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| 1 | Revealing the critical effect of solid electrolyte interphase on the deposition and detriment of Co(Ⅱ) ions to graphite anode显示文摘'Dissolution,migration,and deposition'of transition metal ions (TMIs) result in capacity degradation of lithium-ion batteries (LIBs).Understanding such detrimental mechanism of TMIs is critical to the development of LIBs with long cycle life.In most previous works,TMIs were directly introduced into the electrolyte to investigate such a detrimental mechanism.In these cases,the TMIs are deposited directly on the fresh anode surface.However,in the practical battery system,the TMIs are deposited on the anode covered with solid electrolyte interphase (SEI) film.Whether the pre-presence of SEI film on anode surface influences the deposition and detriment of TMIs is unclear.In this work,the deposition of Co element on graphite anode with and without SEI film were systematically studied.The results clearly show that,in comparison with that of fresh graphite (SEI-free),the presence of SEI film aggravates the deposition of Co ions due to the Li^(+)–Co^(2+) ion exchange between the SEI and Co^(2+)-containing electrolyte without the driving of the electric field,leading to faster capacity fading of graphite anode.Therefore,how to regulate electrolytes and film-forming additives to design the components of SEI and prevent its exchange with TMIs,is a crucial way to inhibit the deposition and detriment of TMIs on graphite anode. | Qiming Xie Jiawei Chen Lidan Xing Xianggui Zhou Zekai Ma Binhong Wu Yilong Lin Hebing Zhou Weishan Li | 2022 | Journal of Energy Chemistry2022，31，6： | 2 |
| 2 | An Electrocatalytic Strategy for Dehydrogenative[4+2]Cycloaddition over a Cobalt-Based Catalyst显示文摘Exploring the anodic reaction to substitute conventional oxygen evolution reaction(OER)for the synthesis of complex pharmaceutical molecules is highly attractive.Here,we report an electrocatalytic strategy for dehydrogenative[4+2]cycloaddition of N,N-dialkylanilines with maleimides via dual functionalization of both C(sp3)-H and C(sp2)-H bonds,by using an electrochemically activated cobalt carbonate hydroxide hydrate supported on carbon cloth(CCHH-A/CC),affording various tetrahydroquinolines with high yields.This electrochemical transformation proceeds with high activity and stability,as well as good substrate compatibility.Mechanism study shows thatα-aminoalkyl radical exists in the electrooxidation reaction.This strategy shows significant potential for the synthesis of valuable chemicals by using an electrocatalytic strategy. | Xiaomeng Xue Ye Wang Lina Zhou Ruixiang Ge Jiangrong Yang Xianggui Kong Ming Xu Zhenhua Li Lina Ma Haohong Duan | 2022 | Chinese Journal of Chemistry2022，40，23： | 1 |
| 3 | Health education improves effectively therapy of inpatients with hypertension显示文摘Objective: Low rate of medication usage and blood pressure(BP) control, bad lifestyle, poor cognition to hypertension, have been obstacles in prevention from hypertensive disease and complication in Chinese cohort. Health education appears to be an impendent measure to improve this situation. To study the effect of health education on the rate of medication usage and BP control, the lifestyle, and the incidence of complication among patients with hypertension. Methods: 284 hypertensive inpatients were divided randomly into two groups: the control group was intervened with routine medication; the education group was intervened with routine medication in combination with intensive health education according to the investigation on the risk factors of cardiocerebrovascular diseases and cognitive levels of hypertensive disease. During 12.16 ± 1.95 months of following up, the status of lifestyle, the rate of medication usage and BP control, and incidence of complications between two groups were analyzed. Results: In education group, the rate of smoking, alcohol intake, lower-salt ingesting, exercise, medication usage and BP control were improved after intervention and significantly different from those before intervention(P < 0.01). After intervention, the incidence of complications in education group and control group was 10.9% and 30.5% respectively(P < 0.01). Conclusion: Intensive health education is an important measure in preventing from hypertension. | Xiang Gu Chunzhi Shi Yibai Feng Xianggui Wang Hongbin Nie Yongming Zhou Yeqiang Liu Xiangdong Xu | 2006 | Journal of Nanjing Medical University2006，20，3： | 1 |
| 4 | Recognition mechanism and sequence optimization of organophosphorus pesticides aptamers for better monitoring contaminations in food显示文摘Aptamers as a kind of biological recognition element have shown great potential in monitoring and the rapid quantification of organophosphorus pesticides(OPPs). However, molecules of OPPs are structurally similar and original aptamers selected by systematic evolution of ligands by exponential enrichment are usually long-chain bases, which hamper the further application under OPPs-aptamer recognition. The aim of the research was to develop a new strategy to design oligonucleotide sequences for binding OPPs by combination of experimental and molecular modeling methods. 3D models of aptamers binding OPPs were constructed, and binding energy and the most probable binding site for the OPPs were then determined by molecular docking, and the binding sites were further confirmed by the results of 2-AP replaced experiments. Based on the docking results, a new aptamer for detection 4 representative OPPs with only 29 bases was designed by reasonable truncation and mutation of the reported aptamer(named S4-29). The interaction between this new aptamer and OPPs were analyzed by molecular docking, microscale thermophoresis, circular dichroism and fluorometric analysis. The results revealed that the new aptamer exhibit more superior recognition performance to OPPs, which can be promote the monitoring ability of OPPs contaminations in food. | Pengfei Chen Chaoqiong Hu Xuan Tao Zheng Zhou Lijun Wang Xiao Yang Zhenming Che Xianggui Chen Yukun Huang | 2023 | Food Science and Human Wellness2023，12，5： | 0 |
| 5 | Degradation of platinum electrocatalysts for methanol oxidation by lead contamination显示文摘Platinum exhibits high electrocatalytic activity toward various reactions but might be poisoned by some species. This communication reports a new finding that the electrocatalytic activity of platinum for methanol oxidation will be largely lost in a lead-contaminated environment. This activity loss is demonstrated in an electrochemical cell using a lead counter electrode for measuring the activity of platinum electrode towards methanol oxidation. The recorded methanol oxidation current in this cell is significantly decreased compared with that using a platinum counter electrode. The possible mechanism is related to the adsorption of trace lead ions from the lead counter electrode, as confirmed by comparing the calculated binding energies of platinum and lead ions with oxygen ion. This report is of great importance for reliably designing and efficiently managing direct methanol fuel cells, because trace lead might be present in various components in the fuel cell systems or in air and attention should be paid to its negative effect. | Zihao Li Xianggui Zhou Subhash Singh Xiaoming Wei Chunlei Guo Weishan Li | 2023 | Chinese Chemical Letters2023，34，2： | 0 |
| 6 | Highly improved cyclic stability of Ni-rich/Li batteries with succinic anhydride as electrolyte additive and underlying mechanism显示文摘Lithium-metal battery based on Ni-rich cathode provides high energy density but presents poor cyclic stability due to the unstable electrode/electrolyte interfaces on both cathode and anode.In this work,we report a new strategy to address this issue.It is found that the cyclic stability of Ni-rich/Li battery can be significantly improved by using succinic anhydride(SA) as an electrolyte additive.Specifically,the capacity retention of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)/Li cell is improved from 14% to 83% after 200cycles at 1 C between 3.0 and 4.35 V by applying 5% SA.The underlying mechanism of SA contribution is understood by comparing the effects of malic anhydride(MA) and citraconic anhydride(CA), both of which share a similar molecular structure to SA but show different effects.On anode side,SA can but MA and CA cannot form a protective solid electrolyte interphase(SEI) on Li anode.On cathode side,three anhydrides can suppress the formation of hydrogen fluoride from electrolyte oxidation decomposition,but SA behaves best.Typically,MA shows adverse effects on the interface stability of Li anode and NCM811 cathode,which originates from its high acidity.Though the acidity of MA can be mitigated by substituting a methyl for one H atom at its C=C bond,the substituent CA cannot compete with SA in cyclic stability improvement of the cell,because the SEI resulting from CA is not as robust as that from SA,which is related to the binding energy of the SEI components.This understanding reveals the importance of the electrolyte acidity on the Ni-rich cathode and the robustness of the SEI on Li anode,which is helpful for rationally designing new electrolyte additives to further improve the cyclic stability of high-energydensity Ni-rich/Li batteries. | Shu Yang Guanjie Li Xiaoyan Lin Changyong Mo Xianggui Zhou Lijiao Quan Kuan Zhou Suli Li Hai Wang Weishan Li | 2023 | Journal of Energy Chemistry2023，，3： | 0 |
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