Research Repository

See what's under the surface


Cross-linked Ni(OH)2/CuCo2S4/Ni networks as binder-free electrodes for high performance supercapatteries (2018)
Journal Article
Tang, N., You, H., Li, M., Chen, G. Z., & Zhang, L. (2018). Cross-linked Ni(OH)2/CuCo2S4/Ni networks as binder-free electrodes for high performance supercapatteries. Nanoscale, 10(44), 20526-20532. doi:10.1039/c8nr05662e

The heterogeneous Ni(OH)2/CuCo2S4/Ni electrode is constructed by appropriately adjusting the time-dependent hydrothermal and electrodeposition process. A hybrid device exhibits 39.7 Wh kg-1 in specific energy and 365.3 W kg-1 in specific power, with... Read More

Polymer composites with functionalised carbon nanotube and graphene (2018)
Book Chapter
Wei, C. H., Akinwolemiwa, B., Yu, L. P., Hu, D., & Chen, G. Z. (2019). Polymer composites with functionalised carbon nanotube and graphene. In K. Pielichowski, & T. Majka (Eds.), Polymer Composites with Functionalized Nanoparticles: Synthesis, Properties, and Applications, 211-248. Elsevier. doi:10.1016/B978-0-12-814064-2.00007-X

The functionalization of carbon nanotubes (CNTs) and graphene (GN) has been shown to be an important prerequisite for the effective coating of their surfaces with polymers. In this chapter, the methods of introducing carboxylic, carbonyl, sulfonic, a... Read More

Building porous graphene architectures for electrochemical energy storage devices (2018)
Book Chapter
Chen, G. Z., & Chen, Y. (2018). Building porous graphene architectures for electrochemical energy storage devices. In R. Rajagopalan, & A. Balakrishnan (Eds.), Innovations in Engineered Porous Materials for Energy Generation and Storage Applications, 86-108. Taylor & Francis. doi:10.1201/9781315184401-3

This chapter offers a critical review of graphene based porous materials for energy applications. Three main recent progresses are discussed on materials synthesis, including (1) potassium hydroxide activated graphenes, (2) graphene hydrogels from hy... Read More

A rechargeable high-temperature molten salt iron-oxygen battery (2018)
Journal Article
Peng, C., Guan, C., Lin, J., Zhang, S., Bao, H., Wang, Y., …Wang, J. (in press). A rechargeable high-temperature molten salt iron-oxygen battery. ChemSusChem, doi:10.1002/cssc.201800237. ISSN 1864-5631

The energy and power density of conventional batteries are far lower than their theoretical expectations, primarily because of the slow reaction kinetics in the battery that is often working under ambient conditions. Here we describe a low-cost and h... Read More

Molecular level one-step activation of agar to activated carbon for high performance supercapacitors (2018)
Journal Article
Zhang, L., Gu, H., Sun, H., Cao, F., Chen, Y., & Chen, G. Z. (2018). Molecular level one-step activation of agar to activated carbon for high performance supercapacitors. Carbon, 132, doi:10.1016/j.carbon.2018.02.100. ISSN 0008-6223

Activated carbon was synthesized by a simple one-step calcination of deoxygenated agar in a hot KOH aqueous solution, in which KOH plays both deoxidant and activation agent. The deoxygenation course omits high temperature carbonization in the convent... Read More

Highly efficient sulfonic/carboxylic dual-acid synergistic catalysis for esterification enabled by sulfur-rich graphene oxide (2017)
Journal Article
Zhang, H., Luo, X., Shi, K., Wu, T., He, F., Zhou, S., …Peng, C. (2017). Highly efficient sulfonic/carboxylic dual-acid synergistic catalysis for esterification enabled by sulfur-rich graphene oxide. ChemSusChem, 10(17), doi:10.1002/cssc.201700950. ISSN 1864-5631

A new sulfonic/carboxylic dual-acid catalyst based on sulfur-rich graphene oxide (GO-S) was readily prepared and used as a highly efficient and reusable solid acid catalyst toward the esterification of oleic acid with methanol for biodiesel productio... Read More

Faradaic processes beyond Nernst’s law: density functional theory assisted modelling of partial electron delocalisation and pseudocapacitance in graphene oxides (2017)
Journal Article
theory assisted modelling of partial electron delocalisation and pseudocapacitance in graphene oxides. Chemical Communications, 53(75), doi:10.1039/C7CC04344A. ISSN 1359-7345

The study of electron delocalisation in oxygen atom segregated zones in graphene, aided by the first-principles density functional theory, has revealed extra energy bands of ≥ 2 eV wide around the Fermi level, predicting faradaic charge storage occur... Read More

Advances on transition metal oxides catalysts for formaldehyde oxidation: a review (2017)
Journal Article
Yusuf, A., Snape, C., He, J., Xu, H., Liu, C., Zhao, M., …Behera, S. N. (in press). Advances on transition metal oxides catalysts for formaldehyde oxidation: a review. Catalysis Reviews: Science and Engineering, doi:10.1080/01614940.2017.1342476. ISSN 0161-4940

This review highlights recent advances in the development of transition metal based catalysts for formaldehyde oxidation, particularly the enhancement of their catalytic activity for low temperature oxidation. Various factors that enhance low tempera... Read More

Mechanisms and designs of asymmetrical electrochemical capacitors (2017)
Journal Article
Akinwolemiwa, B., Wei, C., & Chen, G. Z. (2017). Mechanisms and designs of asymmetrical electrochemical capacitors. Electrochimica Acta, 247, doi:10.1016/j.electacta.2017.06.088. ISSN 0013-4686

Different charge storage mechanisms in electrochemical energy storage devices are reviewed, including non-Faradaic capacitive, Faradaic capacitive, Faradaic non-capacitive, and their combinations. Specifically, Faradaic capacitive (pseudocapacitive)... Read More

Synthesis and applications of MOF - derived porous nanostructures (2017)
Journal Article
Yap, M. H., Fow, K. L., & Chen, G. Z. (2017). Synthesis and applications of MOF - derived porous nanostructures. Green Energy and Environment, 2(3), doi:10.1016/j.gee.2017.05.003. ISSN 2468-0257

Metal organic frameworks (MOFs) represent a class of porous material which is formed by strong bonds between metal ions and organic linkers. By careful selection of constituents, MOFs can exhibit very high surface area, large pore volume, and excelle... Read More

Inverse nonnegative local coordinate factorization for visual tracking (2017)
Journal Article
Liu, F., Zhou, T., Gong, C., Fu, K., Bai, L., & Yang, J. (in press). Inverse nonnegative local coordinate factorization for visual tracking. IEEE Transactions on Circuits and Systems for Video Technology, doi:10.1109/TCSVT.2017.2699676. ISSN 1051-8215

Recently, nonnegative matrix factorization (NMF) with part based representation has been widely used for appearance modelling in visual tracking. Unfortunately, not all the targets can be successfully decomposed as "parts" unless some rigorous condit... Read More

Effect of the changed electrolytic cell on the current efficiency in FFC Cambridge process (2017)
Journal Article
Hu, M., Zhengfeng, Q., Chenguang, B., Hu, D., & Chen, G. Z. (2017). Effect of the changed electrolytic cell on the current efficiency in FFC Cambridge process. Materials Transactions, 58(3), doi:10.2320/matertrans.MK201623. ISSN 1345-9678

Low current efficiency of the FFC Cambridge process made it no obvious advantages in cost compared with the traditional process to produce metals. Effect of the changed electrolysis cell on the current efficiency has been studied. Put the cathode int... Read More