Jianan Gu

ORCID: 0000-0003-3914-5760
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About
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Research Areas
  • Advancements in Battery Materials
  • MXene and MAX Phase Materials
  • Advanced Battery Materials and Technologies
  • Catalytic Processes in Materials Science
  • Extraction and Separation Processes
  • Advanced Photocatalysis Techniques
  • 2D Materials and Applications
  • Electrocatalysts for Energy Conversion
  • Industrial Gas Emission Control
  • Recycling and Waste Management Techniques
  • Supercapacitor Materials and Fabrication
  • Graphene research and applications
  • Catalysis and Oxidation Reactions
  • Advanced Battery Technologies Research
  • Nanomaterials for catalytic reactions
  • Gas Sensing Nanomaterials and Sensors
  • Advanced battery technologies research
  • Ammonia Synthesis and Nitrogen Reduction
  • Fuel Cells and Related Materials
  • Semiconductor materials and devices
  • Environmental remediation with nanomaterials
  • Perovskite Materials and Applications
  • Advanced Memory and Neural Computing
  • Advancements in Solid Oxide Fuel Cells
  • Catalysis and Hydrodesulfurization Studies

North China Electric Power University
2023-2025

Shanghai Jiao Tong University
2020-2024

King Abdullah University of Science and Technology
2024

Beihang University
2016-2023

Academy of Military Medical Sciences
2023

Shanghai University of Traditional Chinese Medicine
2023

Northeast Forestry University
2023

Abstract Although lithium–sulfur (Li–S) batteries are one of the most promising energy storage devices owing to their high densities, sluggish reaction kinetics and severe shuttle effect sulfur cathodes hinder practical applications. Here, single atom zinc implanted MXene is introduced into a cathode, which can not only catalyze conversion reactions polysulfides by decreasing barriers from Li 2 S 4 /Li but also achieve strong interaction with due electronegativity atomic on MXene. Moreover,...

10.1002/adfm.202002471 article EN Advanced Functional Materials 2020-06-05

Abstract High‐entropy materials (HEMs) have great potential for energy storage and conversion due to their diverse compositions, unexpected physical chemical features. However, high‐entropy atomic layers with fully exposed active sites are difficult synthesize since phases easily segregated. Here, it is demonstrated that of transition‐metal carbide (HE‐MXene) can be produced via the selective etching novel MAX (also termed M n +1 AX ( = 1, 2, 3), where represents an early element, A element...

10.1002/adma.202101473 article EN Advanced Materials 2021-08-08

Single atom catalysts possess attractive electrocatalytic activities for various chemical reactions owing to their favorable geometric and electronic structures compared the bulk counterparts. Herein, we demonstrate an efficient approach producing single copper immobilized MXene CO2 reduction methanol via selective etching of hybrid A layers (Al Cu) in quaternary MAX phases (Ti3(Al1–xCux)C2) due different saturated vapor pressures Al- Cu-containing products. After Al layers, Cu atoms are...

10.1021/acsnano.0c09755 article EN ACS Nano 2021-02-22

Lithium (Li) metal has been considered as one of the most prospective anodes for Li-based batteries owing to its high theoretical gravimetric capacity (3860 mAh g-1) and low potential (-3.04 V vs standard hydrogen electrode (SHE)). Unfortunately, there commonly exist uncontrollable dendrites in lithium during repeated plating-stripping processes, causing short cycle life even circuiting batteries. Here, single zinc atoms immobilized on MXene (Ti3C2Clx) layers (Zn-MXene) were produced...

10.1021/acsnano.9b08141 article EN ACS Nano 2020-01-08

Metallic antimony (Sb) with gray allotrope has rarely been considered from the viewpoint of two‐dimension layered system is actually a graphite‐like material, in which Sb layers consist fused, ruffled, and six‐membered rings. Given that metallic nanosheets can be played like graphene, it would anticipated to obtain new anode material superior electrochemical performances for sodium storage. In this work, we propose an efficient strategy fabricate free‐standing via liquid‐phase exfoliation...

10.1002/aenm.201700447 article EN Advanced Energy Materials 2017-05-11

Abstract Although zinc metal anodes have some intrinsic advantages for aqueous ion batteries, the notorious dendrites hamper its practical applications. Herein, a charge‐enriched strategy through MXene‐based polypyrrole (MXene‐mPPy) layers is explored toward dendrite‐free Zn anode. The MXene‐mPPy composed of mesoporous PPy on both sides Ti 3 C 2 T x ‐MXene exhibit an exceptional charge enrichment ability (149 F g −1 , 5 mV s ), which beneficial not onlying terms accumulating levels, but also...

10.1002/aenm.202103979 article EN Advanced Energy Materials 2022-02-09

Abstract Zinc anodes are promising for zinc‐based batteries owing to the high theoretical capacity (820 mAh g −1 ), environmental‐friendliness, and good safety, but uncontrollable dendrites greatly hamper their practical applications. Here, a special nonmodulus liquid GaIn electrode is designed help understand failure mechanism of Zn anodes, demonstrating that there huge crystalline stress in plating anode causes fast growth substantial dendrites. To solve this issue, zinc‐enriched metal...

10.1002/aenm.202200115 article EN Advanced Energy Materials 2022-03-11

Abstract Converting spent lithium‐ion batteries (LIBs) cathode materials into environmental catalysts has drawn more and attention. Herein, we fabricated a Co 3 O 4 ‐based catalyst from LiCoO 2 LIBs (Co ‐LIBs) found that the role of Al Cu current collectors on its performance is nonnegligible. The density functional theory calculations confirmed doping and/or upshifts d‐band center Co. A Fenton‐like reaction based peroxymonosulfate (PMS) activation was adopted to evaluate activity....

10.1002/anie.202407870 article EN Angewandte Chemie International Edition 2024-05-15

Pyridinic nitrogen-enriched carbon nanogears (PNCG) are achieved via controllable synthesis of a well-defined polyimide and subsequent pyrolysis at tunable temperatures. The resultant PNCG possesses unique structural compositional characteristics, which significantly promote the fast transports both lithium electron. Consequently, optimal pyridinic exhibit very high reversible capacity long cycle life for storage. As service to our authors readers, this journal provides supporting...

10.1002/aenm.201600917 article EN Advanced Energy Materials 2016-06-30

Single‐atom sites on MXenes (SASs‐MXenes) have attracted widespread attention for energy storage and conversion due to their highest atom utilization efficiency, intriguing intrinsic properties, unusual performance, improved robustness. In addition, the large surface area abundant anchor make ideal substrates supporting single atoms via covalent interaction. Herein, main strategies synthesis of SASs‐MXenes are first summarized, which cover capturing by cation vacancies, coordinating with...

10.1002/smsc.202100017 article EN cc-by Small Science 2021-05-07

Abstract Lithium metal batteries (LMBs) are well recognized as potentially high‐energy systems to power portable electronics and electric vehicles. However, LMBs always undergo uncontrollable lithium deposition in metallic anodes due inhomogeneous ion flux, which causes limited output impedes their practical applications. Low‐tortuous arrays have been intensively investigated guide the fast transport of ions homogeneous growth lithium, thereby achieving high‐power LMBs. In this review,...

10.1002/aenm.202003663 article EN Advanced Energy Materials 2021-02-08

Abstract In past decades, high‐entropy (HE) materials, containing five or more elements with approximately equal atomic ratio, are extensively investigated due to their desirable properties in a series of applications. Recently, HE two‐dimensional (2D) materials have become promising which not only endow the advantages from bulk form but also exhibit unusual 2D features. So far, transition metal carbides (MXenes), dichalcogenides (TMDs), hydrotalcites (LDHs), and oxides been successfully...

10.1002/sus2.47 article EN cc-by SusMat 2022-02-01

Quantum sheets of transition-metal dichalcogenides (TMDs) are promising nanomaterials owing to the combination both 2D nanosheets and quantum dots with distinctive properties. However, usually possess semiconducting behavior associated 2H phase, it remains challenging produce 1T-phase due easy sliding basal plane susceptible small lateral sizes. Here, an efficient high-entropy strategy is developed disulfides based on controllable introduction multiple metal atoms large size differences...

10.1002/adma.202500321 article EN Advanced Materials 2025-02-21

Although transition metal dichalcogenides (TMDs) monolayers are widely applied in electronics, optics, catalysis, and energy storage, their yield or output is commonly very low (<1 wt % micrometer level) based on the well-known top-down (e.g., exfoliation) bottom-up chemical vapor deposition) approaches. Here, 1T MoS2 with a high fraction of ∼90% were achieved via conversion Mo-based MXenes (Mo2CTx Mo1.33CTx) at temperatures hydrogen sulfide gas, which Mo-layer could be transformed to Mo...

10.1021/acsnano.1c05268 article EN ACS Nano 2021-12-13

Abstract Metal anodes (lithium/sodium/zinc) are recognized as the most promising choice for rechargeable batteries due to their high theoretical capacity and low electrochemical redox potential. Unfortunately, metal face serious dendrite problems, hindering practical applications. Recent research has shown that dendrites can also be caused by levels of stress generated during deposition process. To address this issue, an alternative strategy based on relief is proposed inhibit growth...

10.1002/aenm.202302091 article EN Advanced Energy Materials 2023-09-15
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