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| 1 | Effect of lithium or aluminum substitution on the characteristics of graphite for anode of lithium ion batteries显示文摘Modification of graphite for anode of lithium ion batteries is investigated. Results of X-ray diffraction shows lithium and aluminum exists as Li compound (CH3COOLi@2H2O) and Al compound (AlD3) in the graphite, respectiovely.The Bmnauer-Emmer-Teller (BET) surface area of the modified graphite increases. According to the electrochemical measurements of Li/C cell and prototype Li-ion batteries, the Li-doped graphite has large reversible capacity of 312.2mA@h/g, low irreversible capacity of 52.9 mA@h/g, and high initial coulombic efficiency of 85.51%. The 063448 size prototype battery with Li-doped graphite anode has large discharge capacity of 845 mA@h and good cycling performance. The initial charge/discharge characteristic of Al-doped graphite is close to those of undoped graphite, but the prototype battery with Al-doped anode shows the best cycling performance with capacity retention ratio of 94.06% at the 200th cycle. | GUO Huajun, LI Xinhai, WANG Zhixing, PENG Wenjie, and GUO YongxingCollege of Metallurgical Science and Engineering, Central South University, Changsha 410083, China | 2003 | Rare Metals2003，22，4： | 9 |
| 2 | Performance and capacity fading reason of LiMn_2O_4/graphite batteries after storing at high temperature显示文摘Spinel LiMn2O4 was synthesized by a solid-state method. A 204468-size battery was fabricated and stored at 55°C. The structure and morphology of the LiMn2O4 cathode were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM) technique. Energy dispersive spectroscopy (EDS) was used to analyze the surface component of the carbon anode. The discharge capacities of LiMn2O4 stored for 0, 24, 48, and 96 h are 106, 98, 96, and 92 mAh?g?1, respectively. The cyclic performance is improved after storage. The capacity retentions of LiMn2O4 stored for 0, 24, 48, and 96 h are 83.8%, 85.8%, 86.9%, and 88.6% after 180 cycles. The intensity of all the LiMn2O4 diffraction peaks is weakened. Mn is detected from the carbon electrode when the battery is stored for 96 h. Cyclic voltammograms and electrochemical impedance spectroscopy (EIS) were used to examine the surface state of the electrode after storage. The results show that the resistance and polarization of LiMn2O4/electrolyte is increased after storage, which is responsible for the fading of capacity. | LIU Yunjian LI Xinhai GUO Huajun WANG Zhixing HU Qiyang PENG Wenjie YANG Yong | 2009 | Rare Metals2009，28，4： | 7 |
| 3 | Effect of VC addition on the microstructure and properties of Ti(C,N)-based nano cermets显示文摘In this paper,Ti(C,N)-based nano cermets were prepared by nano particles,and the effect of VC addition on the microstructure and proper-ties of Ti(C,N)-based nano cermets was investigated.The results showed that there existed black-core grayish-rim structure as well as gray-core grayish-rim structure in VC-doped Ti(C,N)-based nano cermets.With the increase of VC addition,the number of gray cores in-creased,the lattice parameter of Ti(C,N) phase increased,the grain size decreased,the hardness and fracture toughness of Ti(C,N)-based nano cermets were enhanced,and nearly full densification could be achieved.However,excessive addition of VC to 1 wt% resulted in slight decrease in hardness and fracture toughness.Some deep dimples were found in the fracture surface of cermets with VC addition,which cor-responded to ductile fracture. | YING Xiayu XIONG Ji GUO Zhixing CHEN Jianzhong XIONG Sujian YANG Mei FAN Hongyuan | 2011 | Rare Metals2011，30，6： | 7 |
| 4 | Effects of nano-Al_2O_3 and nano-ZrO_2 on the microstructure, behavior and abrasive wear resistance of WC-8Co cemented carbide显示文摘WC-8wt.% Co cemented carbides with varied nano-Al 2 O 3 and nano-ZrO 2 contents were prepared respectively following conventional powder metallurgical procedures. Effects of nano-Al 2 O 3 and nano-ZrO 2 on the microstructure, behavior, and abrasive wear resistance were investigated. The result shows that a finer and more homogenous microstructure can be achieved by increasing nano-Al 2 O 3 , and increasing nano-ZrO 2 makes the microstructure more refined. Nano-Al 2 O 3 and nano-ZrO 2 could both help to give increased hardness. Transverse rupture strength is higher if the above nano-oxides are doped appropriately, whereas excess addition is deleterious. Abrasive wear resistance presents different variations with respect to increasing nano-Al 2 O 3 and nano-ZrO 2 . By contrast, increasing nano-ZrO 2 enhances the abrasive wear resistance more effectively than increasing nano-Al 2 O 3 . The influence of the two nano-oxides contents on the abrasive wear resistance does not almost vary with wear time, and the optimum addition level of nano-Al 2 O 3 in WC-8% Co cemented carbide is 0.3 wt.% from the stand of abrasive wear resistance. In addition, both of the nano-oxides can retard the increase of wear rate in long-term abrasive wear. | YANG Tian'en XIONG Ji SUN Lan GUO Zhixing QIN Kangcai | 2011 | Rare Metals2011，30，5： | 7 |
| 5 | Improving the electrochemical performance of LiMn_2O_4/graphite batteries using LiF additive during fabrication显示文摘LiMn2O4/graphite batteries using LiF additive were fabricated and their electrochemical performance including discharge,cycling and storage performances were tested and compared with LiF-free LiMn2O4/graphite batteries.The LiMn2O4/graphite battery with LiF added shows better capacity (107.5 mAh/g),cycling performance (capacity retention ratio of 93% after 100 cycles),and capacity recovery ratio (98.1%) than the LiF-free battery.The improvement in electrochemical performance of the LiF-added LiMn2O4/graphite battery was due to the fact that LiF can restrain the dissolution of Mn from the spinel LiMn2O4 cathode into the electrolyte,leading to a smaller resistance and polarization. | LIU Yunjian GUO Huajun LI Xinhai WANG Zhixing | 2011 | Rare Metals2011，30，2： | 6 |
| 6 | Cooperation of nitrogen-doping and catalysis to improve the Li-ion storage performance of lignin-based hard carbon显示文摘Hard carbon draws great interests as anode material in lithium ion batteries(LIBs)due to its high theoretical capacity,high rate capability and abundance of its precursors.Herein we firstly synthesize the lignin-melamine resins by grafting melamine onto lignin.Afterwards,nitrogen doped hard carbon is prepared by the pyrolysis of lignin-melamine resins with the aid of catalyst(Ni(NO_3)_2·6H_2O)at 1000°C.Compared with the samples without nitrogen-doping and catalysis,as-prepared nitrogen doped hard carbon exhibits higher reversible capacity(345 mAh g^(–1)at 0.1 A g^(-1)),higher rate capability(145 mAh g^(-1)at 5 A g^(–1))and excellent cycling stability.The superior electrochemical performance is ascribed to the synergistic effect of nitrogen doping,graphitic structure and amorphous structure.Among them,nitrogen doping could create the vacancies around the nitrogen sites,which enhance the reactivity and the electronic conductivity of materials.Additionally,graphitic structure also enhances the electronic conductivity of materials,thus improving the electrochemical performance of hard carbon.It is worthwhile that lignin,renewable and abundant biopolymer,is converted to hard carbon with good electrochemical performance,which realizes the high value utilization of lignin. | Zhewei Yang Huajun Guo Feifei Li Xinhai Li Zhixing Wang Lizhi Cui Jiexi Wang | 2018 | Journal of Energy Chemistry2018，27，5： | 5 |
| 7 | KRAS mutation:from undruggable to druggable in cancer显示文摘Cancer is the leading cause of death worldwide,and its treatment and outcomes have been dramatically revolutionised by targeted therapies.As the most frequently mutated oncogene,Kirsten rat sarcoma viral oncogene homologue(KRAS)has attracted substantial attention.The understanding of KRAS is constantly being updated by numerous studies on KRAS in the initiation and progression of cancer diseases.However,KRAS has been deemed a challenging therapeutic target,even“undruggable”,after drugtargeting efforts over the past four decades.Recently,there have been surprising advances in directly targeted drugs for KRAS,especially in KRAS(G12C)inhibitors,such as AMG510(sotorasib)and MRTX849(adagrasib),which have obtained encouraging results in clinical trials.Excitingly,AMG510 was the first drug-targeting KRAS(G12C)to be approved for clinical use this year.This review summarises the most recent understanding of fundamental aspects of KRAS,the relationship between the KRAS mutations and tumour immune evasion,and new progress in targeting KRAS,particularly KRAS(G12C).Moreover,the possible mechanisms of resistance to KRAS(G12C)inhibitors and possible combination therapies are summarised,with a view to providing the best regimen for individualised treatment with KRAS(G12C)inhibitors and achieving truly precise treatment. | Lamei Huang Zhixing Guo Fang Wang Liwu Fu | 2021 | Signal Transduction and Targeted Therapy2021，6，12： | 5 |
| 8 | A Time-dependent Stochastic Grassland Fire Ignition Probability Model for Hulun Buir Grassland of China显示文摘Grassland fire is one of the most important disturbance factors in the natural ecosystems.This paper focuses on the spatial distribution of long-term grassland fire patterns in the Hulun Buir Grassland located in the northeast of Inner Mongolia Autonomous Region in China.The density or ratio of ignition can reflect the relationship between grassland fire and different ignition factors.Based on the relationship between the density or ratio of ignition in different range of each ignition factor and grassland fire events,an ignition probability model was developed by using binary logistic regression function and its overall accuracy averaged up to 81.7%.Meanwhile it was found that daily relative humidity,daily temperature,elevation,vegetation type,distance to county-level road,distance to town are more important determinants of spatial distribution of fire ignitions.Using Monte Carlo method,we developed a time-dependent stochastic ignition probability model based on the distribution of inter-annual daily relative humidity and daily temperature.Through this model,it is possible to estimate the spatial patterns of ignition probability for grassland fire,which will be helpful to the quantitative evaluation of grassland fire risk and its management in the future. | GUO Zhixing FANG Weihua TAN Jun SHI Xianwu | 2013 | Chinese Geographical Science2013，23，4： | 4 |
| 9 | Bifunctional Li6CoO4 serving as prelithiation reagent and pseudocapacitive electrode for lithium ion capacitors显示文摘Lithium ion capacitors(LICs)have been widely used as energy storage devices due to their high energy density and high power density.For LICs,pre-lithiation of negative electrode is necessary.In this work,we employ a bifunctional Li6CoO4(LCO)as cathodic pre-lithiation reagent to improve the electrochemical performance of LICs.The synthesized LCO exhibited high first charge specific capacity of 721 mAh g-1and extremely low initial coulombic efficiency of 3.19%,providing sufficient Li+ for the pre-lithiation of negative electrode in the first charge.Simultaneously,Li6–xCoOy is generated from LCO during the first charge process,which exhibits pseudocapacitive property and contributes to capacity in form of surface capacitance during subsequent cycles,increasing the capacity of capacitive positive electrode.With the appropriate amounts of addition to the positive side in LICs,this bifunctional prelithiation reagent LCO shows significantly improved the electrochemical performance with the energy density of 78.5 Wh kg-1after 300 cycles between 2.0 and 4.2 V at 250 mA g-1. | Yuntao Guo Xinhai Li Zhixing Wang Huajun Guo Jiexi Wang | 2020 | Journal of Energy Chemistry2020，29，8： | 3 |
| 10 | Transarterial infusion chemotherapy with FOLFOX for advanced hepatocellular carcinoma:a multi-center propensity score matched analysis of real-world practice显示文摘Background:To compare the treatment effectiveness and safety among transarterial infusion chemotherapy(TAI)with FOLFOX regimen,transarterial chemoembolization(TACE),and sorafenib in patients with BCLC stage C hepatocellular carcinoma(HCC).Methods:The data of consecutive patients with BCLC stage C HCC treated with TAI,TACE,or sorafenib from January 2015 to December 2018 at three centers were retrospectively analyzed.Propensity-score matched(PSM)analysis was pairwise performed to reduce selection bias.Treatment effectiveness and safety were evaluated and compared using the Kaplan-Meier method,log-rank test,Cox regression models,andχ2 test.Results:The median overall survival(OS)in the matched TAI cohort was significantly longer than the sorafenib cohort(19.6 vs.7.5 months,P=0.009),and the TACE cohort(estimated 27.8 vs.6.6 months,P<0.001).The difference in median progression-free survival(PFS)between the matched TAI and sorafenib cohorts was not significant(5.8 vs.2.3 months,P=0.219).The median PFS in the matched TAI cohort was significantly longer than the TACE cohort(6.5 vs.2.8 months,P<0.001).The objective response rate(ORR)in the matched TAI cohort was significantly higher than the sorafenib cohort(36.4%vs.0.0%,P<0.001)and the TACE cohort(48.7%vs.4.7%,P<0.001).The incidences of adverse events(AEs)were similar among these three cohorts.Conclusions:TAI with FOLFOX regimen was an effective and safe therapy that improved survival of patients with BCLC stage C HCC. | Shaohua Li Jie Mei Qiaoxuan Wang Feng Shi Hongyan Liu Ming Zhao Lianghe Lu Yihong Ling Zhixing Guo Yabing Guo Xiaoming Chen Ming Shi Wan Yee Lau Wei Wei Rongping Guo | 2021 | Hepatobiliary Surgery and Nutrition2021，10，5： | 2 |
| 11 | Microstructure and Properties of Gradient Cemented Carbide with Nano-TiN显示文摘Gradient cemented carbides with nano-TiN were prepared by the common powder metallurgical procedure. The formation of gradient zone and the microstructure, properties of the alloys were investigated using scanning electron microscope(SEM), energy dispersive spectroscopy(EDS) and other performance testing apparatus. Moreover, the effect of nano-TiN on the gradient cemented carbide was studied. It is found that gradient zone width increases slightly with nano-TiN introduction. Both cobalt and titanium concentrations reach the maximum near the gradient border. Tungsten concentration shows fluctuation from the surface to the bulk.(Ti,W)C phase grains are refined for nitrogen introduction. Core-rim structure has been observed under the SEM back-scattered mode. The core appears as dark due to more titanium in it and the rim with more tungsten appears as grey. In addition, the hardness and transverse rupture strength of gradient cemented carbide are enhanced with nano-TiN introduced. | 杨天恩 SUN Lan 熊计 GUO Zhixing ZHENG Xiaoming | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，1： | 2 |
| 12 | Apparent ages of suspended sediment and soil erosion of the Pearl River (Zhujiang) drainage basin显示文摘The carbon isotopic composition (Δ 14 C,δ 13 C) and apparent ages of suspended sediment were determined in the Pearl River in the years 1998,2000 and 2005.These results indicate that suspended POC consists mostly of young carbon and some 'old carbon'.Apparent ages of suspended POC range from 540 to 2050 a BP.The apparent ages are older in the Xijiang and Beijiang Rivers,while these values are variable in the Dongjiang River,including old and young samples.The suspended POCδ 13 C values increase with increasing Δ 14 C in the Pearl River,indicating that its source is soil and bedrock from depths under 15 30 cm.Since the organic carbon of the surface soil is quickly decomposed when it enters the rivers,its carbon isotopic characteristics are insignificant in suspended sediment.In the Pearl River drainage basin,there are areas with more severe soil erosion than others.For example,erosion is much more severe in the Xijiang River drainage basin when compared to the light soil erosion in the Dongjiang River drainage basin. | WEI XiuGuo SHEN ChengDe LI NingLi WANG FuShun DING Ping WANG Ning GUO ZhiXing LIU KeXin | 2010 | Chinese Science Bulletin2010，55，15： | 2 |
| 13 | Mesoporous Ternary Nitrides of Earth?Abundant Metals as Oxygen Evolution Electrocatalyst显示文摘As sustainable energy becomes a major concern for modern society,renewable and clean energy systems need highly active,stable,and low-cost catalysts for the oxygen evolution reaction(OER).Mesoporous materials offer an attractive route for generating efficient electrocatalysts with high mass transport capabilities.Herein,we report an efficient hard templating pathway to design and synthesize three-dimensional(3-D)mesoporous ternary nickel iron nitride(Ni3FeN).The as-synthesized electrocatalyst shows good OER performance in an alkaline solution with low overpotential(259 mV)and a small Tafel slope(54 mV dec?1),giving superior performance to IrO2 and RuO2 catalysts.The highly active contact area,the hierarchical porosity,and the synergistic effect of bimetal atoms contributed to the improved electrocatalytic performance toward OER.In a practical rechargeable Zn–air battery,mesoporous Ni3FeN is also shown to deliver a lower charging voltage and longer lifetime than RuO2.This work opens up a new promising approach to synthesize active OER electrocatalysts for energy-related devices. | Ali Saad Hangjia Shen Zhixing Cheng Ramis Arbi Beibei Guo Lok Shu Hui Kunyu Liang Siqi Liu John Paul Attfield Ayse Turak Jiacheng Wang Minghui Yang | 2020 | Nano-Micro Letters2020，12，6： | 2 |
| 14 | Extraction of valuable metals from lepidolite显示文摘 | Qunxuan Yan Xinhai Li Zhixing Wang Xifei Wu Huajun Guo Qiyang Hu Wenjie Peng Jiexi Wang | 2012 | Hydrometallurgy2012，，： | 1 |
| 15 | Design and preparation of gradient graphite/cermets self-lubricating composites显示文摘Based on the functionally graded materials(FGMs) design concept,the laminated-graded graphite/cermets self-lubricating composite was prepared to achieve the integration of mechanical properties and lubrication performance of the cermet.The effects of the layer number and thickness of graded structure on residual stresses in the gradient composites were investigated by finite element method(FEM).From the FEM analyses,the optimal gradient structure design was obtained corresponding to the following parameters: the number of graded layers n = 2 and the thickness of graded structure t = 1 mm.According to the optimum design,a graded graphite/cermets self-lubricating material with two layers was fabricated by a typical powder metallurgy technique.Compared with the homogenous graphite/cermets composite,the surface hardness and indentation fracture toughness of graded composite were increased by approximately 15.9% and 6.3%,respectively.The results of X-ray diffraction(XRD)stress measurement identified the existence of residual compressive stress on the surface of graded composite.Additionally,the friction and wear tests revealed that the wear resistance of the graphite/cermets self-lubricating composite was improved significantly via the graded structural design,whereas the coefficient of friction changed slightly. | Liming Zhou Ji Xiong Zhixing Guo Junliu Ye | 2018 | Journal of Materials Science & Technology2018，34，8： | 1 |
| 16 | A novel concept for convective heat transfer enhancement 显示文摘 | GUO Zengyuan LI Zhixing WANG Buxuan | 1998 | Heat Mass Transfer1998，41，14： | 1 |
| 17 | The influence of TiN content on erosion–corrosion behavior of Ti(C,N)-based cermets显示文摘 | Mengxia Liang Ji Xiong Zhixing Guo Weicai Wan Guangbiao Dong | 2013 | International Journal of Refractory Metals and Hard Materials2013，，： | 1 |
| 18 | Microstructure and properties of Ti(C, N)-Mo2 C-Fe cermets显示文摘 | Guo Zhixing Xiong Ji Yang Mei | 2009 | Inter- national Journal of Refractory Metals &Hard Materi- als2009，27，4： | 1 |
| 19 | Electrochemical performance and capacity fading reason of LiMn 2 O 4 /graphite batteries stored at room temperature显示文摘 | Liu Yunjian Li Xinhai Guo Huajun Wang Zhixing Hu Qiyang Peng Wenjie Yang Yong | 2008 | Journal of Power Sources2008，，1： | 1 |
| 20 | A facile synthesis of graphite/silicon/graphene spherical composite anode for lithium-ion batteries显示文摘 | Lei Gan Huajun Guo Zhixing Wang Xinhai Li Wenjie Peng Jiexi Wang Silin Huang Mingru Su | 2013 | Electrochimica Acta2013，，： | 1 |
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