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| 1 | 高安全性锂电池电解液研究与应用显示文摘锂离子电池(LIBs)由于具有较高的能量密度和良好循环稳定性而成为应用最广泛的储能设备之一。但是,其安全问题极大的限制了LIBs的生产及应用。LIBs的安全问题主要是由电池系统的热失控引起的,近年来,科学家们针对引起电池热失控的原因进行了研究,表明固体电解质界面(SEI)膜的分解是电池热失控的起点,随后电解液会与正负极材料发生反应,而目前使用的电解液具有闪点低、高度可燃等特点,存在着较大的安全隐患。因此,使用高安全性电解液可以有效提高LIBs的安全性。本文从可替代易燃的有机电解液角度,阐述了提高电解液安全的理论方法与技术途径,包括阻燃电解液、自身不易燃电解液、智能电解液以及水系电解液等方面。这些技术方法,还有望应用于有机液流电池体系,为高安全性大容量储能系统研究提供借鉴。 | 陈晓霞 刘凯 王保国 | 2020 | 储能科学与技术2020，9，2： | 11 |
| 2 | Mesoporous Graphene Hosts for Dendrite-Free Lithium Metal Anode in Working Rechargeable Batteries显示文摘Lithium(Li) metal anode has received extensive attentions due to its ultrahigh theoretical capacity and the most negative electrode potential. However, dendrite growth severely impedes the practical applications of the Li metal anode in rechargeable batteries. In this contribution, a mesoporous graphene with a high specific surface area was synthesized to host the Li metal anode. The mesoporous graphene host(MGH) has a high specific surface area(2090 m^2/g), which affords free space and an interconnected conductive pathway for Li plating and stripping, thus alleviating the volume variation and reducing the generation of dead Li during repeated cycles. More importantly, the high specific surface area of MGH efficiently reduces the local current density of the electrode, which favors a uniform Li nucleation and plating behavior, rendering a dendritefree deposition morphology at a low overpotential. These factors synergistically boost the Li utilization(90.1% vs. 70.1% for Cu foil) and life span(150 cycles vs. 100 cycles for Cu foil) with a low polarization of MGH electrode at an ultrahigh current of 15.0 mA/cm^2. The as-prepared MGH can provide fresh insights into the electrode design of the Li metal anode operating at high rates. | He Liu Xinbing Cheng Rui Zhang Peng Shi Xin Shen Xiaoru Chen Tao Li Jiaqi Huang Qiang Zhang | 2020 | Transactions of Tianjin University2020，26，2： | 9 |
| 3 | Strategies to anode protection in lithium metal battery:A review显示文摘Lithium metal batteries(LMBs)are considered the most promising energy stor-age devices for applications such as electrical vehicles owing to its tremendous theoretical capacity(3860 mAh g−1).However,the serious safety issues and poor cycling performance caused by the dendritic crystal growth during deposi-tion are concerned for any rechargeable batteries with a lithium metal anode.To make widespread adoption a possibility,considerable efforts have been devoted to suppressing lithium(Li)dendrite growth.In this review,the recent strategies to developing dendrite free Li anode,including constructing an artifi-cial solid electrolyte interface,current collector modification,separator film improvement,and electrolyte additive,are summarized.The merits and short-comings for different strategies are reviewed and a general summary and per-spective on the next generation rechargeable batteries are presented. | Jiawei Li Zhao Kong Xiaoxi Liu Bocong Zheng Qi Hua Fan Elias Garratt Thomas Schuelke Keliang Wang Hui Xu Hong Jin | 2021 | InfoMat2021，3，12： | 8 |
| 4 | 交联封装实现高效的水稳定锂金属负极显示文摘锂金属被认为是开发下一代高比能电池负极的终极选择.然而,由于金属锂固有的高化学反应活性而导致的低湿空气耐受性以及不稳定的固体电解质界面(SEI),严重阻碍了锂金属负极的商业化应用.本文通过温度调控路易斯碱性环境下PVDF–HFP膜的交联,成功实现了锂金属负极的高效封装.得益于交联PVDF–HFP内在的疏水性以及致密的微结构,封装的锂负极表现出显著改善的水稳定性,在潮湿的空气(25°C, 30%RH)以及纯水条件下的耐受性得到了显著提升.此外,由于强极性PVDF–HFP聚合物对有机电解液的优异亲和力,封装后的锂金属负极在对称电池和全电池中均表现出更优的电化学性能.这项工作展示了一种对湿敏性碱金属电极新颖而有效的封装策略,旨在为基于碱金属的高能量密度电池的大规模、低成本应用铺平道路. | 肖也 许睿 闫崇 梁业如 丁俊凡 黄佳琦 | 2020 | Science Bulletin2020，65，11： | 6 |
| 5 | High-Voltage Layered Ternary Oxide Cathode Materials:Failure Mechanisms and Modification Methods显示文摘Due to the large reversible capacity,high operating voltage and low cost,layered ternaryoxide cathode materials LiNixCoyAl-x-yO2(NCA)and LiNixCoyMn1-x-yO2(NCM)are considered asthe most potential candidate materials for lithium-ion batteries(LIBs)used in(hybrid)electricvehicles(EVs).However,next-generation long-range EVs require a high specific capacity(around 203 mAh·g^-1at 3.7V)at the cathode active material level,which is not provided withcurrent commercially layered ternary oxide cathodes.Increasing the operating voltage is aneffective method to improve the specific capacity of the cathode and the energy density of the battery,but the high operating voltage also causes a lot of problems,such as cation mix-ing and phase transformation,electrolyte decomposition,transition metal dissolution andmicrocracks.So far,researchers have carried out a lot of works to solve these issues.Surfacecoating,element doping and the design of electrolytes have been proved to be effective solu-tions.In this review,the failure mechanisms and modification methods of high-voltage lay-ered ternary oxide cathode materials are summarized,which could provide valuable infor-mation to the research of high-voltage layered ternary oxide cathode materials in basic sci-ence and industrial production. | Xiaodan Wang Ying Bai Xinran Wang Chuan Wu | 2020 | Chinese Journal of Chemistry2020，38，12： | 5 |
| 6 | Stable interfaces constructed by concentrated ether electrolytes to render robust lithium metal batteries显示文摘Lithium metal batteries(LMBs)are highly considered as promising candidates for next-generation energy storage systems.However,routine electrolytes cannot tolerate the high potential at cathodes and low potential at anodes simultaneously,leading to severe interfacial reactions.Herein,a highly concentrated electrolyte(HCE)region trapped in porous carbon coating layer is adopted to form a stable and highly conductive solid electrolyte interphase(SEI)on Li metal surface.The protected Li metal anode can potentially match the high-voltage cathode in ester electrolytes.Synergistically,this ingenious design promises high-voltage-resistant interfaces at cathodes and stable SEI with abundance of inorganic components at anodes simultaneously in high-voltage LMBs.The feasibility of this interface-regulation strategy is demonstrated in Li|LiFePO_(4) batteries,realizing a lifespan twice as long as the routine cells,with a huge capacity retention enhancement from 46.4%to 88.7%after 100 cycles.This contribution proof-ofconcepts the emerging principles on the formation and regulation of stable electrode/electrolyte interfaces in the cathode and anode simultaneously towards the next-generation high-energy-density batteries. | He Liu Tao Li Xiangqun Xu Peng Shi Xueqiang Zhang Rui Xu Xinbing Cheng Jiaqi Huang | 2021 | Chinese Journal of Chemical Engineering2021，34，9： | 5 |
| 7 | Homogenous lithium plating/stripping regulation by a mass-producible Zn particles modified Li-metal composite anode显示文摘A stable lithium-metal anode is critical for high performance lithium-metal batteries. However, heterogeneous Li plating/stripping may induce lithium dendrites formation on bare lithium-metal anode, which lowers the cell Coulombic efficiency and weakens battery safety. We found that bare Li metal surface becomes bumpy and cratered with numerous pits formation during Li stripping. These pits enhance electric field distortion and heterogeneous ion distribution during plating. Li plating preferentially happens on the edge of the pits, intensifying the voltage variation and Li dendrites growth, which leads to the cell rapid death or separator piercing. Herein, we propose a facile and mass-producible method to homogenize Li plating/stripping via adding lithiophilic particles into Li metal. Zinc particles were uniformly pressed in Li metal by a facile and scalable physical strategy of “rolling”, and transformed into LiZn alloy in situ through Li-Zn alloying at room temperature in a few minutes. The critical role of modified LiZn/Li composite anode in stabilizing electrode surface was revealed by both electrochemical test and simulation. Compared with bare Li anode, the evenly dispersed LiZn alloy particles in Li metal can effectively regulate the Li plating/stripping on electrode surface, reducing deepness of pits during stripping and directionally inducing Li plating to maintain electrode surface stability. On this basis, the pits depth of LiZn/Li composite during Li stripping is reduced to ∼ 15 μm, which is much shallower than that of bare Li metal of ∼ 40 μm. The LiZn/Li composite electrode can stably cycle for 600 h under Li plating/stripping capacity of 1 mAh·cm−2 and current density of 1 mA·cm−2 without any short circuit. Furthermore, assembled LiZn/Li||LiFePO4 full cell presents better cycling stability and rate performances than that of based on bare Li anode. | ZiLi Zhang Yang Jin Yu Zhao Jing Xu Bin Sun Kai Liu Hongfei Lu Nawei Lv Zhimin Dang Hui Wu | 2021 | Nano Research2021，14，11： | 0 |
| 8 | 电解液对钠离子电池硬碳负极的影响显示文摘较差的倍率性能和循环性能制约了钠离子电池的发展。通过制备不同类型的碳酸酯类电解液和醚类电解液,研究电解液对钠离子电池碳负极材料电化学性能的影响。研究表明,采用醚类电解液时,硬碳负极材料展现了较好的电化学性能。在30 mA/g的电流密度条件下,可逆容量为235 mAh/g。当电流密度提高到1 000 mA/g时,仍保有180 mAh/g的容量,且库伦效率稳定在99.9%以上。硬碳负极材料在醚类电解液中可以更快地形成完整的SEI膜,且成分更有利于Na+的快速传输,使钠离子电池拥有优越的循环性能和倍率性能。 | 李泽林 李文挺 张超 刘伟 彭军 安胜利 邱新平 | 2020 | 通信电源技术2020，37，7： | 0 |
| 9 | Propeller-shaped NI isomers of cathode interfacial material for efficient organic solar cells显示文摘Cathode interfacial materials(CIMs)stand as critical elemental in organic solar cells(OSCs),which can align energy levels,and foster ohmic contacts between the cathode and active layer of the OSCs.Nevertheless,the lagging advancement in CIMs has concurrently engendered the oversight of theoretical inquiries pertaining to the impact of molecular structure on their performance.Delving into this realm,we present two propeller-shaped isomers,4,4',4''-(benzo[1,2-b:3,4-b':5,6-b'']trithiophene-2,5,8-triyl)tris(2-(3-(dimethylamino)propyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione)(3ONIN)and 6,6',6''-(benzo[1,2-b:3,4-b':5,6-b'']trithiophene-2,5,8-triyl)tris(2-(3-(dimethylamino)propyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione)(3PNIN),distinguished by their molecular planarity,as a promising foundation for crafting highly efficient OSCs.This study illuminates the superiority of 3PNIN with more plane structure,exemplified by its enhanced molar extinction coefficient,deeper lowest unoccupied molecular orbital(LUMO)and highest occupied molecular orbital(HOMO)energy levels,intensified self-doping effect,heightened electron mobility,and elevated conductivity,in comparison to its counterpart,3ONIN.As a result,3PNIN and 3ONIN-treated OSC devices yield efficiencies of 17.73%and 16.82%,respectively.This finding serves as a compelling validation of the critical role played by molecular planarity in influencing CIM performance. | Hao Liu Jilei Jiang Shuixing Dai Liangmin Yu Xu Zhang Xianbiao Hou Ke Gao Heqing Jiang Minghua Huang | 2024 | Nano Research2024，17，3： | 0 |
| 10 | A Li_(3)Bi/LiF interfacial layer enabling highly stable lithium metal anode显示文摘Lithium metal anode is considered the alternative to graphite anode due to its ultra-high theoretical capacity of 3860 mAh·g^(-1).However,serious Li dendrite growth and drastic electrolyte side reactions restrain the commercial application of Li metal anode.In this work,a Li_(3)Bi/LiF interfacial layer is constructed on the surface of the Li metal anode by a spontaneous substitution reaction.The composite interfacial layer possesses excellent ionic conductivity,high mechanical strength,and great electrolyte wettability,which ensures fast Li-ion transfer and uniform Li deposition of the Li_(3)Bi/LiF@Li anode.Impressively,the Li_3Bi/LiF@Li symmetric cell provides a cycle life of more than 400 h with only 73 mV voltage polarization at 10 mA·cm^(-2).By pairing with commercial NCM622 cathode,the Li_(3)Bi/LiF@Li full cell exhibits a long cycle at a rate of 2 C. | Lei Tan Peng Chen Qiao-Yun Chen Xing Huang Kang-Yu Zou Yan-Mei Nie Ling-Jun Li | 2023 | Rare Metals2023，42，12： | 0 |
| 11 | 石墨烯/锂金属复合材料的制备和电化学性能显示文摘对于高能量密度锂金属电池体系,安全、稳定的锂负极材料是关键。采用微波还原、热还原和机械剥离方法制备了3种具有不同形貌结构的石墨烯,并通过压制和叠层工艺,制备出石墨烯/锂金属复合材料。通过扫描电子显微镜(SEM)、拉曼(Raman)、X射线光电子能谱(XPS)和N_(2)吸脱附曲线分析了不同石墨烯材料的形貌、组成、结构以及石墨烯/锂金属复合材料的形貌。同时采用Li||Li对称电池和LiFeO_(4)全电池,评价了石墨烯/锂金属复合材料作为负极的电化学性能。结果表明,石墨烯/锂金属复合材料具有层状结构,在微波还原石墨烯(MRGO)、热还原石墨烯(RGO)和机械剥离石墨烯(EG)中,MRGO最适用于改性金属锂,叠层3次得到的4MRGO/3Li复合材料具有最优的电化学性能。基于4MRGO/3Li的Li||Li对称电池在9.9 mV左右的极化电压下稳定循环1200圈,相对于纯锂金属,极化电压降低10.6 mV,安全性和稳定性大大提升。以4MRGO/3Li复合材料为负极的LiFeO_(4)全电池稳定循环800圈后,放电容量保持为156 mAh/g。 | 杜真真 于帆 王珺 王晶 李炯利 王旭东 | 2022 | 功能材料2022，53，12： | 0 |
| 12 | 锂离子电池安全添加剂的研究进展显示文摘锂离子电池具有高能量密度和良好的循环性能,是目前最为理想的动力电源储能体系。然而,由于大容量和高功率锂离子电池技术尚未成熟,存在安全隐患,导致其商业化应用受到了很大程度的限制。锂离子电池的安全问题主要有机械力破坏、异常充电、气体积聚和热失控等,本文分析了上述危险因素产生的原因以及抑制的方法。在这些增强电池安全性的方法中,使用安全添加剂是最为经济有效的手段,但要在电解液中找到一种对电池具有高安全性能且不牺牲其他性能的实用添加剂并不容易,未来同时具备多功能的添加剂将会是对电池性能提升最有希望的研究方向。本文分析了成膜添加剂、阻燃添加剂和防过充添加剂的作用机理,并对相关领域的发展方向进行了展望。 | 胡华坤 薛文东 蒋朋 李勇 | 2022 | 化工进展2022，41，10： | 0 |
| 13 | 碳酸酯类电解液中Mg(NO_(3))_(2)添加剂抑制锂枝晶生长的研究显示文摘在锂-硫化聚丙烯腈电池体系中,负极锂枝晶的形成和生长严重恶化了电池充放电性能,并给电池带来了安全隐患。而在更有利于稳定正极硫化聚丙烯腈材料的碳酸酯类电解液中,锂枝晶生长尤为严重。本文通过将硝酸镁添加到碳酸酯类电解液中,研究硝酸根和镁离子对锂金属表面改性的共同作用。实验数据发现,在硝酸根和镁离子共同作用下,锂枝晶生长被有效抑制。当硝酸镁浓度为100 mmol·L^(-1)时,锂铜半电池的库仑效率明显提高,并显著改善了锂-硫化聚丙烯腈电池的循环性能。300次循环后容量保持率为71%,远高于硝酸锂的61%和无添加剂的50%。 | 张彪 帅毅 王玉 杨纳川 陈康华 | 2021 | 电化学2021，27，4： | 0 |
| 14 | Understanding and modifications on lithium deposition in lithium metal batteries显示文摘Lithium metal has been considered as an ultimate anode choice for next-generation secondary batteries due to its low density,superhigh theoretical specific capacity and the lowest voltage potential.Nevertheless,uncontrollable dendrite growth and consequently large volume change during stripping/plating cycles can cause unsatisfied operation efficiency and serious safety concern,restraining its commercial use for the last 40 years.As widely used lithium-ion battery is approaching its theoretical limit at present,it is increasingly urgent to develop new energy storage equipment with sufficient practical capacity.Herein,two important processes of lithium deposition,nucleation and growth on lithium metal anode are reviewed.Modified three-dimensional(3 D)porous anodes with unique structure and dynamic surface conditions,as one of the most efficient designs on dendrites suppression,are specifically discussed in terms of their beneficial adjustment on the dendrite formation.Problems on current designs and prospects on future advanced porous anode are explored in the end. | Qin-Ya Yang Zhao Yu Yao Li Wang Zhang Hao-Wen Yuan Hong-Jie Li Wei Ma Shen-Min Zhu Sa Li | 2022 | Rare Metals2022，41，8： | 0 |
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