

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Sodium‐Ion Batteries: Ultrafine MoO₂‐Carbon Microstructures Enable Ultralong‐Life Power‐Type Sodium Ion Storage by Enhanced Pseudocapacitance (Adv. Energy Mater. 15/2017)

Advanced Energy Materials (2017)

Changtai Zhao Chang Yu Mengdi Zhang Huawei Huang Shaofeng Li

High-rate and long-life sodium storage is achieved by using the nanorod-shaped core-shell architecture functionalized with the ultrafine MoO2 nanoparticles embedded in carbon matrix. As reported by Chang Yu, Xueliang Sun, Jieshan Qiu, and co-workers in article number 1602880, the ultra-long cycle life up to 10000 cycles and ultra-high rate capability of ≈13.7 s for full charge is due to the enhanced pseudocapacitance behavior.

Pseudocapacitance

Nanorod

Carbon fibers

10.1002/aenm.201770081

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Citations (3)

Cobalt-embedded nitrogen-doped hollow carbon nanorods for synergistically immobilizing the discharge products in lithium–sulfur battery

Energy storage materials (2016)

Mengdi Zhang Chang Yu Changtai Zhao Xuedan Song Xiaotong Han

Nanorod

Carbon fibers

Lithium–sulfur battery

10.1016/j.ensm.2016.04.002

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Citations (152)

Tailor-made graphene aerogels with inbuilt baffle plates by charge-induced template-directed assembly for high-performance Li–S batteries

Journal of Materials Chemistry A (2015)

Changtai Zhao Chang Yu Mengdi Zhang Juan Yang Shaohong Liu

Self-closure graphene aerogels with inbuilt baffle plates were configured by charge-induced template-directed assembly, delivering an enhanced performance in Li–S batteries.

Baffle

10.1039/c5ta05146k

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Citations (35)

Optimization of a piezoelectric bimorph grasper for use in minimally invasive surgical applications

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture (2005)

M. Grujičić Changtai Zhao Eric M. Austin

The potential use of piezoelectric bimorph actuators in minimally invasive surgery suture-needle grasper/holder applications is explored computationally. Upon defining the design/functional requirements for such surgical tools, a finite element analysis of the underlying piezoelectric boundary value problem is combined with the genetic algorithm optimization routine to arrive at an optimal morphology of the suture-needle grasper/holder. The results obtained show that, if the actuator is based on several constant-thickness segments, a proper combination of thicknesses of such segments can substantially improve the performance of such surgical tools. Specifically, a good combination of the relatively large grasper-jaws opening and the required level of the holding force when the grasper is closed on a 0.5 mm diameter suture-needle is obtained. The effect of orientation of the poling direction in the piezoelectric layers on the performance of the bimorph actuator is also examined. It is found that, at the same level of the required grasping force, a change in the poling direction by about 2.3° from the through-the-thickness direction can increase the maximum grasper-jaws opening by about 10 per cent.

Bimorph

Invasive surgery

Poling

Compliant mechanism

10.1243/095440505x32607

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Citations (8)

Boosting charge storage in 1D manganese oxide-carbon composite by phosphorus-assisted structural modification for supercapacitor applications

Energy storage materials (2020)

Wei Guo Chang Yu Changtai Zhao Wang Zhao Shaofeng Li

10.1016/j.ensm.2020.06.008

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Citations (38)

Highly Stable Lithium Metal Anode Interface via Molecular Layer Deposition Zircone Coatings for Long Life Next‐Generation Battery Systems

Angewandte Chemie (2019)

Keegan R. Adair Changtai Zhao Mohammad Norouzi Banis Yang Zhao Ruying Li

Abstract Herein, molecular layer deposition is used to form a nanoscale “zircone” protective layer on Li metal to achieve stable and long life Li metal anodes. The zircone‐coated Li metal shows enhanced air stability, electrochemical performance and high rate capability in symmetrical cell testing. Moreover, as a proof of concept, the protected Li anode is used in a next‐generation Li‐O 2 battery system and is shown to extend the lifetime by over 10‐fold compared to the batteries with untreated Li metal. Furthermore, in‐situ synchrotron X‐ray absorption spectroscopy is used for the first time to study an artificial SEI on Li metal, revealing the electrochemical stability and lithiation of the zircone film. This work exemplifies significant progress towards the development and understanding of MLD thin films for high performance next‐generation batteries.

10.1002/ange.201907759

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Citations (20)

Ultrafine MoO₂‐Carbon Microstructures Enable Ultralong‐Life Power‐Type Sodium Ion Storage by Enhanced Pseudocapacitance

Advanced Energy Materials (2017)

Changtai Zhao Chang Yu Mengdi Zhang Huawei Huang Shaofeng Li

The achievement of the superior rate capability and cycling stability is always the pursuit of sodium‐ion batteries (SIBs). However, it is mainly restricted by the sluggish reaction kinetics and large volume change of SIBs during the discharge/charge process. This study reports a facile and scalable strategy to fabricate hierarchical architectures where TiO 2 nanotube clusters are coated with the composites of ultrafine MoO 2 nanoparticles embedded in carbon matrix (TiO 2 @MoO 2 ‐C), and demonstrates the superior electrochemical performance as the anode material for SIBs. The ultrafine MoO 2 nanoparticles and the unique nanorod structure of TiO 2 @MoO 2 ‐C help to decrease the Na + diffusion length and to accommodate the accompanying volume expansion. The good integration of MoO 2 nanoparticles into carbon matrix and the cable core role of TiO 2 nanotube clusters enable the rapid electron transfer during discharge/charge process. Benefiting from these structure merits, the as‐made TiO 2 @MoO 2 ‐C can deliver an excellent cycling stability up to 10 000 cycles even at a high current density of 10 A g −1 . Additionally, it exhibits superior rate capacities of 110 and 76 mA h g −1 at high current densities of 10 and 20 A g −1 , respectively, which is mainly attributed to the high capacitance contribution.

Pseudocapacitance

Nanorod

10.1002/aenm.201602880

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Citations (326)

Ionic Conductive and Highly‐Stable Interface for Alkali Metal Anodes

Small (2022)

Enzhong Jin Karnpiwat Tantratian Changtai Zhao Anastasia M Codirenzi Lyudmila V. Goncharova

Alkali metals are regarded as the most promising candidates for advanced anode for the next-generation batteries due to their high specific capacity, low electrochemical potential, and lightweight. However, critical problems of the alkali metal anodes, especially dendrite formation and interface stabilization, remain challenging to overcome. The solid electrolyte interphase (SEI) is a key factor affecting Li and Na deposition behavior and electrochemical performances. Herein, a facile and universal approach is successfully developed to fabricate ionic conductive interfaces for Li and Na metal anodes by modified atomic layer deposition (ALD). In this process, the Li metal (or Na metal) plays the role of Li (or Na) source without any additional Li (or Na) precursor during ALD. Moreover, the key questions about the influence of ALD deposition temperature on the compositions and structure of the coatings are addressed. The optimized ionic conductive coatings have significantly improved the electrochemical performances. In addition, the electrochemical phase-field model is performed to prove that the ionic conductive coating is very effective in promoting uniform electrodeposition. This approach is universal and can be potentially applied to other different metal anodes. At the same time, it can be extended to other types of coatings or other deposition techniques.

Interface (matter)

10.1002/smll.202203045

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Citations (16)

Insights into the electronic origin of enhancing the catalytic activity of Co3O4 for oxygen evolution by single atom ruthenium

Nano Today (2020)

Changtai Zhao Yan Tang Chang Yu Xinyi Tan Mohammad Norouzi Banis

Overpotential

Oxygen evolution

10.1016/j.nantod.2020.100955

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Citations (42)

Strongly Coupled Architectures of Cobalt Phosphide Nanoparticles Assembled on Graphene as Bifunctional Electrocatalysts for Water Splitting

ChemElectroChem (2016)

Huawei Huang Chang Yu Juan Yang Changtai Zhao Xiaotong Han

Abstract The front cover artwork is provided by Jieshan Qiu, Chang Yu, and co‐workers, Dalian University of Technology (China). The work reports a novel approach to fabricate bifunctional electrocatalysts for full water splitting by anchoring the cobalt phosphide nanoparticles with enriched active sites onto conductive graphene matrix. Read the full text of the Article at 10.1002/celc.201600001 .

Phosphide

Front cover

10.1002/celc.201600165

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Citations (0)