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您的检索式：作者名="LEI Zhanwu"
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| 1 | Deciphering pitting behavior of lithium metal anodes in lithium sulfur batteries显示文摘Unambiguous understanding in lithium anode failure mechanism calls for a comprehensive methodology to investigate the coupled morphological,electrochemical and mechanical behaviors during the stripping process.In this work,a mechanistic investigation of the pitting behavior of lithium metal in an electrolyte containing lithium polysulfides in lithium sulfur batteries was developed.It is found that lithium polysulfides could aggravate the nonuniform stripping of lithium electrodes. | Fanyang Huang Shuai Wang Yulin Jie Evan Hansen Shiyang Wang Zhanwu Lei Jian Liu Ruiguo Cao Genqiang Zhang Shuhong Jiao | 2020 | Journal of Energy Chemistry2020，29，10： | 1 |
| 2 | Tuning electrochemical transformation process of zeolitic imidazolate framework for efficient water oxidation activity显示文摘Metal-organic frameworks(MOFs)have been widely studied as efficient electrocatalysts for water oxidation due to their tunable structure and easy preparation.However,the rational design of MOFs-based electrocatalysts and fundamental understanding of their structural evolution during oxygen evolution reaction(OER)remain critical challenges.Here,we report a facile approach to tune the structural transformation process of the Co-based zeolitic imidazolate framework(ZIF)during the OER process by using water molecules as a vacancy promoter.The modified ZIF catalyst accelerates the structural transformation from MOF precursor to electrochemical active species and simultaneously enhances the vacancy density during the electrochemical activation process.The optimized electrocatalyst exhibits an extremely low overpotential 175 mV to deliver 10 mA cm^(-2) and superior durability(100 h)at 100 mA cm^(-2).The comprehensive characterization results reveal the structural transformation from the initial tetrahedral Co sites to cobalt oxyhydroxide(CoOOH)and the formation process of oxygen vacancies(CoOOH-Vo)at a high anodic potential.These findings represent a promising way to achieve highly active MOF-based electrocatalysts for water oxidation. | Zhanwu Lei Xu Jin Jianming Li Yang Liu Jian Liu Shuhong Jiao Ruiguo Cao | 2022 | Journal of Energy Chemistry2022，31，2： | 1 |
| 3 | Pomegranate-like C_(60)@cobalt/nitrogen-codoped porous carbon for high-performance oxygen reduction reaction and lithium-sulfur battery显示文摘Porous carbon materials play essential roles in electrocatalysis and electrochemical energy storage.It is of significant importance to rationally design and tune their porous structure and active sites for achieving high electrochemical activity and stability.Herein,we develop a novel approach to tune the morphology of porous carbon materials(PCM)by embedding fullerene C_(60),achieving improved performance of oxygen reduction reaction(ORR)and lithium-sulfur(Li-S)battery.Owing to the strong interaction between C_(60)and imidazole moieties,pomegranate-like hybrid of Ow-embedded zeolitic imidazolate framework(ZIF-67)precursor is synthesized,which is further pyrolyzed to form C_(60)-embedded cobalt/nitrogen-codoped porous carbon materials(abbreviated as C_(60)@Co-N-PCM).Remarkably,the unique structure of C_(60)@Co-N-PCM offers excellent ORR electrocatalytic activity and stability in alkaline solutions,outperforming the commercial Pt/C(20 wt.%)catalyst.Besides,C_(60)@Co-N-PCM as a novel cathode delivers a high specific capacity of-900 mAh·g^(-1) at 0.2 C rate in Li-S batteries,which is superior to the pristine ZIF-67-derived PCM without embedding C_(60). | Jianhua Wu Shiyang Wang Zhanwu Lei Runnan Guan Muqing Chen Pingwu Du Yalin Lu Ruiguo Cao Shangfeng Yang | 2021 | Nano Research2021，14，8： | 0 |
| 4 | Synthesis and Electrochemical Investigation of O3-Type High-nickel NCM Cathodes for Sodium-ion Batteries显示文摘Sodium ion batteries(SIBs)are promising energy storage devices for smart grid applications due to their low cost and the high abundance of sodium,but few cathode materials of SIBs with high energy density are available for practical applications.Herein,a series of NaNCM ternary materials(NCM=nickel-cobalt-manganese)is obtained by solid-phase reaction with well-regulated temperature and other reaction conditions.XRD results show that impure NiO phase is more likely to occur under high nickel content.The cross-section SEM indicates that the primary particles in the electrode materials are radially distributed along the radial direction,and the internal porous structure is conducive to the infiltration of electrolyte.The initial specific capacities of Na[Ni0.68Co0.10Mn0.22]O2(NaNCM712),Na[Ni0.6Co0.2Mn0.2]O2(NaNCM622)and Na[Ni0.4Co0.3Mn0.3]O2(NaNCM433)at 0.2 C are 165.5,153.1 and 146.8 mA·h/g,and the corresponding capacity retention rates are 63.2%,78.5%and 71.7%after 100 cycles.NaNCM712 possesses the highest initial specific capacity,and NaNCM433 delivers the best rate capability.The rate capabilities of high-nickel and low-cobalt NaNCM cathodes need to be further improved.Moreover,ex-situ XRD pattern reveals the structure evolution(from O3 type to P2 type)during a long cycling charge and discharge process. | CHEN Yawei WANG Shiyang JIE Yulin LEI Zhanwu CAO Ruiguo JIAO Shuhong | 2021 | Chemical Research in Chinese Universities2021，37，2： | 0 |
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