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  1. Article ; Online: Efficient electrocatalytic oxygen reduction reaction of thermally optimized carbon black supported zeolitic imidazolate framework nanocrystals under low-temperature.

    Chen, Jinyi / Guo, Jian / Zhang, Hong / Brett, Dan J L / Gadipelli, Srinivas

    RSC advances

    2023  Volume 13, Issue 49, Page(s) 34556–34561

    Abstract: Turning commercially available low-cost conducting carbon black materials into functional electrocatalytic electrode media using simple surface chemical modification is a highly attractive approach. This study reports on remarkably enhanced oxygen ... ...

    Abstract Turning commercially available low-cost conducting carbon black materials into functional electrocatalytic electrode media using simple surface chemical modification is a highly attractive approach. This study reports on remarkably enhanced oxygen electrocatalytic activity of commercially available Ketjenblack (KB) by growing a non-precious cobalt metal-based zeolitic-imidazolate framework (ZIF-67) at room temperature in methanol solution followed by a mild thermolysis. The resulting Co@CoO
    Language English
    Publishing date 2023-11-24
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d3ra07754c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Seed-Mediated, Shape-Controlled Synthesis Methods for Platinum-Based Electrocatalysts for the Oxygen Reduction Reaction-A Mini Review.

    Gray, Daisy E / Munshi, Tasnim / Scowen, Ian J / Brett, Dan J L / He, Guanjie

    Frontiers in chemistry

    2022  Volume 10, Page(s) 865214

    Abstract: Overcoming the slow oxygen reduction reaction (ORR) kinetics at the cathode of the hydrogen fuel cells requires the use of electrocatalysts containing expensive and scare platinum to achieve reasonable performance, hampering widespread use of the ... ...

    Abstract Overcoming the slow oxygen reduction reaction (ORR) kinetics at the cathode of the hydrogen fuel cells requires the use of electrocatalysts containing expensive and scare platinum to achieve reasonable performance, hampering widespread use of the technology due to high material costs and sustainability issues. One option available to tackle this issue is to use new designs to create nanomaterials which achieve excellent electrocatalytic performances and long-lasting stabilities whilst using less platinum than is currently required. Reliably producing nanomaterials with predictable activities and stabilities using simple, safe, and scalable methods is an important research topic to the advancement of fuel cell technologies. The oxygen reduction reaction occurs at the surface of electrocatalytic materials, and since nanomaterial structures exhibit different catalytic activities, their shapes have a strong relationship to the final performance. Seed-mediated synthesis can be used to control the shape of materials with the aim of obtaining products with the most desirable surface properties for the ORR. This review summarized the current advancement of the synthesis of platinum-based ORR and provided the insights for the future development of this field.
    Language English
    Publishing date 2022-03-04
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2711776-5
    ISSN 2296-2646
    ISSN 2296-2646
    DOI 10.3389/fchem.2022.865214
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Observation of Zn Dendrite Growth via Operando Digital Microscopy and Time-Lapse Tomography.

    Du, Wenjia / Zhang, Zhenyu / Iacoviello, Francesco / Zhou, Shangwei / Owen, Rhodri E / Jervis, Rhodri / Brett, Dan J L / Shearing, Paul R

    ACS applied materials & interfaces

    2023  

    Abstract: The zinc-ion battery is one of the promising candidates for next-generation energy storage devices beyond lithium technology due to the earth's abundance of Zn materials and their high volumetric energy density (5855 mA h ... ...

    Abstract The zinc-ion battery is one of the promising candidates for next-generation energy storage devices beyond lithium technology due to the earth's abundance of Zn materials and their high volumetric energy density (5855 mA h cm
    Language English
    Publishing date 2023-03-09
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.2c19895
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Black Phosphorus Degradation during Intercalation and Alloying in Batteries.

    Said, Samia / Zhang, Zhenyu / Shutt, Rebecca R C / Lancaster, Hector J / Brett, Dan J L / Howard, Christopher A / Miller, Thomas S

    ACS nano

    2023  Volume 17, Issue 7, Page(s) 6220–6233

    Abstract: Numerous layered materials are being recognized as promising candidates for high-performance alkali-ion battery anodes, but black phosphorus (BP) has received particular attention. This is due to its high specific capacity, due to a mixed alkali-ion ... ...

    Abstract Numerous layered materials are being recognized as promising candidates for high-performance alkali-ion battery anodes, but black phosphorus (BP) has received particular attention. This is due to its high specific capacity, due to a mixed alkali-ion storage mechanism (intercalation-alloying), and fast alkali-ion transport within its layers. Unfortunately, BP based batteries are also commonly associated with serious irreversible losses and poor cycling stability. This is known to be linked to alloying, but there is little experimental evidence of the morphological, mechanical, or chemical changes that BP undergoes in operational cells and thus little understanding of the factors that must be mitigated to optimize performance. Here the degradation mechanisms of BP alkali-ion battery anodes are revealed through
    Language English
    Publishing date 2023-03-27
    Publishing country United States
    Document type Journal Article
    ISSN 1936-086X
    ISSN (online) 1936-086X
    DOI 10.1021/acsnano.2c08776
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Understanding and Optimizing Capacitance Performance in Reduced Graphene-Oxide Based Supercapacitors.

    Gadipelli, Srinivas / Guo, Jian / Li, Zhuangnan / Howard, Christopher A / Liang, Yini / Zhang, Hong / Shearing, Paul R / Brett, Dan J L

    Small methods

    2023  Volume 7, Issue 6, Page(s) e2201557

    Abstract: Reduced graphene-oxide (RGO)-based electrodes in supercapacitors deliver high energy/power capacities compared to typical nanoporous carbon materials. However, extensive critical analysis of literature reveals enormous discrepancies (up to 250 F ... ...

    Abstract Reduced graphene-oxide (RGO)-based electrodes in supercapacitors deliver high energy/power capacities compared to typical nanoporous carbon materials. However, extensive critical analysis of literature reveals enormous discrepancies (up to 250 F g
    Language English
    Publishing date 2023-03-09
    Publishing country Germany
    Document type Journal Article
    ISSN 2366-9608
    ISSN (online) 2366-9608
    DOI 10.1002/smtd.202201557
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Deploying Proteins as Electrolyte Additives in Li-S Batteries: The Multifunctional Role of Fibroin in Improving Cell Performance.

    Soni, Roby / Spadoni, Damiano / Shearing, Paul R / Brett, Dan J L / Lekakou, Constantina / Cai, Qiong / Robinson, James B / Miller, Thomas S

    ACS applied energy materials

    2023  Volume 6, Issue 11, Page(s) 5671–5680

    Abstract: It is widely accepted that the commercial application of lithium-sulfur batteries is inhibited by their short cycle life, which is primarily caused by a combination of Li dendrite formation and active material loss due to polysulfide shuttling. ... ...

    Abstract It is widely accepted that the commercial application of lithium-sulfur batteries is inhibited by their short cycle life, which is primarily caused by a combination of Li dendrite formation and active material loss due to polysulfide shuttling. Unfortunately, while numerous approaches to overcome these problems have been reported, most are unscalable and hence further hinder Li-S battery commercialization. Most approaches suggested also only tackle one of the primary mechanisms of cell degradation and failure. Here, we demonstrate that the use of a simple protein, fibroin, as an electrolyte additive can both prevent Li dendrite formation and minimize active material loss to enable high capacity and long cycle life (up to 500 cycles) in Li-S batteries, without inhibiting the rate performance of the cell. Through a combination of experiments and molecular dynamics (MD) simulations, it is demonstrated that the fibroin plays a dual role, both binding to polysulfides to hinder their transport from the cathode and passivating the Li anode to minimize dendrite nucleation and growth. Most importantly, as fibroin is inexpensive and can be simply introduced to the cell via the electrolyte, this work offers a route toward practical industrial applications of a viable Li-S battery system.
    Language English
    Publishing date 2023-05-31
    Publishing country United States
    Document type Journal Article
    ISSN 2574-0962
    ISSN (online) 2574-0962
    DOI 10.1021/acsaem.2c04131
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Probing adsorbent heterogeneity using Toth isotherms

    Kumar, K. Vasanth / Gadipelli, Srinivas / Howard, Christopher A / Kwapinski, Witold / Brett, Dan J. L

    Journal of materials chemistry A. 2021 Jan. 19, v. 9, no. 2

    2021  

    Abstract: The binding affinity distribution is a fingerprint of the adsorbent heterogeneity. In chromatographic separations, the affinity distribution determines the molecular recognition capability of the stationary phases. In gas storage and separation ... ...

    Abstract The binding affinity distribution is a fingerprint of the adsorbent heterogeneity. In chromatographic separations, the affinity distribution determines the molecular recognition capability of the stationary phases. In gas storage and separation applications, the affinity distribution decides the selectivity towards a target molecule. The end application of almost every molecular recognizing material like molecularly imprinted polymers (MIPs) critically depend on their affinity distribution. In this work, we develop two simple analytical expressions by coupling a numerical technique with the widely used Toth isotherms. These models are universally applicable and can accurately characterize different classes of industrially-important adsorbents that include metal organic frameworks, carbon allotropes and chromatographic stationary phases for their selectivity, binding affinity and adsorption site heterogeneity. The models require only the Toth isotherm parameters to characterize both homogeneous or heterogeneous adsorbents.
    Keywords adsorbents ; adsorption ; carbon ; chromatography ; molecular imprinting ; sorption isotherms ; statistical analysis
    Language English
    Dates of publication 2021-0119
    Size p. 944-962.
    Publishing place The Royal Society of Chemistry
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 2702232-8
    ISSN 2050-7496 ; 2050-7488
    ISSN (online) 2050-7496
    ISSN 2050-7488
    DOI 10.1039/d0ta08150g
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Observation of Zn Dendrite Growth via Operando Digital Microscopy and Time-Lapse Tomography

    Du, Wenjia / Zhang, Zhenyu / Iacoviello, Francesco / Zhou, Shangwei / Owen, Rhodri E. / Jervis, Rhodri / Brett, Dan J. L. / Shearing, Paul R.

    ACS Applied Materials & Interfaces. 2023 Mar. 09, v. 15, no. 11 p.14196-14205

    2023  

    Abstract: The zinc-ion battery is one of the promising candidates for next-generation energy storage devices beyond lithium technology due to the earth's abundance of Zn materials and their high volumetric energy density (5855 mA h cm-³). To date, the formation of ...

    Abstract The zinc-ion battery is one of the promising candidates for next-generation energy storage devices beyond lithium technology due to the earth's abundance of Zn materials and their high volumetric energy density (5855 mA h cm-³). To date, the formation of Zn dendrites during charge-discharge cycling still hinders the practical application of zinc-ion batteries. It is, therefore, crucial to understand the formation mechanism of the zinc dendritic structure before effectively suppressing its growth. Here, the application of operando digital optical microscopy and in situ lab-based X-ray computed tomography (X-ray CT) is demonstrated to probe and quantify the morphologies of zinc electrodeposition/dissolution under multiple galvanostatic plating/stripping conditions in symmetric Zn||Zn cells. With the combined microscopy approaches, we directly observed the dynamic nucleation and subsequent growth of Zn deposits, the heterogeneous transportation of charged clusters/particles, and the evolution of 'dead' Zn particles via partial dissolution. Zn electrodeposition at the early stage is mainly attributed to activation, while the subsequent dendrite growth is driven by diffusion. The high current not only facilitates the formation of sharp dendrites with a larger mean curvature at their tips but also leads to dendritic tip splitting and the creation of a hyper-branching morphology. This approach offers a direct opportunity to characterize dendrite formation in batteries with a metal anode in the laboratory.
    Keywords X-radiation ; anodes ; batteries ; computed tomography ; electroplating ; energy ; energy density ; light microscopy ; lithium ; transportation ; zinc ; zinc electrodeposition ; dendrites ; plating ; stripping ; X-ray computed tomography
    Language English
    Dates of publication 2023-0309
    Size p. 14196-14205.
    Publishing place American Chemical Society
    Document type Article ; Online
    ISSN 1944-8252
    DOI 10.1021/acsami.2c19895
    Database NAL-Catalogue (AGRICOLA)

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  9. Article ; Online: In-Situ Li-Ion Pouch Cell Diagnostics Utilising Plasmonic Based Optical Fibre Sensors.

    Gardner, Christopher / Langhammer, Elin / Du, Wenjia / Brett, Dan J L / Shearing, Paul R / Roberts, Alexander J / Amietszajew, Tazdin

    Sensors (Basel, Switzerland)

    2022  Volume 22, Issue 3

    Abstract: As the drive to improve the cost, performance characteristics and safety of lithium-ion batteries increases with adoption, one area where significant value could be added is that of battery diagnostics. This paper documents an investigation into the use ... ...

    Abstract As the drive to improve the cost, performance characteristics and safety of lithium-ion batteries increases with adoption, one area where significant value could be added is that of battery diagnostics. This paper documents an investigation into the use of plasmonic-based optical fibre sensors, inserted internally into 1.4 Ah lithium-ion pouch cells, as a real time and in-situ diagnostic technique. The successful implementation of the fibres inside pouch cells is detailed and promising correlation with battery state is reported, while having negligible impact on cell performance in terms of capacity and columbic efficiency. The testing carried out includes standard cycling and galvanostatic intermittent titration technique (GITT) tests, and the use of a reference electrode to correlate with the anode and cathode readings separately. Further observations are made around the sensor and analyte interaction mechanisms, robustness of sensors and suggested further developments. These finding show that a plasmonic-based optical fibre sensor may have potential as an opto-electrochemical diagnostic technique for lithium-ion batteries, offering an unprecedented view into internal cell phenomena.
    MeSH term(s) Electric Power Supplies ; Electrodes ; Ions ; Lithium ; Optical Fibers
    Chemical Substances Ions ; Lithium (9FN79X2M3F)
    Language English
    Publishing date 2022-01-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s22030738
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Inhibition of Vanadium Cathodes Dissolution in Aqueous Zn-Ion Batteries.

    Dai, Yuhang / Zhang, Chengyi / Li, Jianwei / Gao, Xuan / Hu, Ping / Ye, Chumei / He, Hongzhen / Zhu, Jiexin / Zhang, Wei / Chen, Ruwei / Zong, Wei / Guo, Fei / Parkin, Ivan P / Brett, Dan J L / Shearing, Paul R / Mai, Liqiang / He, Guanjie

    Advanced materials (Deerfield Beach, Fla.)

    2024  Volume 36, Issue 14, Page(s) e2310645

    Abstract: Aqueous zinc-ion batteries (AZIBs) have experienced a rapid surge in popularity, as evident from the extensive research with over 30 000 articles published in the past 5 years. Previous studies on AZIBs have showcased impressive long-cycle stability at ... ...

    Abstract Aqueous zinc-ion batteries (AZIBs) have experienced a rapid surge in popularity, as evident from the extensive research with over 30 000 articles published in the past 5 years. Previous studies on AZIBs have showcased impressive long-cycle stability at high current densities, achieving thousands or tens of thousands of cycles. However, the practical stability of AZIBs at low current densities (<1C) is restricted to merely 50-100 cycles due to intensified cathode dissolution. This genuine limitation poses a considerable challenge to their transition from the laboratory to the industry. In this study, leveraging density functional theory (DFT) calculations, an artificial interphase that achieves both hydrophobicity and restriction of the outward penetration of dissolved vanadium cations, thereby shifting the reaction equilibrium and suppressing the vanadium dissolution following Le Chatelier's principle, is described. The approach has resulted in one of the best cycling stabilities to date, with no noticeable capacity fading after more than 200 cycles (≈720 h) at 200 mA g
    Language English
    Publishing date 2024-01-23
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202310645
    Database MEDical Literature Analysis and Retrieval System OnLINE

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