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Outstanding performances of graphite||NMC622 pouch cells enabled by a non-inert diluent

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Journal of Energy Chemistry 2023年第6期81卷 593-602,I0013页

作者： Qinqin Cai Hao Jia guanjie li Zhangyating Xie Xintao Zhou Zekai Ma lidan Xing Weishan li Engineering Research Center of MTEES(Ministry of Education) Research Center of BMET(Guangdong Province)Engineering Lab.of OFMHEB(Guangdong Province)Key Lab.of ETESPG(GHEI)and Innovative Platform for ITBMD(Guangzhou Municipality)School of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina

Although high salt concentration electrolyte(HCE)can construct effective li F-rich interphase film and solve the interphasial instability issue of graphite anode,its high cost,high viscosity and poor wettability with electrode materials limit its large-scale ***,localized high concentration electrolyte(LHCE)is obtained by introducing an electrochemically inert diluent into HCE to avoid the above-mentioned problems while maintaining the high interphasial stability of HCE with graphite *** traditional inert diluents,1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluropropyl ether(TTE)with electrochemical activity is introduced into propylene carbonate(PC)-based HCE to obtain LHCE-2(1 M liPF_(6),PC:DMC:TTE=1:1:6.1)*** and theoretical simulation results show that TTE participates in the oxidation decomposition and film-forming reaction at the NCM622 cathode surface,conducting a cathode electrolyte interphase(CEI)rich in organic fluorides with excellent electron insulation ability,high structural stability and low interphasial *** to the outstanding interphasial properties induced by LHCE-2,the graphite||NMC622 pouch cell reaches a capacity retention of 80%after 500 cycles at 1 C under room *** at sub-zero temperatures,the capacity released by the cell with LHCE-2 electrolyte is significantly higher than that of HCE and conventional EC-based ***,the LHCE-2 electrolyte inherits the advantages of TTE flame-resistant,thus improving the safety of the battery.

关键词： lithium-ion batteries Propylene carbonate Localized high-concentration electrolyte Non-Inert diluent Graphite||NMC622 pouch cells

Highly improved cyclic stability of Ni-rich/li batteries with succinic anhydride as electrolyte additive and underlying mechanism

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Journal of Energy Chemistry 2023年第3期78卷 80-90,I0003页

作者： Shu Yang guanjie li Xiaoyan lin Changyong Mo Xianggui Zhou lijiao Quan Kuan Zhou Suli li Hai Wang Weishan li School of Chemistry South China Normal UniversityGuangzhou 510006GuangdongChina Zhuhai CosMX Battery Co. LtdZhuhai 519180GuangdongChina National and Local Joint Engineering Research Center of MPTES in High Energy and Safety liBs Engineering Research Center of MTEES(Ministry of Education)and Key Lab.of ETESPG(GHEI)South China Normal UniversityGuangzhou 510006GuangdongChina

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 *** this work,we report a new strategy to address this *** is found that the cyclic stability of Ni-rich/li battery can be significantly improved by using succinic anhydride(SA) as an electrolyte ***,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% *** 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 *** anode side,SA can but MA and CA cannot form a protective solid electrolyte interphase(SEI) on li *** cathode side,three anhydrides can suppress the formation of hydrogen fluoride from electrolyte oxidation decomposition,but SA behaves ***,MA shows adverse effects on the interface stability of li anode and NCM811 cathode,which originates from its high *** 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 *** 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.

关键词： lithium-metal battery Ni-rich cathode Electrolyte additives Succinic Anhydride Cyclic stability

Practical assessment of the energy density of potassium-ion batteries

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Science China Chemistry 2024年第1期67卷 4-12页

作者： liang Sun guanjie li Shilin Zhang Sailin liu Jodie Yuwono Jianfeng Mao Zaiping Guo School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide 5000Australia

1 Introduction The evolution of modern human society closely depends on affordable,efficient,and safe energy storage ***,lithium-ion batteries(liBs)are the dominant energy storage systems to power portable electronics... 详细信息

关键词： energy lithium smart

Recent progress in electrolyte design for advanced lithium metal batteries

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SmartMat 2023年第5期4卷 1-29页

作者： Mingnan li Caoyu Wang Kenneth Davey Jingxi li guanjie li Shilin Zhang Jianfeng Mao Zaiping Guo School of Chemical Engineering&Advanced Materials The University of AdelaideAdelaideAustralia

lithium metal batteries(LMBs)have attracted considerable interest for use in electric vehicles and as next-generation energy storage devices because of their high energy ***,a significant practical drawback with LMBs is the instability of the li metal/electrolyte interface,with concurrent parasitic reactions and dendrite growth,that leads to low Coulombic efficiency and poor cycle *** to the significant role of electrolytes in batteries,rationally designed electrolytes can improve the electrochemical performance of LMBs and possibly achieve fast charge and a wide range of working temperatures to meet various requirements of the market in the *** there are some review papers about electrolytes for LMBs,the focus has been on a single parameter or single performance separately and,therefore,not sufficient for the design of electrolytes for advanced LMBs for a wide range of working *** review presents a systematic summary of recent progress made in terms of electrolytes,covering the fundamental understanding of the mechanism,scientific challenges,and strategies to address drawbacks of electrolytes for high-performance *** advantages and disadvantages of various electrolyte strategies are also analyzed,yielding suggestions for optimum properties of electrolytes for advanced LMBs ***,the most promising research directions for electrolytes are discussed briefly.

关键词： anion-derived SEI fast charge liquid electrolyte design lithium metal batteries safe electrolytes wide working temperature

New PM, Old 'Prescription'?

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Beijing Review 2022年第37期65卷 28-29页

作者： li guanjie the Center for British Studies at the Shanghai Academy of Global Governance and Area Studies Shanghai International Studies University

On September 5, the UK’s Foreign Secretary liz Truss prevailed in a two-month race to succeed Boris Johnson as Conservative Party leader and the next day she was formally appointed by Queen Elizabeth Ⅱ in Scotland as the UK’s new prime *** victory came as no surprise. Truss proved a favorite in the polls ever since the last two candidates were confirmed and she maintained a large lead over her rival—former Chancellor of the Exchequer Rishi Sunak.

关键词： favorite formally maintained

Tackling application limitations of high-safetyγ-butyrolactone electrolytes:Exploring mechanisms and proposing solutions

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Journal of Energy Chemistry 2024年第6期93卷 193-201,I0005页

作者： Haojun Wu Zhangyating Xie guanjie li Lei Zheng Zhiwei Zhao Jiarong He Yanbin Shen Jiahao Hu Zhangquan Peng Guiming Zhong lidan Xing Weishan li School of Chemistry South China Normal UniversityGuangzhou 510006GuangdongChina National and Local Joint Engineering Research Center of MPTES in High Energy and Safety liBs Engineering Research Center of MTEES(Ministry of Education)Research Center of BMET(Guangdong Province)and Key Lab.of ETESPG(GHEI)South China Normal UniversityGuangzhou 510006GuangdongChina Laboratory of Advanced Spectroelectrochemistry and li-ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina i-Lab CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123JiangsuChina School of Chemical Engineering Faculty of SciencesEngineering and TechnologyThe University of AdelaideSA 5005Australia

Developing wide-temperature and high-safety lithium-ion batteries(liBs)presents significant challenges attributed to the absence of suitable solvents possessing broad liquid range and non-flammability properties.γ-Butyrolactone(GBL)has emerged as a promising solvent;however,its incompatibility with graphite anode has hindered its *** limitation necessitates a comprehensive investigation into the underlying mechanisms and potential *** this study,we achieve a molecular-level understanding of the perplexing interphase formation process by employing in-situ spectroelectrochemical techniques and density function *** findings reveal that,even at high salt concentrations,GBL consistently occupies the primary li^(+)solvation sheath,leading to extensive GBL decomposition and the formation of a high-impedance and inorganic-poor solid-electrolyte interphase(SEI)*** to manipulating solvation structures,our research demonstrates that the utilization of filmforming additives with higher reduction potential facilitates the pre-establishment of a robust SEI film on the graphite *** approach effectively inhibits GBL decomposition and significantly enhances the battery's *** study provides the first reported intrinsic understanding of the unique GBLgraphite incompatibility and offers valuable insights for the development of wide-temperature and high-safety liBs.

关键词： γ-Butyrolactone/Graphite incompatibility Unique solvation structure SEI film lithium-ion batteries

Current Status of Stem Cells in the Treatment of Premature Ovarian Failure

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Journal of Biosciences and Medicines 2024年第7期12卷 263-280页

作者： Guojie Ji Huanhuan Hu Rui liu guanjie li Jiangshan Zhao Huigen Feng Key Laboratory of Fertility Preservation Sanquan College of Xinxiang Medical University Xinxiang China School of life Sciences and Technologies Xinxiang Medical University Xinxiang China

Premature ovarian failure (POF) is a prevalent cause of female infertility. POF features include estrogen hypofunction, amenorrhea, infertility, and high gonadotropin levels. The etiology of POF is genetic diseases, autoimmune diseases, enzyme defects and environmental factors. The development of Regenerative medicine has made stem cell and exosome (EXOs) therapy effective for POF. This review discusses POF stem cell research and development.

关键词： Etiology Infertility Premature Ovarian Failure Regenerative Medicine Stem Cells

农村环境基础设施建设中的农民筹资意愿研究——以陕西省为例

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生态经济 2017年第12期33卷 109-113,126页

作者：李冠杰咸阳师范学院经济与管理学院陕西咸阳712000

运用区域研究法和比较研究法,选取陕北、关中、陕南三大区域38个行政村,走访298户农户,通过收回的861份调查问卷来考查农村环境基础设施的农民需求,并以此为视角分析农村环境基础设施建设中的农民筹资意愿,研究结果表明:(1)陕西省农村... 详细信息

运用区域研究法和比较研究法,选取陕北、关中、陕南三大区域38个行政村,走访298户农户,通过收回的861份调查问卷来考查农村环境基础设施的农民需求,并以此为视角分析农村环境基础设施建设中的农民筹资意愿,研究结果表明:(1)陕西省农村环境基础设施建设的农民筹资意愿与农民需求之间存在一定对应关系,但不同区域农民对设施具体项目的需求程度不同,由此带来设施建设的农民筹资意愿不同;(2)地方政府应尊重农民筹资意愿,强调农民"受益人"角色,搭建农村环境基础设施建设农民筹资的操作平台,构建"上下互动"的公共决策机制;(3)地方政府应积极构建多元投入的农村环境基础设施筹资体系,并以此实现农村环境基础设施的多中心治理。

关键词：农村环境基础设施农民需求:筹资农民意愿

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试析印度的金砖国家战略

南亚研究 2014年第1期 119-142页

作者：李冠杰上海国际问题研究院博士后工作站华东师范大学历史学博士后流动站

2009年金砖国家机制形成后,印度对这一机制的态度从不太看好到越来越重视金砖国家的内部合作和国际影响力。通过这一机制,印度把经济、政治和安全等关切充分表达出来,其战略目标也开始浮现。印度的金砖国家战略有显性和隐性之分。从表面... 详细信息

2009年金砖国家机制形成后,印度对这一机制的态度从不太看好到越来越重视金砖国家的内部合作和国际影响力。通过这一机制,印度把经济、政治和安全等关切充分表达出来,其战略目标也开始浮现。印度的金砖国家战略有显性和隐性之分。从表面看,印度意欲吸引其他金砖国家的大量外资,试图改善与这些国家的贸易逆差,积极学习其发展经验,这些战略诉求基本上是经济方面的。从深层看,印度力图营造良好的入常氛围,创造处理安全问题的良好环境,并为大国崛起布局谋划。印度的金砖国家战略是综合性的,实现这些战略目标,需要强力和效率。

关键词：印度金砖国家战略曼莫汉·辛格