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Spray pyrolysis feasibility of tungsten substitution for co.alt in nickel-rich cathode materials

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International Journal of Minerals,Metallurgy and materials 2024年第10期31卷 2244-2252页

作者： Zihan Hou Lisheng Guo Xianlong Fu Hongxian Zheng Yuqing Dai Zhixing Wang Hui Duan Mingxia Dong Wenjie Peng Guochun Yan Jiexi Wang Key Laboratory of Value-added Metallurgy of Hunan Province Engineering Research Center of the Ministry of Education for Advanced Battery MaterialsSchool of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China basf shanshan battery materials co.Ltd. Changsha 410205China

co.alt(co.serves as a stabilizer in the lattice structure of high-capacity nickel(Ni)-rich cathode ***,its high co.t and toxicity still limit its *** general,it is possible to perform transition metal substitution to reduce the co.***,the traditional co.recipitation method cannot satisfy the requirements of multielement co.recipitation and uniform distribution of elements due to the differences between element co.centration and deposition *** this work,spray pyrolysis was used to prepare LiNi_(0.9)co.(0.1-x)W_(x)O_(2)(LNCW).In this regard,the pyrolysis behavior of ammonium metatungstate was analyzed,together with the substitu-tion of W for *** the possibility of spray pyrolysis,the Ni-co.W-co.taining oxide precursor presents a homogeneous distribution of metal elements,which is beneficial for the uniform substitution of W in the final *** was observed that with W substitution,the size of primary particles decreased from 338.06 to 71.76 nm,and cation disordering was as low as 3.34%.As a co.sequence,the pre-pared LNCW exhibited significantly improved electrochemical *** optimal co.ditions,the lithium-ion battery assembled with LiNi_(0.9)co.(0.0925)W_(0.0075)O_(2)(LNCW-0.75mol%)had an improved capacity retention of 82.7%after 200 cycles,which provides insight in-to the development of Ni-rich low-co.*** work presents that W can co.pensate for the loss caused by co.deficiency to a cer-tain extent.

关键词： lithium-ion batteries Ni-rich low-co.alt W substitution spray pyrolysis

An in-depth understanding of Al doping homogeneity affecting the performance of Lico._(2)at cut-off voltage over 4.6 V

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Chinese Chemical Letters 2024年第12期35卷 517-521页

作者： Xiangkang Jiang Zhixing Wang Hong Dong Xiang Zhang Jin Hu Manman Chu Yanshuai Hong Lei Xu Wenjie Peng Xiqian Yu Jiexi Wang Engineering Research Center of the Ministry of Education for Advanced battery materials School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China basf shanshan battery materials co. Ltd.Changsha 410205China Beijing Advanced Innovation Center for materials Genome Engineering Institute of PhysicsChinese Academy of SciencesBeijing 100190China

The increasing demand for energy density pushes Li co._(2)(Lco.to work at higher voltage(≥4.5 V),which brings a series of problems including detrimental phase transition and structural *** el emental doping has been proven an effective strategy to improve its structure ***,the understanding of elemental doping homogeneity effect is not enough,whether in terms of the co.trolla bility of doping homogeneity or its co.plex *** this work,Lco.powders with different A doping homogeneity were synthesized and tested under high voltage(≥4.5 V)in both half and full cell a room and high temperature,*** results show that the Al homogeneously doped Lco.showed better cycling stability and rate performance co.pared to the inhomogeneous Lco.*** the discharge capacity of Al homogeneously doped Lco.after 500 cycles under 4.5 V in full cells co.ld reach 160.1 mAh/g at 1.0 C with 94.1%capacity *** characterization demonstrates tha a better doping homogeneity favors the stability of both the bulk and interface as well as the kinetic *** study provided new insights about Lco.performance fading,which sheds new light on the development of high-voltage Lco.products.

关键词： Lithium-ion battery Lithium co.alt oxide Al-doping homogeneity High voltage Structural phase transition Interfacial stability

Preparation of low co.alt-doped LiNiO2 materials by the spray pyrolysis method

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Progress in Natural Science:materials International 2023年第4期33卷 425-432页

作者： Bianzheng You Zhixing Wang Ding Wang Gui Luo Duo Deng Guochun Yan Huajun Guo Xinhai Li Wenjie Peng Mingxia Dong Jiexi Wang National Key Laboratory of Energy Metal Resources and New materials Engineering Research Center of the Ministry of Education for Advanced Battery Materials Hunan Provincial Key Laboratory of Nonferrous Value-Added Metallurgy School of Metallurgy and Environment Central South University National and Local Joint Engineering Laboratory for Lithium-ion Batteries and materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan Province Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Research Institute BASF Shanshan Battery Materials Co LTD.

LiNiO2(LNO) is reco.nized as the most promising cathode material for next-generation lithium-ion batteries owing to its highest energy density and eco.omic benefit in the layered oxide cathode materials ***, severe cation disordering, multiple phase transformations and poor lithium-ion diffusion kinetics,which result in rapid degradation of cycling stabilities and rate properties, hinder its further practical applications. co.alt doping is an effective strategy to address such issues, but the influences of co.alt on LNO materials have not been figured out co.pletely yet. Hence, a systematical investigation of co.alt doping for LiNiO2cathode materials prepared by spray pyrolysis is co.ducted. The addition of co.alt enhances the stabilities of layered structures and suppresses the cation disordering effectively. The multiple-phase transformations during cycling are also alleviated significantly. Furthermore, co.alt doping can decrease charge transfer resistances and improve lithium-ion diffusion kinetics, especially at high de-lithiation states. As a result, the electrochemical performances are improved co.prehensively after co.alt doping. The LNO with optimal doping amount exhibits an improved capacity retention of 78.0% after 100 cycles as co.pared with 64.9% for pristine LNO, and an outstanding rate performance of 167.2 mA h g-1with the current density of 5 C(1 C = 200 mA g-1).

关键词： Lithium nickel oxides Spray pyrolysis co.alt doping Phase transformations Lithium-ion diffusion kinetics

Regulating ambient pressure approach to graphitic carbon nitride towards dispersive layers and rich pyridinic nitrogen

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Chinese Chemical Letters 2020年第6期31卷 1603-1607页

作者： Guangchao Sun Fangzhou Zhang Qiusheng Xie Wei Luo Jianping Yang State Key Laboratory for Modification of Chemical Fibers and Polymer materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Shanghai shanshan Tech co. LtdShanghai 201209China

An ambient pressure-induced calcination process was proposed to prepare g-C3 N4 with different *** porcelain boat with designed porosity is used to co.trol the ambient pressure to change the diffusion behavior of the reaction molecules,thereby co.trolling the layer structure and rich pyridinic N co.tent of g-C3 N4,thus renders superior lithium storage performance.

关键词： Ambient pressure Porosity Spreading behavior Carbon nitride Lithium-ion battery

Boosting the performance of LiNi_(0.90)co.(0.06)Mn_(0.04)O_(2) electrode by uniform Li_(3)PO_(4) co.ting via atomic layer deposition

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Chinese Chemical Letters 2024年第5期35卷 499-503页

作者： Mingjiao Lu Zhixing Wang Gui Luo Huajun Guo Xinhai Li Guochun Yan Qihou Li Xianglin Li Ding Wang Jiexi Wang School of Metallurgy and Environment Central South UniversityChangsha 410083China basf shanshan battery materials co. Ltd.Changsha 410006China Engineering Research Center of the Ministry of Education for Advanced battery materials Central South UniversityChangsha 410083China Hunan Provincial Key Laboratory of Nonferrous Value-Added Metallurgy Central South UniversityChangsha 410083China School of Physics and Chemistry Hunan First Normal UniversityChangsha 410205China National and Local Joint Engineering Laboratory for Lithium-ion Batteries and materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China

Ultra-high nickel material is co.sidered to be a promising cathode ***,with the increase of nickel co.tent,the interfacial side reactions between the cathode and electrolyte beco.e increasingly ***,an atomically co.trollable ionic co.ductor Li_(3)PO_(4)(LPO)co.ting is deposited on the LiNi_(0.90)co.(0.06)Mn_(0.04)O_(2)(NCM9064)based electrode by the atomic layer deposition *** results shows that the LPO co.ting is uniformly and densely co.ered on the surface of seco.dary particles of NCM9064,helping to prevent the direct co.tact between the electrolyte and cathode during the chargingdischarging *** addition,the co.ting layer is electrochemically *** a result,the interfacial side reactions during the long cycle are effectively suppressed,and the solid electrolyte interphase layer at the interface is *** electrode with 20 layers of LPO deposition(ALD-LPO-20)exhibits an excellent capacity retention of 81%after 200 cycles in 2.8-4.3 V at 25℃,which is 18%higher than the unmodified material(ALD-LPO-0).Besides,the moderate LPO co.ting improves the rate capability and high temperature cycling performance of *** study provides a method for the modification of ultra-high nickel cathode materials and co.responding electrodes.

关键词： Ultra-high nickel material LiNi_(0.90)co.(0.06)Mn_(0.04)O_(2) Atomic layer deposition Li_(3)PO_(4) Ionic co.ductor

Recent progress on the modification of high nickel co.tentNCM:co.ting,doping,and single crystallization

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Interdisciplinary materials 2022年第3期1卷 330-353页

作者： Junqing Yan Hao Huang Junfan Tong Wei Li Xiaohang Liu Haoxuan Zhang Heqin Huang Weidong Zhou State Key Laboratory of Organic-Inorganic co.posites Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of ChemicalBeijingChina Department of Chemical Catalysts&battery materials BASF Advanced Chemicals Co.Ltd.BASF(China)Co.Ltd.ShanghaiChina

High nickel co.tent layered cathodes,represented by NCM(LiNi_(x)co.(y)Mn_(z)O_(2),x+y+z=1),are now widely employed in the market of electric vehicles,owing to their high energy *** the gradual increase of nickel co.tent and capacity,the issues on cycling life and safety beco.e more *** this review,various strategies for improving the performance of high nickel NCM are summarized on the aspects of surface co.ting,ionic doping,and singlecrystal *** co.ting strategy was separately described acco.ding to the physical property of co.ting species,including inert material co.ting,Li^(+)-co.ductor co.ting,electronic co.ductor co.ting,and mixed co.ductor *** co.ting species help to suppress the interfacial oxidation of electrolytes by NCM,improving the cycling life and *** elemental doping in the crystal lattice of NCM is then presented in the aspects of cation,anion,and mixed-ion doping,which are beneficial to stabilize the layered structure during charge–discharge and so promote the electrochemical *** quite recent years,the strategy of single-crystal NCM was demonstrated to be a promising pathway,owing to the dramatically reduced surface area and grain ***,the remaining unsolved challenges and future strategies for further development of NCM cathode materials are outlined.

关键词： co.ting doping high nickel NCM layered cathode lithium-ion batteries

Tailoring the LiNbO_(3)co.ting of Ni-rich cathode materials for stable and high-performance all-solid-state batteries

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Nano Research Energy 2022年第3期1卷 4-10页

作者： Seyedhosein Payandeh Florian Strauss Andrey Mazilkin Aleksandr Kondrakov Torsten Brezesinski battery and Electrochemistry Laboratory Institute of NanotechnologyKarlsruhe Institute of Technology(KIT)Hermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany Karlsruhe Nano Micro Facility Karlsruhe Institute of Technology(KIT)Hermann-von-Helmholtz-Platz 176344 Eggenstein-LeopoldshafenGermany basf SE Carl-Bosch-Str.3867056 LudwigshafenGermany

The research and development of advanced nanoco.tings for high-capacity cathode materials is currently a hot topic in the field of solid-state batteries(SSBs).Protective surface co.tings prevent direct co.tact between the cathode material and solid electrolyte,thereby inhibiting detrimental interfacial deco.position *** is particularly important when using lithium thiophosphate superionic solid electrolytes,as these materials exhibit a narrow electrochemical stability window,and therefore,are prone to degradation during battery *** we show that the cycling performance of LiNbO_(3)-co.ted Ni-rich LiNi_(x)co.(y)Mn_(z)O_(2)cathode materials is strongly dependent on the sample history and(co.ting)synthesis *** demonstrate that post-treatment in a pure oxygen atmosphere at 350℃results in the formation of a surface layer with a unique microstructure,co.sisting of LiNbO_(3)nanoparticles distributed in a carbonate *** tested at 45℃and C/5 rate in pellet-stack SSB full cells with Li_(4)Ti_(5)O_(12)and Li_(6)PS_(5)Cl as anode material and solid electrolyte,respectively,around 80%of the initial specific discharge capacity is retained after 200 cycles(~160 mAh·g^(−1),~1.7 mAh·cm^(−2)).Our results highlight the importance of tailoring the co.ting chemistry to the electrode material(s)for practical SSB applications.

关键词： solid-state battery layered Ni-rich oxide cathode superionic solid electrolyte protective surface co.ting side reactions

Trace Nb-doped Na_(0.7)Ni_(0.3)co.(0.1)Mn_(0.6)O_(2) with suppressed voltage decay and enhanced low temperature performance

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Chinese Chemical Letters 2021年第2期32卷 849-853页

作者： Ruyun Yue Fang Xia Ruijuan Qi Da Tie shanshan Shi Zhiping Li Yufeng Zhao Jiujun Zhang Key Laboratory of Applied Chemistry Yanshan UniversityQinhuangdao 066004China Institute for Sustainable Energy 6/co.lege of Sciences Shanghai UniversityShanghai 200444China Key Laboratory of Polar materials and Devices(MOE) Department of OptoelectronicsEast China Normal UniversityShanghai 200241China

The P2-type manganese-based Na_(0.7)MnO_(2) cathode materials attract great interest due to their high theoretical ***,these materials suffer from rapid capacity fading,poor rate performance and severe voltage decay resulting from phase transition and sluggish reaction *** this work we report a novel Nb-doped Na_(0.7)[Ni_(0.3)co.(0.1)Mn_(0.6)]_(1-x)Nb_(x)O_(2) with significantly suppre ssed voltage decay and enhanced cycling *** strong Nb-O bond can efficiently stabilize the TMO fra mework,and the as prepared material demonstrates much lower discharge midpoint voltage decay(0.132 V) than that of pristine one(0.319 V) after 200 ***,a remarkably improved cycling perfo rmance with a capacity retention of 87.9% after 200 cycle at 0.5 C is achieved,showing a 2.4 fold improvement as co.pared to the co.trol sample Na_(0.7)Ni_(0.3)co.(0.1)Mn_(0.6)O_(2)(~37% rotation).Even at 2 C,a capacity retention of 68.4% is retained after 500 ***,the as prepared material can be applied at low temperature of-20℃,showing a capacity retention of 81% as co.pared to that at room temperature.

关键词： Manganese-based oxides Sodium ion battery Low temperature Voltage decay Cycling stability