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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 | Geographic dis- tance and pH drive bacterial distribution in alkaline lake sedi- ments across Tibetan Plateau 显示文摘 | Xiong Jinbo Liu Yongqin Lin Xianggui | 2012 | Environmental Microbiology2012，14，9： | 1 |
| 3 | Cr^(3+)/Y^(3+)co-doped persistent luminescence nanoparticles with biological window activation for in vivo repeatable imaging显示文摘The near-infrared(NIR)persistent luminescence materials(PLMs)can remain long-lasting luminescence after removal of the excitation light,which permits bioimaging with high sensitivity owing to the absence of background fluorescence interference from in situ excitation.Recently,the NIR PLMs have aroused intensive research interest in bioimaging.However,the optimal excitation wavelength of current NIR PLMs is located in the ultraviolet region with shallow tissue penetration,making it difficult to activate effectively in vivo,and seriously hindering their further application in bioimaging.Herein,we report a novel kind of Cr^(3+)ions and Y^(3+)ions co-doped NIR PLM,Zn_(1.3)Ga_(1.4)Sn_(0.3)O_(4):Cr^(3+),Y^(3+)(ZGSCY),which emits NIR persistent luminescence at 696 nm.Compared with Zn_(1.3)Ga_(1.4)Sn_(0.3)O_(4):Cr^(3+)(ZGSC)excited by the light with a wavelength in the biological window(>650 nm),after being co-doped with Y^(3+)ions,the NIR persistent luminescence performance of ZGSCY is significantly improved because of the increase of trap concentration in the matrix.In addition,we synthesized ZGSCY nanoparticles(NPs)by the combustion method,which exhibit excellent optical properties after being excited by the light with a wavelength in the biological window.After surface modification with PEG,the ZGSCY NPs present low cytotoxicity.Notably,due to the co-doping of Y^(3+)ions,the signal-to-noise ratio(SNR)of ZGSCY NPs in vivo imaging is about 1.8 times higher than that of the ZGSC NPs.Furthermore,the rechargeable in vivo imaging and passive tumor-targeted imaging are successfully achieved by activating with a lightemitting diode(LED,659 nm)after intravenous injection of ZGSCY.Thus,this kind of NIR PLM with high excitation efficiency performance in the biological window is expected to promote its biomedical application in deep tissues. | Huimin Jiang Lin Liu Kexin Yu Xianggui Yin Shenghui Zheng Liang Song Junpeng Shi Yun Zhang | 2022 | Journal of Rare Earths2022，40，9： | 1 |
| 4 | 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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