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Iodine Promoted Ultralow Zn Nucleation Overpotential and Zn-Rich Cathode for Low-Cost, Fast-Production and High-Energy Density Anode-Free Zn-Iodine Batteries

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Nano-Micro Letters 2022年第12期14卷 373-386页

作者： Yixiang Zhang Lequan Wang Qingyun Li Bo Hu Junming Kang Yuhuan Meng zedong zhao Hongbin Lu State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan University2005 Songhu RoadShanghai 200438People’s Republic of China Yiwu Research Institute of Fudan University Chengbei RoadYiwu CityZhejiang 322000People’s Republic of China

The anode-free design is a promising strategy to increase the energy density of aqueous Zn metal batteries(AZMBs).However,the scarcity of Zn-rich cathodes and the rapid loss of limited Zn greatly hinder their commercial *** address these issues,a novel anode-free Zniodine battery(AFZIB)was designed via a simple,low-cost and scalable *** plays bifunctional roles in improving the AFZIB overall performance:enabling high-performance Zn-rich cathode and modulating Zn deposition *** the cathode side,the ZnI_(2) serves as Zn-rich cathode *** graphene/polyvinyl pyrrolidone heterostructure was employed as an efficient host for ZnI_(2) to enhance electron conductivity and suppress the shuttle effect of iodine *** the anode side,trace I_(3)^(−) additive in the electrolyte creates surface reconstruction on the commercial Cu *** in situ formed zincophilic Cu nanocluster allows ultralow-overpotential and uniform Zn deposition and superior reversibility(average coulombic efficiency>99.91% over 7,000 cycles).Based on such a configuration,AFZIB exhibits significantly increased energy density(162 Wh kg^(−1)) and durable cycle stability(63.8% capacity retention after 200 cycles)under practical application *** the low cost and simple preparation methods of the electrode materials,this work paves the way for the practical application of AZMBs.

关键词： Zn metal battery Zn deposition Zn-rich cathode Anode-free Energy density

A Bifunctional-Modulated Conformal Li/Mn-Rich Layered Cathode for Fast-Charging,High Volumetric Density and Durable Li-Ion Full Cells

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Nano-Micro Letters 2021年第8期13卷 40-55页

作者： zedong zhao Minqiang Sun Tianqi Wu Jiajia Zhang Peng Wang Long Zhang Chongyang Yang Chengxin Peng Hongbin Lu State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceCollaborative Innovation Center of Polymers and Polymer CompositesFudan University2005 Songhu RoadShanghai 200438People’s Republic of China School of Materials Science&Engineering University of Shanghai for Science and TechnologyShanghai 200093People’s Republic of China National Engineering Research Center for Supercapacitor for Vehicles Shanghai Aowei Technology Development Co.LtdShanghai 201203People’s Republic of China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071People’s Republic of China

Lithium-and manganese-rich(LMR)layered cathode materials hold the great promise in designing the next-generation high energy density lithium ion ***,due to the severe surface phase transformation and structure collapse,stabilizing LMR to suppress capacity fade has been a critical ***,a bifunctional strategy that integrates the advantages of surface modification and structural design is proposed to address the above issues.A model compound Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_(2)(MNC)with semi-hollow microsphere structure is synthesized,of which the surface is modified by surface-treated layer and graphene/car-bon nanotube dual *** unique structure design enabled high tap density(2.1 g cm^(−3))and bidirectional ion diffusion *** dual surface coatings covalent bonded with MNC via C-O-M linkage greatly improves charge transfer efficiency and mitigates electrode *** to the synergistic effect,the obtained MNC cathode is highly conformal with durable structure integrity,exhibiting high volumetric energy density(2234 Wh L^(−1))and predominant capacitive *** assembled full cell,with nanograph-ite as the anode,reveals an energy density of 526.5 Wh kg^(−1),good rate performance(70.3%retention at 20 C)and long cycle life(1000 cycles).The strategy presented in this work may shed light on designing other high-performance energy devices.

关键词： Lithium-and manganese-rich layered cathode Semi-hollow microspheres Volumetric energy density Conformal structure Full cell

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麦尔兹窑富氧煅烧的生产实践

山西冶金 2024年第4期47卷 162-164页

作者：李原野吴海东王洪军张学武赵泽东陈妍唐山钢铁集团有限责任公司河北唐山063606

以某钢厂麦尔兹石灰窑为研究对象,基于其工艺特点,从石灰产量、煤气消耗、石灰质量、废气排放等方面开展富氧煅烧生产实践。富氧煅烧可优化生产指标,加快煤气燃烧速率,提高火焰温度,增强窑内的辐射能力。实践结果表明:将富氧气体φ(O_(... 详细信息

以某钢厂麦尔兹石灰窑为研究对象,基于其工艺特点,从石灰产量、煤气消耗、石灰质量、废气排放等方面开展富氧煅烧生产实践。富氧煅烧可优化生产指标,加快煤气燃烧速率,提高火焰温度,增强窑内的辐射能力。实践结果表明:将富氧气体φ(O_(2))控制在29%左右可以取得最好的经济效益;富氧煅烧同传统助燃空气煅烧相比,可提高日产75 t,降低助燃空气量25%~35%,节约转炉煤气消耗35.92 m3/t,降低废气排放量19%。

关键词：麦尔兹窑富氧煅烧助燃空气石灰

Resilience-Oriented Load Restoration Method and Repair Strategies for Regional Integrated Electricity-Natural Gas System

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Energy Engineering 2024年第4期121卷 1091-1108页

作者： Keqiang Wang Pengyang zhao Changjian Wang Zimeng Zhang Yu Zhang Jia Lu zedong Yang Baicheng Power Supply Company State Grid Jilin Electric Power Co.Ltd.Baicheng137000China School of Electrical Engineering Northeast Electric Power UniversityJilin132012China

The rising frequency of extreme disaster events seriously threatens the safe and secure operation of the regional integrated electricity-natural gas system(RIENGS).With the growing level of coupling between electric and natural gas systems,it is critical to enhance the load restoration capability of both *** paper proposes a coordinated optimization strategy for resilience-enhanced RIENGS load restoration and repair scheduling and transforms it into a mixed integer second-order cone programming(MISOCP)*** proposed model considers the distribution network reconfiguration and the coordinated repair strategy between the two systems,minimizing the total system load loss cost and repair *** addition,a bi-directional gas flow model is used to describe the natural gas system,which can provide the RIENGS with more flexibility for load restoration during natural gas system ***,the effectiveness of the proposed approach is verified by conducting case studies on the test systems RIENGS E13-G7 and RIENGS E123-G20.

关键词： Resilience regional integrated electricity-natural gas system load restoration repair strategy

Alternately aligned 2D heterostructures enabled by dspacing accessible,highly periodic accordion-like graphene oxide frameworks

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Science China Materials 2021年第6期64卷 1457-1467页

作者： Yingbo Ruan zedong zhao Yuanhang Ge Bo Hu Mengxiong Li Lei Dong Jiajia Zhang Hongbin Lu State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan UniversityShanghai 200438China Xi’an Aerospace Composites Research Institute Xi’an 710025China

Two-dimensional(2D)heterostructures hold great promise in designing integrated materials,while the current synthesis strategies still confront challenges for multilayer heterostructure construction and scale-up *** we report a generalized host-guest strategy based on nonexfoliated layered graphene oxide(LGO)to construct graphene-based heterostructures that consist of multilayered,alternately aligned graphene and metal oxide *** 2D-aligned GOs and open interlayer spaces make LGO an ideal platform to create periodic 2D host *** oligomers covalently bond the adjacent *** extended chain conformation endows the resulting accordionlike GO frameworks with high structural stability,periodicity and enlarged interlayer *** to the high affinity of the open and well-arranged 2D channels toward guest precursors,a variety of high-quality heterostructures can be ***,a variety of exfoliated,ultrathin metal oxide nanosheets can also be prepared by removing the graphene *** flexible interlayer chemistry presented in this study paves a way toward the synthesis of a large family of graphene-inorganic/organic 2D heterostructures.

关键词： 2D heterostructures alternately aligned accordionlike graphene oxide frameworks d-spacing metal oxide nanosheets