ORCID Profile
0000-0002-5145-7751
Current Organisation
Chongqing Technology and Business University
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Publisher: Wiley
Date: 28-03-2019
Publisher: American Chemical Society (ACS)
Date: 06-07-2018
Abstract: Metal selenides have attracted increased attention as promising electrode materials for electrochemical energy storage and conversion systems including metal-ion batteries and water splitting. However, their practical application is greatly hindered by collapse of the microstructure, thus leading to performance fading. Tuning the structure at nanoscale of these materials is an effective strategy to address the issue. Herein, we craft MoSe
Publisher: Springer Science and Business Media LLC
Date: 07-11-2014
Publisher: Springer Science and Business Media LLC
Date: 28-06-2018
Publisher: Elsevier BV
Date: 04-2016
Publisher: Springer Science and Business Media LLC
Date: 24-07-2018
DOI: 10.1557/JMR.2017.282
Publisher: Wiley
Date: 09-04-2016
Publisher: Wiley
Date: 04-02-2021
Abstract: A novel Sn(OH) 4 /mesocarbon microbeads (MCMB) anode material has been successfully prepared by skillfully encapsulating the Sn(OH) 4 nanoparticles into the micropores of MCMB via a simple vapor deposition approach. The electrochemical results demonstrate that the Sn(OH) 4 /MCMB anode exhibits a high reversible capacity of 904 mAh g −1 after 500 cycles at a current density of 100 mA g −1 , which is far higher than that of the SnO 2 /MCMB (501 mAh g −1 ) and Sn/MCMB (364 mAh g −1 ). Such transcendence can be attributed to the ultrasmall sizes of Sn(OH) 4 nanoparticles and rapid lithium ions transport channels provided by micropores on the surface of MCMB. More importantly, the encapsulated Sn(OH) 4 particles inside the micropores decrease the exposure to the electrolyte to ensure the formation of stable solid electrolyte interphase films as well as accommodating electrode expansion during charge–discharge, which is beneficial to achieve a stable cycling performance. Therefore, the unique nanostructures of Sn(OH) 4 /MCMB ensure it becomes a novel promising anode material for the high‐performance lithium ion batteries.
Publisher: Springer Science and Business Media LLC
Date: 12-07-2017
Publisher: American Chemical Society (ACS)
Date: 10-01-2020
Abstract: The practical application of Li-S batteries is h ered because of their poor cycling stability caused by electrolyte-dissolved lithium polysulfides. Dual functionalities such as strong chemical adsorption stability and high conductivity are highly desired for an ideal host material for the sulfur-based cathode. Herein, a uniform polypyrrole layer-coated sulfur/graphene aerogel composite is designed and synthesized using a novel vapor-phase deposition method. The polypyrrole layer simultaneously acts as a host and an adsorbent for efficient suppression of polysulfide dissolution through strong chemical interaction. The density functional theory calculations reveal that the polypyrrole could trap lithium polysulfides through stronger bonding energy. In addition, the deflation of sulfur/graphene hydrogel during the vapor-phase deposition process enhances the contact of sulfur with matrices, resulting in high sulfur utilization and good rate capability. As a result, the synthesized polypyrrole-coated sulfur/graphene aerogel composite delivers specific discharge capacities of 1167 and 409.1 mA h g
Publisher: Trans Tech Publications, Ltd.
Date: 07-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.550-553.2121
Abstract: Graphene for its unique physical structure, excellent mechanical, electrical and physical properties has been widely applied in nanoelectronics, microelectronics, energy storage material, composite materials and so on. In recent years, many researchers found graphene have outstanding adsorption capacity of contaminants in aqueous solution due to its high specific surface area. This paper summarized the graphene, graphene oxide and functionalized graphene removing various heavy metals in waste water.
Publisher: Wiley
Date: 16-10-2018
Publisher: Trans Tech Publications, Ltd.
Date: 07-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.550-553.2129
Abstract: Cr(VI) has a highly toxic effect on the organism and has caused serious harm to the environment. Due to quantum size effects and interface coupling effects, mesoporous materials have novel physical, chemical and many other excellent performances, especially for the promising application in the adsorption of heavy metals. This article includes a survey of removal mesoporous materials for Cr(VI)-contaminated wastewater. It also presents the challenges and prospects in using the mesoporous adsorbents for Cr(VI) removal in wastewater treatment.
Publisher: American Chemical Society (ACS)
Date: 22-07-2019
Abstract: Solid materials with special atomic and electronic structures are deemed desirable platforms for establishing clear relationships between surface/interface structure characteristics and electrochemical activity. In this work, nickel boride (Ni
Publisher: American Chemical Society (ACS)
Date: 24-06-2019
Abstract: Due to the abundant potassium resource on the Earth's crust, researchers now have become interested in exploring high-performance potassium-ion batteries (KIBs). However, the large size of K
Publisher: American Scientific Publishers
Date: 06-2014
Abstract: In this study, hexadecyltrimethyl ammonium bromide and triblock poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) were used as co-templates and tetraethoxysilane was used as silica source to synthesize mesoporous MCM-48, which was employed to adsorb methyl violet dye from water. The prepared MCM-48, after calcination at 550 degrees C, was found to have a high surface area of 1072 m2/g and a pore volume of 1.08 cm3/g. The MCM-48 adsorption of methyl violet in aqueous solution was studied using UV-visible spectrophotometry. Experimental conditions, including initial pH of s le solution, initial concentration, MCM-48 amount, adsorption time and temperature, were also investigated. Results showed that the adsorption behavior could well be depicted by Langmuir equations and pseudo-second-order kinetic model. The maximum adsorption capacity of 193.82 mg/g was obtained at 20 degrees C. The values for thermodynamic parameters deltaG0, deltaS0 and deltaH0 were all negative, showing that the MCM-48 adsorption of methyl violet was spontaneous and exothermic.
Publisher: Wiley
Date: 10-10-2018
Abstract: Borohydride solid-state electrolytes with room-temperature ionic conductivity up to ≈70 mS cm
Publisher: Trans Tech Publications, Ltd.
Date: 07-10-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.356-360.349
Abstract: Due to their large surface areas, high pore volumes, relatively even distributions of pore sizes, surfaces enriched with unsaturated groups and orderly long-range structures, the mesoporous materials have been widely applied in industries such as chemical, biomedical, environmental protection and functional materials. In recent years, many scientists have demonstrated that the mesoporous molecular sieves have better adsorption of dyes in wastewater. This paper reviews the applications of different types of mesoporous adsorbents for removal of dyes in wastewater. It also presents the challenges and prospects in using the mesoporous materials for dye removal in wastewater treatment.
Publisher: Wiley
Date: 09-12-2021
Abstract: Aqueous zinc ion batteries (ZIBs) are regarded as one of the most ideally suited candidates for large‐scale energy storage applications owning to their obvious advantages, that is, low cost, high safety, high ionic conductivity, abundant raw material resources, and eco‐friendliness. Much effort has been devoted to the exploration of cathode materials design, cathode storage mechanisms, anode protection as well as failure mechanisms, while inadequate attentions are paid on the performance enhancement through modifying the electrolyte salts and additives. Herein, to fulfill a comprehensive aqueous ZIBs research database, a range of recently published electrolyte salts and additives research is reviewed and discussed. Furthermore, the remaining challenges and future directions of electrolytes in aqueous ZIBs are also suggested, which can provide insights to push ZIBs’ commercialization.
Publisher: Wiley
Date: 12-06-2019
Publisher: American Chemical Society (ACS)
Date: 14-06-2012
DOI: 10.1021/JE3003496
Publisher: Springer Science and Business Media LLC
Date: 11-09-2019
Publisher: Elsevier BV
Date: 03-2015
Publisher: American Chemical Society (ACS)
Date: 11-09-2019
Abstract: As an important class of multielectron reaction materials, the applications of transition-metal oxides (TMOs) are impeded by volume expansion and poor electrochemical activity. To address these intrinsic limitations, the renewal of TMOs inspires research on incorporating an advanced interface layer with multiple anionic characteristics, which may add functionality to support properties inaccessible to a single-anion TMO electrode. Herein, a transition-metal oxycarbide (TMOC, M = Mo) with more than one anionic species was prepared as an interface layer on a corresponding oxide. A multiple anionic TMOC possesses advantages of structural stability, abundant active sites, and elevated metal cation valence states. Such merits mitigate volume changes and enhance multielectron reactions significantly. The TMOC nanocomposite has a well-maintained capacity after 1000 cycles at 2 A·g
Publisher: MDPI AG
Date: 14-11-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA04255K
Abstract: A porous N and P dual doped graphene interlayer was fabricated for improved conductivity and polysulfide capture in Li–S batteries, supported by first-principles DFT calculations.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA00681C
Abstract: Natural bamboo, as a sustainable precursor, is used to prepare porous bamboo carbon fibers (BCFs) that are subsequently interwoven into a BCF membrane (BCFM) as a captor interlayer for the lithium polysulfide intermediates between the sulfur cathode and the separator in Li–S batteries.
Publisher: American Chemical Society (ACS)
Date: 30-03-2022
Publisher: Elsevier BV
Date: 12-2019
Publisher: Elsevier BV
Date: 06-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA05798A
Abstract: A top-down strategy is developed to prepare ultrathin Fe 2 O 3 nanoflakes (approximately 4 nm thick). The ultrathin nanoflakes showed a large specific capability, high rate performance and long lifetime as anode material for lithium ion batteries.
Publisher: MDPI AG
Date: 09-09-2022
Abstract: Owing to the sustainability, environmental friendliness, and structural ersity of biomass-derived materials, extensive efforts have been devoted to using them in high-energy rechargeable batteries. Alkali-metal–selenium batteries, one of the high-energy rechargeable batteries with a reasonable cost compared to up-to-date lithium-ion batteries, have also attracted significant attention. Therefore, a timely and comprehensive review of the biomass carbon structures/components to the mechanisms for enhancing alkali-metal–selenium batteries has been systematically introduced. In the end, advantages, challenges, and outlooks are pointed out for the future development of biomass-derived carbon materials in alkali-metal–selenium batteries. This review could help researchers think about using biomass carbon materials to improve battery performance and what other problems should be solved, thereby promoting the application of biomass materials in battery design.
Publisher: Springer Science and Business Media LLC
Date: 10-10-2018
Publisher: Wiley
Date: 2016
Publisher: American Chemical Society (ACS)
Date: 15-06-2016
Abstract: Low-cost, long-life, and high-performance lithium batteries not only provide an economically viable power source to electric vehicles and smart electricity grids but also address the issues of the energy shortage and environmental sustainability. Herein, low-cost, hierarchically porous, and nitrogen-doped loofah sponge carbon (N-LSC) derived from the loofah sponge has been synthesized via a simple calcining process and then applied as a multifunctional blocking layer for Li-S, Li-Se, and Li-I2 batteries. As a result of the ultrahigh specific area (2551.06 m(2) g(-1)), high porosity (1.75 cm(3) g(-1)), high conductivity (1170 S m(-1)), and heteroatoms doping of N-LSC, the resultant Li-S, Li-Se, and Li-I2 batteries with the N-LSC-900 membrane deliver outstanding electrochemical performance stability in all cases, i.e., high reversible capacities of 623.6 mA h g(-1) at 1675 mA g(-1) after 500 cycles, 350 mA h g(-1) at 1356 mA g(-1) after 1000 cycles, and 150 mA h g(-1) at 10550 mA g(-1) after 5000 cycles, respectively. The successful application to Li-S, Li-Se, and Li-I2 batteries suggests that loofa sponge carbon could play a vital role in modern rechargeable battery industries as a universal, cost-effective, environmentally friendly, and high-performance blocking layer.
Publisher: Bulletin of Chemical Reaction Engineering and Catalysis
Date: 21-09-2023
DOI: 10.9767/BCREC.19816
Publisher: MDPI AG
Date: 31-12-2022
Abstract: Although lithium metal anode has irreplaceable advantages, such as ultra-high specific energy density and ultra-low redox potential, a variety of issues, i.e., short cycle life, low Coulomb efficiency, and tendency to cause fire explosions caused by lithium dendrite growth and high reactivity to the electrolyte, seriously hinder the practical progress of lithium metal anode. This perspective summarizes how 3D lithiophilic materials have stabilized lithium metal anodes in recent years by improving the uneven deposition of lithium metal, alleviating the volume expansion of lithium metal anodes, and limiting dendrite growth. Simultaneously, the issues of the 3D composite lithium anodes in practical application are concluded and the research direction of 3D composite lithium anode is prospected.
Publisher: American Chemical Society (ACS)
Date: 26-10-2015
Abstract: Sulfur is an attractive cathode material in energy storage devices due to its high theoretical capacity of 1672 mAh g(-1). However, practical application of lithium-sulfur (Li-S) batteries can be achieved only when the major barriers, including the shuttling effect of polysulfides (Li2Sx, x = 3-8), significant volume change (∼80%), and the resultant rapid deterioration of electrodes, are tackled. Here, we propose an "inside-out" synthesis strategy by mimicking the structure of the pomegranate fruit to achieve conductive confinement of sulfur to address these issues. In the proposed pomegranate-like structure, sulfur and carbon nanotubes composite is encapsulated by the in situ formed amorphous carbon network, which allows the regeneration of electroactive material sulfur and the confinement of the sulfur as well as the lithium polysulfide within the electrical conductive carbon network. Consequently, a highly robust sulfur cathode is obtained, delivering remarkable performance in a Li-S battery. The obtained composite cathode shows a reversible capacity of 691 mAh g(-1) after 200 cycles with impressive cycle stability at the current density of 1600 mA g(-1).
Publisher: Wiley
Date: 28-11-2020
Abstract: Topological insulators have spurred worldwide interest, but their advantageous properties have scarcely been explored in terms of electrochemical energy storage, and their high‐rate capability and long‐term cycling stability still remain a significant challenge to harvest. p‐Type topological insulator SnSb 2 Te 4 nanodots anchoring on few‐layered graphene (SnSb 2 Te 4 /G) are synthesized as a stable anode for high‐rate lithium‐ion batteries and potassium‐ion batteries through a ball‐milling method. These SnSb 2 Te 4 /G composite electrodes show ultralong cycle lifespan (478 mAh g −1 at 1 A g −1 after 1000 cycles) and excellent rate capability (remaining 373 mAh g −1 even at 10 A g −1 ) in Li‐ion storage owing to the rapid ion transport accelerated by the PN heterojunction, virtual electron highways provided by the conductive topological surface state, and extraordinary pseudocapacitive contribution, whose excellent phase reversibility is confirmed by synchrotron in situ X‐ray powder diffraction. Surprisingly, durable lifespan even at practical levels of mass loading ( mg cm −2 ) for Li‐ion storage and excellent K‐ion storage performance are also observed. This work provides new insights for designing high‐rate electrode materials by boosting conductive topological surfaces, atomic doping, and the interface interaction.
Publisher: Elsevier BV
Date: 10-2017
Publisher: Wiley
Date: 13-12-2018
Abstract: Nitrate is a raw ingredient for the production of fertilizer, gunpowder, and explosives. Developing an alternative approach to activate the N≡N bond of naturally abundant nitrogen to form nitrate under ambient conditions will be of importance. Herein, pothole-rich WO
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8TA12537F
Abstract: Rechargeable metal batteries using selenium or selenide as the cathodes have attracted considerable attention during the past few years owing to selenium/selenide possessing a high volumetric energy density that is comparable to that of sulfur, a moderate output voltage and characteristics of environmental benignity.
Publisher: Wiley
Date: 11-08-2020
Abstract: Volume expansion and poor conductivity are two major obstacles that hinder the pursuit of the lithium‐ion batteries with long cycling life and high power density. Herein, we highlight a misfit compound PbNbS 3 with a soft/rigid superlattice structure, confirmed by scanning tunneling microscopy and electrochemical characterization, as a promising anode material for high performance lithium‐ion batteries with optimized capacity, stability, and conductivity. The soft PbS sublayers primarily react with lithium, endowing capacity and preventing decomposition of the superlattice structure, while the rigid NbS 2 sublayers support the skeleton and enhance the migration of electrons and lithium ions, as a result leading to a specific capacity of 710 mAh g −1 at 100 mA g −1 , which is 1.6 times of NbS 2 and 3.9 times of PbS. Our finding reveals the competitive strategy of soft/rigid structure in lithium‐ion batteries and broadens the horizons of single‐phase anode material design.
Publisher: American Chemical Society (ACS)
Date: 25-10-2023
Publisher: The Electrochemical Society
Date: 2018
DOI: 10.1149/2.0431816JES
Publisher: Springer Science and Business Media LLC
Date: 12-01-2021
Publisher: Wiley
Date: 17-09-2019
Abstract: The feasibility of transition metal carbides (TMCs) as promising high-rate electrodes is still hindered by low specific capacity and sluggish charge transfer kinetics. Improving charge transport kinetics motivates research toward directions that would rely on heterostructures. In particular, heterocomposing with carbon-rich TMCs is highly promising for enhancing Li storage. However, due to limited synthesis methods to prepare carbon-rich TMCs, understanding the interfacial interaction effect on the high-rate performance of TMCs is often neglected. In this work, a novel strategy is proposed to construct a binary carbide heteroelectrode, i.e. incorporating the carbon-rich TMC (M=Mo) with its metal-rich TMC nanowires (nws) via an ingenious in situ disproportionation reaction. Results show that the as-prepared MoC-Mo
Publisher: Elsevier BV
Date: 02-2023
Publisher: Springer Science and Business Media LLC
Date: 26-11-2022
Publisher: Wiley
Date: 19-05-2020
Publisher: Springer Science and Business Media LLC
Date: 20-04-2020
Publisher: Wiley
Date: 28-07-2019
Publisher: Elsevier BV
Date: 12-2016
Publisher: American Chemical Society (ACS)
Date: 31-08-2018
Publisher: The Electrochemical Society
Date: 05-05-2020
Publisher: Wiley
Date: 06-2016
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Xingxing Gu.