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12篇 您的检索式:作者名="Chaogang Liu"
    题名 作者 年代 出处 被引量
1Fluorine-substituted O3-type NaNi_(0.4)Mn_(0.25)Ti_(0.3)Co_(0.05)O_(2-x)F_(x) cathode with improved rate capability and cyclic stability for sodium-ion storage at high voltage显示文摘O3-type Na NiO_(2)-based cathode materials undergo irreversible phase transition and serious capacity decay at high voltage above 4.0 V in sodium-ion batteries. To address these challenges, effects of Fsubstitution on the structure and electrochemical performance of Na Ni_(0.4)Mn_(0.25)Ti_(0.3)Co_(0.05)O_(2) are investigated in this article. The F-substitution leads to expanding of interlayer, which can enhance the mobility of Na+. NaNi_(0.4)Mn_(0.25)Ti_(0.3)Co_(0.05)O_(1.92)F_(0.08)(NMTC-F_(0.08)) with the optimal F-substitution degree exhibits much improved rate capability and cyclic stability. It delivers reversible capacities of 177 and 97 m Ah g^(-1) at 0.05 and 5 C within 2.0–4.4 V, respectively. Galvanostatic intermittent titration technique verifies faster kinetics of Na+diffusion in NMTC-F_(0.08). And in-situ XRD investigation reveals the phase evolution of NMTC-F_(0.08), indicating enhanced structural stability results from F-substitution. This study may shed light on the development of high performance cathode materials for sodium-ion storage at high voltage.Chaojin Zhou Lichun Yang Chaogang Zhou Jiangwen Liu Renzong Hu Jun Liu Min Zhu 2021Journal of Energy Chemistry2021,30,9:3
2Study on the Performance and Commercial Application of New Generation DMMC-1 Type Catalyst for Deep Catalytic Cracking显示文摘在过去的十年, SINOPEC 不间断地一直在从事发展并且深催化的裂开升级(两重棉包线) 为从重油生产丙烯的技术。最近,在在在分子的水平精制的油的区域取得了很多进步以后的 SINOPEC 开发了为 DCC 过程设计的新一代 DMMC-1 类型催化剂。实验室评估测试与展示最好的全面表演的存在 MMC-2 类型催化剂相比显示出那, DMMC-1 类型催化剂增加了丙烯收益 2.2% ,丙烯选择增加了 10% 。说的催化剂为重油在汽油与石蜡内容的减小一起裂开和焦炭选择完成更好的产品分布并且改进产品质量改进了它的能力。在在西诺佩克·安金·布朗奇同伴的一个 650-kt/a 广告两重棉包线单位的说的催化剂的申请的结果表明了 DMMC-1 催化剂为重油裂开表明了一个提高的能力并且能从 83.92 m%增加全部的液体收益到 84.56 m%, LPG 收益到从 34.60 m %,到从到从 44.91 m%的 45.91 m%的 15.37 m%和丙烯集中的 17.80 m%的丙烯收益,和还原剂的 38.90 m %从 7.61 m%的焦炭收益到在到 37.5 v%的从 42.3 v%的汽油的 7.05 m%和石蜡内容,导致一年等于5219万 RMB 的增长利润。这种技术进一步升级了并且发展在工业同伴之中一直在命令一个领先的位置的 DCC 技术。Long Jun Tian Huiping Liu Yujian Xie Chaogang Li Jibing 2007China Petroleum Processing & Petrochemical Technology2007,9,4:2
3Isotype Heterojunction‑Boosted CO_(2) Photoreduction to CO显示文摘Photocatalytic conversion of CO_(2) to high-value products plays a crucial role in the global pursuit of carbon–neutral economy.Junction photocatalysts,such as the isotype heterojunctions,offer an ideal paradigm to navigate the photocatalytic CO_(2) reduction reaction(CRR).Herein,we elucidate the behaviors of isotype heterojunctions toward photocatalytic CRR over a representative photocatalyst,g-C_(3)N_(4).Impressively,the isotype heterojunctions possess a significantly higher efficiency for the spatial separation and transfer of photogenerated carriers than the single components.Along with the intrinsically outstanding stability,the isotype heterojunctions exhibit an exceptional and stable activity toward the CO_(2) photoreduction to CO.More importantly,by combining quantitative in situ technique with the first-principles modeling,we elucidate that the enhanced photoinduced charge dynamics promotes the production of key intermediates and thus the whole reaction kinetics.Chaogang Ban Youyu Duan Yang Wang Jiangping Ma Kaiwen Wang Jiazhi Meng Xue Liu Cong Wang Xiaodong Han Guozhong Cao Liyong Gan Xiaoyuan Zhou 2022Nano-Micro Letters2022,14,5:2
4Correlation between expressions of ERCC1/TS mRNA and effects of gastric cancer to chemotherapy in the short term显示文摘Liqi Chen Guoli Li Jieshou Li Chaogang Fan Jian Xu Bo Wu Kun Liu Caihua Zhang 2013Cancer Chemotherapy and Pharmacology2013,,4:1
5The effect of flow rate of compressed hot water on xylan,lignin,and total mass removal from corn stover显示文摘Chaogang Liu Charles E Wyman 2003Industrial Engineering Chemistry Research2003,42,21:1
6Wyman Partial flow of compressed-hot water through corn stover to enhance hemicellulose sugar recovery and enzymatic digestibility of cellulose显示文摘Chaogang Liu Charles E 2005Bioresource Technology2005,18,96:1
7The effect of flow rate of compressed hot water on xylan, lignin, and total mass re- moval from corn stover显示文摘LIU Chaogang WYMAN C E 2003Ind Eng Chem Res2003,42,21:1
8The enhancement of xyiose monomer and xylotriose degradation by inorganic salts in aqueous solutions at 180℃显示文摘Liu Chaogang Wyman C E 2006Carbohydrate Research2006,341,:1
9Partial flow of compressed-hot water through corn stover to enhance hemicellulese sugar recovery and enzymatic digestibility of cellulose显示文摘Chaogang Liu Charles E Wyman 2005Bioresource Technology2005,96,18:1
10A new insight into the promoting effects of transition metal phosphides in methanol electrooxidation显示文摘The construction of highly active catalysts for methanol oxidation reaction(MOR)is central to direct methanol fuel cells.Tremendous progress has been made in transition metal phosphides(TMPs)based catalysts.However,TMPs would be partially damaged and transformed into new substances(e.g.,Pt-M-P composite,where M represents a second transition metal)during Pt deposition process.This would pose a large obstacle to the cognition of the real promoting effects of TMPs in MOR.Herein,Co_(2)P co-catalysts(Pt-P/Co_(2)P@NPC,where NPC stands for N and P co-doped carbon)and Pt-Co-P composite catalysts(Pt-CoP/NPC)were controllably synthesized.Electrocatalysis tests show that the Pt-Co-P/NPC exhibits superior MOR activity as high as 1016 m A/mg_(Pt),significantly exceeding that of Pt-P/Co_(2)P@NPC(345 m A/mg_(Pt)).This result indicates that the promoting effect is ascribed primarily to the resultant Pt-Co-P composite,in sharply contrast to previous viewpoint that Co_(2)P itself improves the activity.Further mechanistic studies reveal that Pt-Co-P/NPC exhibits much stronger electron interaction and thus manifesting a remarkably weaker CO absorption than Pt-P/Co_(2)P@NPC and Pt/C.Moreover,Pt-Co-P is also more capable of producing oxygen-containing adsorbate and thus accelerating the removal of surface-bonded CO^(*),ultimately boosting the MOR performance.Junjie Ding Shaojie Jing Changqing Yin Chaogang Ban Kaiwen Wang Xue Liu Youyu Duan Yuxin Zhang Guang Han Liyong Gan Jinsong Rao 2023Chinese Chemical Letters2023,34,6:0
11Organic Matter Accumulation in the Upper Permian Dalong Formation from the Lower Yangtze Region,South China显示文摘The Late Permian was marked by a series of important geological events and widespread organic-rich black shale depositions,acting as important unconventional hydrocarbon source rocks.However,the mechanism of organic matter(OM)enrichment throughout this period is still controversial.Based on geochemical data,the marine redox conditions,paleogeographic and hydrographic environment,primary productivity,volcanism,and terrigenous input during the Late Permian in the Lower Yangtze region have been studied from the Putaoling section,Chaohu,to provide new insights into OM accumulation.Five Phases are distinguished based on the TOC and environmental variations.In Phase I,anoxic conditions driven by water restriction enhanced OM preservation.In Phase II,euxinic and cycling hydrological environments were the two most substantial controlling factors for the massive OM deposition.During Phase III,intensified terrestrial input potentially diluted the OM in sediment and the presence of oxygen in bottom water weakened the preservation condition.Phase IV was characterized by a relatively higher abundance of mercury(Hg)and TOC(peak at 16.98 wt%),indicating that enhanced volcanism potentially stimulated higher productivity and a euxinic environment.In Phase V,extremely lean OM was preserved as a result of terrestrial dilutions and decreasing primary productivity.Phases I,II and IV are characterized as the most prominent OM-rich zones due to the effective interactions of the controlling factors,namely paleogeographic,hydrographic environment,volcanism,and redox conditions.FANG Chaogang ZHANG Chengcheng MENG Guixi XU Jinlong XU Naicen LI Hualing LIU Mu LIU Bo 2024Acta Geologica Sinica(English Edition)2024,98,1:0
12Regulating local coordination environment of Mg-Co single atom catalyst for improved direct methanol fuel cell cathode显示文摘Fuel cells operated with a reformate fuel such as methanol are promising power systems for portable electronic devices due to their high safety,high energy density and low pollutant emissions.However,several critical issues including methanol crossover effect,CO-tolerance electrode and efficient oxygen reduction electrocatalyst with low or non-platinum usage have to be addressed before the direct methanol fuel cells(DMFCs)become commercially available for industrial application.Here,we report a highly active and selective Mg-Co dualsite oxygen reduction reaction(ORR)single atom catalyst(SAC)with porous N-doped carbon as the substrate.The catalyst exhibits a commercial Pt/C-comparable half-wave potential of 0.806 V(versus the reversible hydrogen electrode)in acid media with good stability.Furthermore,practical DMFCs test achieves a peak power density of over 200 m W cm^(-2)that far exceeds that of commercial Pt/C counterpart(82 m W cm^(-2)).Particularly,the Mg-Co DMFC system runs over 10 h with negligible current loss under 10 M concentration methanol work condition.Experimental results and theoretical calculations reveal that the N atom coordinated by Mg and Co atom exhibits an unconventional d-band-ditto localized p-band and can promote the dissociation of the key intermediate*OOH into*O and*OH,which accounts for the near unity selective 4e-ORR reaction pathway and enhanced ORR activity.In contrast,the N atom in SAC–Co remains inert in the absorption and desorption of*OOH and*OH.This local coordination environment regulation strategy around active sites may promote rational design of high-performance and durable fuel cell cathode electrocatalysts.Kaiwen Wang Hanjun Zou Jiazhi Meng Chaogang Ban Xue Liu Jiangping Ma Cong Wang Liyong Gan Xiaodong Han Xiaoyuan Zhou 2023Journal of Magnesium and Alloys2023,11,6:0
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