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Research on a TOPSIS energy efficiency evaluation system for crude oil gathering and transportation systems based on a GA-BP neural network

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Petroleum Science 2024年第1期21卷 621-640页

作者： xue-qiang zhang Qing-Lin Cheng Wei Sun Yi Zhao Zhi-Min Li Key Lab of Ministry of Education for Enhancing the Oil and Gas Recovery Ratio Northeast Petroleum UniversityDaqing163318HeilongjiangChina China Petroleum Pipeline Material and Equipment Co. LtdLangfang065000HebeiChina Research Institute of Petroleum Engineering and Technology Sinopec Northwest Oilfield CompanyUrumqi830011XinjiangChina

As the main link of ground engineering,crude oil gathering and transportation systems require huge energy consumption and complex *** is necessary to establish an energy efficiency evaluation system for crude oil gathering and transportation systems and identify the energy efficiency *** this paper,the energy efficiency evaluation system of the crude oil gathering and transportation system in an oilfield in western China is *** with the big data analysis method,the GA-BP neural network is used to establish the energy efficiency index prediction model for crude oil gathering and transportation *** comprehensive energy consumption,gas consumption,power consumption,energy utilization rate,heat utilization rate,and power utilization rate of crude oil gathering and transportation systems are *** the efficiency and unit consumption index of the crude oil gathering and transportation system,the energy efficiency evaluation system of the crude oil gathering and transportation system is established based on a game theory combined weighting method and TOPSIS evaluation method,and the subjective weight is determined by the triangular fuzzy analytic hierarchy *** entropy weight method determines the objective weight,and the combined weight of game theory combines subjectivity with objectivity to comprehensively evaluate the comprehensive energy efficiency of crude oil gathering and transportation systems and their ***,the weak links in energy utilization are identified,and energy conservation and consumption reduction are *** above research provides technical support for the green,efficient and intelligent development of crude oil gathering and transportation systems.

关键词： Crude oil gathering and transportation system GA-BP neural network Energy efficiency evaluation TOPSIS evaluation method Energy saving and consumption reduction

Regulation of carbon distribution to construct high-sulfur-content cathode in lithium-sulfur batteries

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Journal of Energy Chemistry 2021年第5期30卷 203-208页

作者： Meng Zhao Yan-Qi Peng Bo-Quan Li xue-qiang zhang Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Lithium-sulfur(Li-S)battery is regarded as one of the most promising next-generation energy storage systems due to the ultra-high theoretical energy density of 2600 Wh kg^(-1).To address the insulation nature of sulfur,nanocarbon composition is essential to afford acceptable cycling capacity but inevitably sacrifices the actual energy density under working ***,rational structural design of the carbon/sulfur composite cathode is of great significance to realize satisfactory electrochemical performances with limited carbon ***,the cathode carbon distribution is rationally regulated to construct high-sulfur-content and high-performance Li-S ***,a double-layer carbon(DLC)cathode is prepared by fabricating a surface carbon layer on the carbon/sulfur *** surface carbon layer not only provides more electrochemically active surfaces,but also blocks the polysulfide ***,the DLC configuration with an increased sulfur content by nearly 10 wt%renders an initial areal capacity of 3.40 mAh cm^(-2) and capacity retention of 83.8%during 50 cycles,which is about two times than that of the low-sulfur-content *** strategy of carbon distribution regulation affords an effective pathway to construct advanced high-sulfur-content cathodes for practical high-energy-density Li-S batteries.

关键词： Lithium-sulfur batteries High sulfur content High areal loading Double-layer carbon High energy density

Protecting lithium metal anodes in lithium-sulfur batteries:A review

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Energy Material Advances 2023年第1期4卷 34-56页

作者： Chen-Xi Bi Li-Peng Hou Zheng Li Meng Zhao xue-qiang zhang Bo-Quan Li qiang zhang Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Lithium-sulfur(Li-S)batteries are considered as one of the most promising next-generation energy storage devices because of their ultrahigh theoretical energy density beyond lithium-ion *** cycling stability of Li metal anode largely determines the prospect of practical applications of Li-S *** review systematically summarizes the current advances of Li anode protection in Li-S batteries regarding both fundamental understanding and regulation ***,the main challenges of Li metal anode instability are introduced with emphasis on the influence from lithium ***,a timeline with 4 stages is presented to afford an overview of the developing history of this *** that,3 Li anode protection strategies are discussed in detail in aspects of guiding uniform Li plating/stripping,reducing polysulfide concentration in anolyte,and reducing polysulfide reaction activity with Li ***,3 viewpoints are proposed to inspire future research and development of advanced Li metal anode for practical Li-S batteries.

关键词： field lithium sulfur

A Mixed Ether Electrolyte for Lithium Metal Anode Protection in Working Lithium-Sulfur Batteries

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Energy & Environmental Materials 2020年第2期3卷 160-165页

作者： Wei-Jing Chen Chang-Xin Zhao Bo-Quan Li Qi Jin xue-qiang zhang Tong-Qi Yuan Xitian zhang Zhehui Jin Stefan Kaskel qiang zhang Beijing Advanced Innovation Center for Tree Breeding by Molecular Design Beijing Forestry UniversityBeijing 100083China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025HeilongjiangChina School of Mining and Petroleum Engineering Department of Civil and Environmental EngineeringUniversity of AlbertaEdmonton AB T6G 1H9Canada Department of Inorganic Chemistry Dresden University of TechnologyBergstrasse 66Dresden 01069Germany Fraunhofer Institute for Material and Beam Technology Winterbergstrafie 28Dresden 01277Germany

Lithium-sulfur(Li-S) battery is considered as a promising energy storage system to realize high energy ***,unstable lithium metal anode emerges as the bottleneck toward practical applications,especially with limited anode excess required in a working full *** this contribution,a mixed diisopropyl ether-based(mixed-DIPE) electrolyte was proposed to effectively protect lithium metal anode in Li-S batteries with sulfurized polyacrylonitrile(SPAN) *** mixed-DIPE electrolyte improves the compatibility to lithium metal and suppresses the dissolution of lithium polysulfides,rendering significantly improved cycling ***,Li | Cu half-cells with the mixed-DIPE electrolyte cycled stably for 120 cycles,which is nearly five times longer than that with routine carbonate-based ***,the mixedDIPE electrolyte contributed to a doubled life span of 156 cycles at 0.5 C in Li | SPAN full cells with ultrathin 50 μm Li metal anodes compared with the routine *** contribution affords an effective electrolyte formula for Li metal anode protection and is expected to propel the practical applications of high-energy-density Li-S batteries.

关键词： full cells lithium anode protection lithium-sulfur batteries mixed diisopropyl ether-based electrolyte sulfurized polyacrylonitrile cathode

Nanotube-based heterostructures for electrochemistry: A mini-review on lithium storage, hydrogen evolution and beyond

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Journal of Energy Chemistry 2022年第7期31卷 630-642,I0016页

作者： Yongjia Zheng Wanyu Dai xue-qiang zhang Jia-Qi Huang Shigeo Maruyama Hong Yuan Rong Xiang Department of Mechanical Engineering The University of TokyoTokyo 113-8656Japan Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina

Nanotube-based mixed-dimensional or one-dimensional heterostructures have attracted great attention recently because of their unique physical properties and therefore potential for novel devices. Their chemical properties, however, were less explored but can be utilized for energy storage and *** this review, we summarize the recent progress of nanotube-based low dimensional materials for electrochemistry, in particular, lithium storage and hydrogen evolution. First, we describe the atomic structure of low-dimensional heterostructures and briefly touch previous work on planar van der Waals heterostructures(2D+2D) in electrochemistry applications. Then we focus this review on the more recently developed nanotube-based, i.e., 1D+2D and 1D + 1D heterostructures, and discuss their various preparation approaches and electrochemical performances. Finally, we outline the challenges and opportunities in this direction and particularly emphasize the possibility of building high-performance electrodes using a single-walled carbon nanotube-based ultra-thin 1D heterostructure, and the importance of understanding the fundamental mechanism at atomic precision.

关键词： Lithium storage Hydrogen evolution Electrochemistry Van der Waals heterostructures Carbon nanotube

A compact inorganic layer for robust anode protection in lithium-sulfur batteries

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InfoMat 2020年第2期2卷 379-388页

作者： Yu-Xing Yao xue-qiang zhang Bo-Quan Li Chong Yan Peng-Yu Chen Jia-Qi Huang qiang zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijingChina Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijingChina

Lithium-sulfur(Li-S)batteries are one of the most promising candidates for high energy density rechargeable batteries beyond current Li-ion ***,severe corrosion of Li metal anode and low Coulombic efficiency(CE)induced by the unremitting shuttle of Li polysulfides immensely hinder the practical applications of Li-S ***,a compact inorganic layer(CIL)formed by ex situ reactions between Li anode and ionic liquid emerged as an effective strategy to block Li polysulfides and suppress shuttle effect.A CE of 96.7%was achieved in Li-S batteries with CIL protected Li anode in contrast to 82.4%for bare Li anode while no lithium nitrate was ***,the corrosion of Li during cycling was effectively *** applied to working batteries,80.6%of the initial capacity after 100 cycles was retained in Li-S batteries with CIL-protected ultrathin(33μm)Li anode compared with 58.5%for bare Li anode,further demonstrating the potential of this strategy for practical *** study presents a feasible interfacial regulation strategy to protect Li anode with the presence of Li polysulfides and opens avenues for Li anode protection in Li-S batteries under practical conditions.

关键词： electrochemical energy storage lithium metal anode lithium-sulfur batteries rechargeable battery solid electrolyte interphase

Regulating the electrolyte solvation structure by weakening the solvating power of solvents for stable lithium metal batteries

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Science China Chemistry 2023年第12期66卷 3620-3627页

作者： Jia-Lin Liang Shu-Yu Sun Nan Yao Zhao Zheng Qian-Kui zhang Bo-Quan Li xue-qiang zhang Jia-Qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Department of Chemical Engineering Tsinghua UniversityBeijing 100081China

Rational electrolyte design is essential for stabilizing high-energy-density lithium(Li)metal batteries but is plagued by poor understanding on the effect of electrolyte component properties on solvation structure and interfacial ***,regulating the solvation structure in localized high-concentration electrolytes(LHCE)by weakening the solvating power of solvents is proposed for high-performance LHCE.1,3-dimethoxypropane(DMP)solvent has relatively weak solvating power but maintains the high solubility of Li salts,thus impelling the formation of nanometric aggregates where an anion coordinates to more than two Li-ions(referred to AGG-n)in *** decomposition of AGG-n increases the Li F content in solid electrolyte interphase(SEI),further enabling uniform Li *** cycle life of Li metal batteries with DMP-based LHCE is 2.1 times(386 cycles)as that of advanced ether-based LHCE under demanding ***,a Li metal pouch cell of 462Wh kg^(-1)undergoes 58 cycles with the DMP-based LHCE *** work inspires ingenious solvating power regulation to design high-performance electrolytes for practical Li metal batteries.

关键词： lithium metal anodes solvation structure 1,3-dimethoxypropane nanometric aggregates pouch cells

A generalizable, data-driven online approach to forecast capacity degradation trajectory of lithium batteries

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Journal of Energy Chemistry 2022年第5期31卷 548-555页

作者： Xinyan Liu xue-qiang zhang Xiang Chen Gao-Long Zhu Chong Yan Jia-Qi Huang Hong-Jie Peng Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China

Estimating battery degradation is vital not only to monitor battery’s state-of-health but also to accelerate research on new battery chemistries. Herein, we present a data-driven approach to forecast the capacity fading trajectory of lab-assembled lithium batteries. Features with physical meanings in addition to predictive abilities are extracted from discharge voltage curves, enabling online prediction for a single cell with only its historical data. The robustness and generalizability allow for the demonstration on a compromised quality dataset consisting of batteries varying in battery architectures and cycling conditions,with superior accuracy for end of life and degradation trajectory prediction with average errors of 8.2%and 2.8%, respectively. Apart from the impressive prediction accuracy, the as-extracted features also provide physical insights, the incorporation of which into material design or battery operation conditions further enlightens the development of better batteries. We highlight the effectiveness of time-seriesbased techniques in forecasting battery cycling performance, as well as the huge potential of datadriven methods in unveiling hidden correlations in complicated energy chemistries such as lithium metal batteries.

关键词： Battery prognosis Machine learning Time series forecasting Online prediction Lithium metal batteries

High-performance localized high-concentration electrolytes by diluent design for long-cycling lithium metal batteries

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Chinese Chemical Letters 2024年第4期35卷 244-247页

作者： Zhe Wang Li-Peng Hou Qian-Kui zhang Nan Yao Aibing Chen Jia-Qi Huang xue-qiang zhang College of Chemical and Pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuang 050018China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China

Electrolyte design is essential for stabilizing lithium metal anodes and localized high-concentration electrolyte(LHCE) is a promising one. However, the state-of-the-art LHCE remains insufficient to ensure long-cycling lithium metal anodes. Herein, regulating the solvation structure of lithium ions in LHCE by weakening the solvating power of diluents is proposed for improving LHCE performance. A diluent,1,1,2,2,3,3,4,4-octafluoro-5-(1,1,2,2-tetrafluoroethoxy) pentane(OFE), with weaker solvating power is introduced to increase the proportion of aggregates(an anion interacts with more than two lithium ions,AGG-n) in electrolyte compared with the commonly used 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether(TTE). The decomposition of AGG-n in OFE-based LHCE intensifies the formation of anion-derived solid electrolyte interphase and improves the uniformity of lithium deposition. Lithium metal batteries with OFE-based LHCE deliver a superior lifespan of 190 cycles compared with 90 cycles of TTE-based LHCE under demanding conditions. Furthermore, a pouch cell with OFE-based LHCE delivers a specific energy of 417 Wh/kg and undergoes 49 cycles. This work provides guidance for designing high-performance electrolytes for lithium metal batteries.

关键词： Lithium metal anodes Electrolyte Diluents Solid electrolyte interphase Pouch cells