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期刊信息/Journal information
能源化学
能源化学

包信和 ALEXIS T.BELL

双月刊

2095-4956

jngc@dicp.ac.cn

0411-84379237

116023

大连市中山路457号

能源化学/Journal Journal of Energy ChemistryCSCDCSTPCD北大核心EISCI
查看更多>>本刊旨在报道世界范围内天然气化学及其相关领域的最新发展动态和科技信息，增进国际交流，促进科技发展。以天然气及其相关领域从事化学和化学工程方面研究的科研人员及工程技术人员、大专院校的本科生、研究生和教师等为读者对象。
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    Deep neural network-enabled battery open-circuit voltage estimation based on partial charging data

    Ziyou ZhouYonggang LiuChengming ZhangWeixiang Shen...
    120-132页
    查看更多>>摘要：Battery management systems(BMSs)play a vital role in ensuring efficient and reliable operations of lithium-ion batteries.The main function of the BMSs is to estimate battery states and diagnose battery health using battery open-circuit voltage(OCV).However,acquiring the complete OCV data online can be a challenging endeavor due to the time-consuming measurement process or the need for specific oper-ating conditions required by OCV estimation models.In addressing these concerns,this study introduces a deep neural network-combined framework for accurate and robust OCV estimation,utilizing partial daily charging data.We incorporate a generative deep learning model to extract aging-related features from data and generate high-fidelity OCV curves.Correlation analysis is employed to identify the optimal partial charging data,optimizing the OCV estimation precision while preserving exceptional flexibility.The validation results,using data from nickel-cobalt-magnesium(NCM)batteries,illustrate the accurate estimation of the complete OCV-capacity curve,with an average root mean square errors(RMSE)of less than 3 mAh.Achieving this level of precision for OCV estimation requires only around 50 s collection of partial charging data.Further validations on diverse battery types operating under various conditions confirm the effectiveness of our proposed method.Additional cases of precise health diagnosis based on OCV highlight the significance of conducting online OCV estimation.Our method provides a flexible approach to achieve complete OCV estimation and holds promise for generalization to other tasks in BMSs.
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    High energy density in ultra-thick and flexible electrodes enabled by designed conductive agent/binder composite

    Xiaoyu ShenHailong YuLiubin BenWenwu Zhao...
    133-143页
    查看更多>>摘要：Thick electrodes can increase incorporation of active electrode materials by diminishing the proportion of inactive constituents,improving the overall energy density of batteries.However,thick electrodes fabri-cated using the conventional slurry casting approach frequently exhibit an exacerbated accumulation of carbon additives and binders on their surfaces,invariably leading to compromised electrochemical properties.In this study,we introduce a designed conductive agent/binder composite synthesized from carbon nanotube and polytetrafluoroethylene.This agent/binder composite facilitates production of dry-process-prepared ultra-thick electrodes endowed with a three-dimensional and uniformly distributed percolative architecture,ensuring superior electronic conductivity and remarkable mechan-ical resilience.Using this approach,ultra-thick LiCoO2(LCO)electrodes demonstrated superior cycling performance and rate capabilities,registering an impressive loading capacity of up to 101.4 mg/cm2,signifying a 242％increase in battery energy density.In another analytical endeavor,time-of-flight secondary ion mass spectroscopy was used to clarify the distribution of cathode electrolyte interphase(CEI)in cycled LCO electrodes.The results provide unprecedented evidence explaining the intricate correlation between CEI generation and carbon distribution,highlighting the intrinsic advantages of the proposed dry-process approach in fine-tuning the CEI,with excellent cycling performance in batteries equipped with ultra-thick electrodes.
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    Introducing hydroxyl groups to tailor the d-band center of Ir atom through side anchoring for boosted ORR and HER

    Qing LvMeiping LiXiaodong LiXingru Yan...
    144-151页
    查看更多>>摘要：Tuning the coordination atoms of central metal is an effective means to improve the electrocatalytic activity of atomic catalysts.Herein,iridium(Ir)is proposed to be asymmetrically anchored by sp-N and pyridinic N of hydrogen-substituted graphdiyne(HsGDY),and coordinated with OH as an Ir atomic catalyst(Ir1-N-HsGDY).The electron structures,especially the d-band center of Ir atom,are optimized by these specific coordination atoms.Thus,the as-synthesized Ir1-N-HsGDY exhibits excellent electrocat-alytic performances for oxygen reduction and hydrogen evolution reactions in both acidic and alkaline media.Benefiting from the unique structure of HsGDY,IrN2(OH)3 has been developed and demonstrated to act as the active site in these electrochemical reactions.All those indicate the fresh role of the sp-N in graphdiyne in producing a new anchor way and contributing to promote the electrocatalytic activity,showing a new strategy to design novel electrochemical catalysts.
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    Enhanced energy density and fast-charging ability via directional particle configuration

    Xiongwei WuShanguang lvJiabao LiXingrong Yin...
    152-164页
    查看更多>>摘要：The limited energy density of lithium-ion capacitors poses a significant obstacle to their widespread application,primarily stemming from the inability of the electrodes to simultaneously fulfill both high energy density and rapid charging requirements.Experimental data demonstrate that a directional par-ticle configuration can enhance charging speed while maintaining high-capacity density,but it is rarely discussed.Here,we have developed a particle-level electrochemical model capable of reconstructing an electrode with a directional particle configuration.By employing this method,an investigation was con-ducted to explore how the spatial morphology characteristics of particle configuration impact the energy storage characteristics of electrodes.Results demonstrate that rational particle configuration can effec-tively enhance the transport of lithium ions and create additional space for lithium-ion storage.With the same particle size distribution,the best electrode can increase the discharge capacity by up to 132.4％and increase the charging SOC by 11.3％compared to the ordinary electrode under the condition of 6 C.These findings provide a further understanding of the energy storage mechanism inside the ani-sotropic particle distribution electrode,which is important for developing high-performance lithium-ion capacitors.
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    Interface optimization and defects suppression via NaF introduction enable efficient flexible Sb2Se3 thin-film solar cells

    Mingdong ChenMuhammad IshaqDonglou RenHongli Ma...
    165-175页
    查看更多>>摘要：Sb2Se3 with unique one-dimensional(1D)crystal structure exhibits exceptional deformation tolerance,demonstrating great application potential in flexible devices.However,the power conversion efficiency(PCE)of flexible Sb2Se3 photovoltaic devices is temporarily limited by the complicated intrinsic defects and the undesirable contact interfaces.Herein,a high-quality Sb2Se3 absorber layer with large crystal grains and benign[hk1]growth orientation can be first prepared on a Mo foil substrate.Then NaF inter-mediate layer is introduced between Mo and Sb2Se3,which can further optimize the growth of Sb2Se3 thin film.Moreover,positive Na ion diffusion enables it to dramatically lower barrier height at the back contact interface and passivate harmful defects at both bulk and heterojunction.As a result,the cham-pion substrate structured Mo-foil/Mo/NaF/Sb2Se3/CdS/ITO/Ag flexible thin-film solar cell delivers an obviously higher efficiency of 8.03％and a record open-circuit voltage(Voc)of 0.492 V.This flexible Sb2Se3 device also exhibits excellent stability and flexibility to stand large bending radius and multiple bending times,as well as superior weak light photo-response with derived efficiency of 12.60％.This work presents an effective strategy to enhance the flexible Sb2Se3 device performance and expand its potential photovoltaic applications.
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    Thin paints for durable and scalable radiative cooling

    Shanquan LiuFei ZhangXingyu ChenHongjie Yan...
    176-182页
    查看更多>>摘要：Passive daytime radiative cooling(PDRC)is environment-friendly without energy input by enhancing the coating's solar reflectance(Rsolar)and thermal emittance(eLwIR)in the atmosphere's long-wave infrared transmission window.However,high Rsolar is usually achieved by increasing the coating's thickness,which not only increases materials'cost but also impairs heat transfer.Additionally,the desired high Rsolar is vulnerable to dust pollution in the outdoors.In this work,a thin paint was designed by mixing hBN plates,PFOTS,and IPA.Rsolar=0.963 andeLwIR=0.927 was achieved at a thickness of 150 μm due to the high backscattering ability of scatters.A high through-plane thermal conductivity(～1.82 W m-1 K-1)also can be obtained.In addition,the porous structure coupled with the binder PFOTS resulted in a contact angle of 154°,demonstrating excellent durability under dust contamination.Outdoor experiments showed that the thin paint can obtain a 2.3 ℃ lower temperature for sub-ambient cooling than the reference PDRC coating in the daytime.Furtherly,the above-ambient heat dissipation performance can be enhanced by spraying the thin paint on a 3D heat sink,which was 15.7 ℃ lower than the reference 1D structure,demonstrating excellent performance for durable and scalable PDRC applications.
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    1.42-fold enhancement of formate selectivity by linker conversion on the Zn-based metal organic framework catalyst

    Yayu GuanYuyu LiuFanghua NingJin Yi...
    183-190页
    查看更多>>摘要：Electro-reduction of carbon dioxide(ERCO2)is considered an effective method to alleviate the green-house effect and produce value-added chemicals.Achieving the dominant selectivity of Zn-based cata-lysts for formate remains a challenge.In this article,the Znln-E12 catalyst is successfully prepared by solvent assisted ligand exchange(SALE)method to convert organic ligands,achieving a Faradaic effi-ciency of 72.28％for formate at-1.26 V vs.RHE(VRHE),which is 1.42 times higher than the original cat-alyst.Evidence shows that the successful conversion of organic ligands can transform the catalyst from the original large size polyhedron to cross-linked network of particles with a diameter of about 30 nm.The increased specific surface area can expose more active sites and facilitate the electrocatalytic conver-sion of CO2 to formate.This work is expected to provide inspiration for the regulation of formate selec-tivity and catalyst size in Zn-based catalysts.
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    Machine learning in metal-ion battery research:Advancing material prediction,characterization,and status evaluation

    Tong YuChunyang WangHuicong YangFeng Li...
    191-204页
    查看更多>>摘要：Metal-ion batteries(MIBs),including alkali metal-ion(Li+,Na+,and K+),multi-valent metal-ion(Zn2+,Mg2+,and Al3+),metal-air,and metal-sulfur batteries,play an indispensable role in electrochemical energy storage.However,the performance of MIBs is significantly influenced by numerous variables,resulting in multi-dimensional and long-term challenges in the field of battery research and performance enhancement.Machine learning(ML),with its capability to solve intricate tasks and perform robust data processing,is now catalyzing a revolutionary transformation in the development of MIB materials and devices.In this review,we summarize the utilization of ML algorithms that have expedited research on MIBs over the past five years.We present an extensive overview of existing algorithms,elucidating their details,advantages,and limitations in various applications,which encompass electrode screening,material property prediction,electrolyte formulation design,electrode material characterization,manu-facturing parameter optimization,and real-time battery status monitoring.Finally,we propose potential solutions and future directions for the application of ML in advancing MIB development.
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    Insight into demand-driven preparation of single-atomic mediators for lithium-sulfur batteries

    Miaoyu LuYifan DingZaikun XueZiang Chen...
    205-219页
    查看更多>>摘要：Lithium-sulfur(Li-S)batteries have attracted considerable attention as one of the most appealing energy storage systems.Strenuous efforts have been devoted to tackling the tremendous challenges,mainly per-taining to the severe shuttle effect,sluggish redox kinetics and lithium dendritic growth.Single-atomic mediators as promising candidates exhibit impressive performance in addressing these intractable issues.Related research often utilizes a trial-and-error approach,proposing solutions to fabricate single-atomic materials with diversified features.However,comprehensive review articles especially tar-geting demand-driven preparation are still in a nascent stage.Inspired by these considerations,this review summarizes the design of single-atomic mediators based on the application case-studies in Li-S batteries and other metal-sulfur systems.Emerging preparation routes represented by chemical vapor deposition technology are introduced in a demand-oriented classification.Finally,future research direc-tions are proposed to foster the advancement of single-atomic mediators in Li-S realm.
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    Recent progress and future research directions for electrochromic zinc-ion batteries

    Tae Gwang YunByungil HwangJun Young Cheong
    220-232页
    查看更多>>摘要：In recent times,future energy storage systems demand a multitude of functionalities beyond their tradi-tional energy storage capabilities.In line with this technological shift,there is active research and devel-opment of electrochromic-energy storage systems designed to visualize electrochemical charging and discharging processes.The conventional electrochromic-energy storage devices primarily integrated supercapacitors,known for their high power density,to enable rapid color contrast.However,the low energy density of supercapacitors restricts overall energy storage capacity,acting as a significant barrier to expanding the application range of such systems.In this review,we introduce electrochromic zinc(Zn)-ion battery systems,which effectively overcome the limitation of low energy density,and provide illustrative examples of their applicability across diverse fields.Although many recent research works are present for electrochromic Zn-ion batteries,little review has so far taken place.Our objective is to dis-cuss on the current progress and future directions for electrochromic Zn-ion batteries,which are appli-cable for wearable electronics applications and energy storage systems.This review provides an initial milestone for future researchers in electrochromic energy storage and zinc-ion batteries,which will lead to a stream of future works related to them.
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