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| 1 | Challenges and opportunities for nanomaterials in spectral splitting for high-performance hybrid solar photovoltaic-thermal applications:A review显示文摘Hybrid photovoltaic-thermal(PV-T)collectors,which are capable of cogenerating useful thermal energy and electricity from the same aperture area,have a significantly higher overall efficiency and ability to displace emissions compared to independent,separate photovoltaic panels,solar thermal collectors or combinations thereof.Spectral splitting has emerged as a promising route towards next-generation high-performance PV-T collectors,and nanotechnology plays an important role in meeting the optical and thermal requirements of advanced spectral splitting PV-T collector designs.This paper presents a comprehensive review of spectral splitting technologies based on nanomaterials for PV-T applications.Emerging nanomaterials(nanofluids,nanofilms and nanowires)suitable for achieving spectral splitting based on reflection,diffraction,refraction and/or absorption approaches in PV-T collectors are presented,along with the associated challenges and opportunities of these design approaches.The requirements from such materials in terms of optical properties,thermal properties,stability and cost are discussed with the aim of guiding future research and innovation,and developing this technology towards practical application.Nanofluids and nanofilms are currently the most common nanomaterials used for spectral splitting,with significant progress made in recent years in the development of these materials.Nevertheless,there still remains a considerable gap between the optical properties of currently-available filters and the desired properties of ideal filters.Aiming to instruct and guide the future development of filter materials,a simple generalized method is further proposed in this paper to identify optimal filters and efficiency limits of spectral splitting PV-T systems for different scenarios.It is found that the optimal filter of a spectral splitting PV-T system is highly sensitive to the value of thermal energy relative to that of electricity,which therefore depends strongly on the application and location.The efficiency limit of spectral splitting PV-T collectors is significantly higher than that of standalone PV panels.The stability of nanomaterial filters remains a critical challenge for their long-term employment and also for high-temperature operation in practical applications. | Gan Huang Sara Riera Curt Kai Wang Christos N.Markides | 2020 | Nano Materials Science2020，2，3： | 3 |
| 2 | 钠离子无机固体电解质研究进展显示文摘钠离子电池因储量丰富、成本低廉而成为可替代锂离子电池的储能设备之一,尤其是在大规模储能领域展现出了广阔的应用前景。然而,类似锂离子电池,以可燃的液态电解质作为离子传输媒介的钠离子电池也不可避免地面临着安全性的挑战。固态电解质的使用不仅可以大幅提升电池系统的安全性,与金属负极匹配更能进一步实现电池能量密度同步提升。在各类固态电解质中,无机固态电解质以高离子电导率和离子迁移数、高力学性能及稳定性等诸多优势而备受瞩目。尽管如此,在全固态钠电池的实际应用中,不同类型的无机固态电解质材料仍面临离子电导率低、化学与电化学稳定性差等不同困境。因此,无机固态电解质材料的研究和开发是实现固态钠电池应用的必经之路。本文介绍了离子在固体中的迁移机制,并综述了氧化物、硫化物以及络合氢化物钠离子固态电解质的研究进展,重点强调不同结构电解质离子电导率的提升策略和提高化学及电化学稳定性的方法,包括通过离子掺杂提升离子电导率,调控晶界处化学组分或利用低熔点添加剂降低钠的快离子导体(natrium super ionic conductor,NASICON)型电解质的晶界电阻,解决硫化物型电解质的空气敏感问题,开发新型硫化物超离子导体,降低络合氢化物的有序-无序相变温度同时提高室温离子电导率等。最后对固态电解质面临的关键挑战和未来发展趋势进行总结和展望。 | 孙歌 魏芷宣 张馨元 陈楠 陈岗 杜菲 | 2020 | 储能科学与技术2020，9，5： | 2 |
| 3 | 柔性金属空气电池的发展现状及未来展望显示文摘柔性金属空气电池由于兼具柔性形变和能源存储受到广泛关注。然而,柔性金属空气电池目前仍存在诸多问题,电池柔性、空气电极催化活性和空气电极柔性都亟待提高,使用的固态凝胶电解质存在离子电导率不高、力学性能差等问题。本文通过对近期相关文献的梳理,首先分类总结了一维线缆型、二维平面型和三维三明治结构柔性金属空气电池各自的结构特点;其次,重点讨论了非自支撑和自支撑空气电极的制备及存在的问题。非自支撑电极使用黏结剂将催化剂涂覆在导电基底上,黏结剂等添加物会增加非活性物质组分、堵塞孔结构、降低电导率,催化剂也容易脱落,而自支撑电极使用水热、气相沉积、原子层沉积及静电纺丝等方法使催化剂原位生长在导电基底上,避免了非自支撑电极存在的问题。另外,本文总结了目前提高电解质性能的相关研究,通过降低聚合物的结晶度,改变温度等方式提高离子电导率。最后,对柔性金属空气电池的发展提出了展望,认为自支撑电极制备和新凝胶电解质材料的探索将会成为研究热门。如果能使空气电极和凝胶电解质两个界面接触更紧密,两者结合成一个有机整体,通过滴加电解液和添加金属箔片直接启动电池,简化电池组装,使电池应用更加广泛。 | 陈志城 李宗旭 蔡玲 刘易斯 | 2022 | 储能科学与技术2022，11，5： | 2 |
| 4 | Modification of NASICON Electrolyte and Its Application in Real Na-Ion Cells显示文摘The low ionic conductivity of solid-state electrolytes(SSEs)and the inferior interfacial reliability between SSEs and solid-state electrodes are two urgent challenges hindering the application of solid-state sodium batteries(SSSBs).Herein,sodium(Na)super ionic conductor(NASICON)-type SSEs with a nominal composition of Na_(3+2x)Zr_(2-x)MgxSi_(2)PO_(12) were synthesized using a facile two-step solid-state method,among which Na_(3.3)Zr_(1.85)Mg_(0.15)Si_(2)PO_(12)(x=0.15,NZSP-Mg_(0.15))showed the highest ionic conductivity of 3.54mS∙cm^(-1) at 25℃.By means of a thorough investigation,it was verified that the composition of the grain boundary plays a crucial role in determining the total ionic conductivity of NASICON.Furthermore,due to a lack of examination in the literature regarding whether NASICON can provide enough anodic electrochemical stability to enable high-voltage SSSBs,we first adopted a high-voltage Na_(3)(VOPO_(4))2F(NVOPF)cathode to verify its compatibility with the optimized NZSP-Mg_(0.15) SSE.By comparing the electrochemical performance of cells with different configurations(low-voltage cathode vs high-voltage cathode,liquid electrolytes vs SSEs),along with an X-ray photoelectron spectroscopy evaluation of the after-cycled NZSP-Mg_(0.15),it was demonstrated that the NASICON SSEs are not stable enough under high voltage,suggesting the importance of investigating the interface between the NASICON SSEs and high-voltage cathodes.Furthermore,by coating NZSP-Mg_(0.15) NASICON powder onto a polyethylene(PE)separator(PE@NASICON),a 2.42 A∙h non-aqueous Na-ion cell of carbon|PE@NASICON|NaNi_(2/9)Cu_(1/9)Fe_(1/3)Mn_(1/3)O_(2) was found to deliver an excellent cycling performance with an 88%capacity retention after 2000 cycles,thereby demonstrating the high reliability of SSEs with NASICON-coated separator. | Qiangqiang Zhang Quan Zhou Yaxiang Lu Yuanjun Shao Yuruo Qi Xingguo Qi Guiming Zhong Yong Yang Liquan Chen Yong-Sheng Hu | 2022 | Engineering2022，8，1： | 1 |
| 5 | Garnet-type solid electrolyte:Advances of ionic transport performance and its application in all-solid-state batteries显示文摘All-solid-state lithium batteries(ASSLBs),which use solid electrolytes instead of liquid ones,have become a hot research topic due to their high energy and power density,ability to solve battery safety issues,and capabilities to fulfill the increasing demand for energy storage in electric vehicles and smart grid applications.Garnet-type solid electrolytes have attracted considerable interest as they meet all the properties of an ideal solid electrolyte for ASSLBs.The garnet-type Li_(7)La_(3)Zr_(2)O_(12)(LLZO)has excellent environmental stability;experiments and computational analyses showed that this solid electrolyte has a high lithium(Li)ionic conductivity(10^(-4)-10^(-3) S·cm^(-1)),an electrochemical window as wide as 6 V,stability against Li metal anode,and compatibility with most of the cathode materials.In this review,we present the fundamentals of garnet-type solid electrolytes,preparation methods,air stability,some strategies for improving the conductivity based on experimental and computational results,interfacial issues,and finally applications and challenges for future developments of LLZO solid electrolytes for ASSLBs. | P.M.GONZALEZ PUENTE Shangbin SONG Shiyu CAO Leana Ziwen RANNALTER Ziwen PAN Xing XIANG Qiang SHEN Fei CHEN | 2021 | Journal of Advanced Ceramics2021，10，5： | 1 |
| 6 | Nb掺杂对Na3.2Hf2Si2.2P0.8O12电性能的影响显示文摘在固体电解质Na3.2Hf2Si2.2P0.8O12的Si位掺杂Nb,得到了具有NASICON结构的固体电解质Na3.2-xHf2NbxSi2.2-xP0.8O12(x=0~0.3)。掺杂量对固体电解质烧结性能和电性能的影响试验结果表明,随着Nb掺杂量的增多,固体电解质变得致密,电导率先增大后减小。当Nb的掺杂量x=0.2时,固体电解质的室温电导率最大,为1.61×10^-3 S·cm^-1。直流极化法测得的不同温度下的离子迁移数均在0.99以上,证明了固体电解质主要是Na离子传导。 | 齐重兴 朱靖 谢荣凯 王岭 戴磊 | 2020 | 唐山师范学院学报2020，42，6： | 0 |
| 7 | NASICON型微晶玻璃电解质的研究现状与展望显示文摘系统地回顾了微晶玻璃固态电解质发展历史,并阐述了NASICON型(Na~+ superionic conductor)材料的基本结构和离子传导机理。对各种NASICON型微晶玻璃固体电解质的最新研究进行了综合论述,着重于钠离子导电以及锂离子导电的微晶玻璃电解质。总结了已开发的固体电解质的结构及性能演变规律,并分析了这些材料的局限所在,提出性能提升的参考方案。另外,介绍了几种NASICON型微晶玻璃电解质在电池中应用的案例,有望为开发综合性能更优异的新型固态电解质提供指导。 | 覃春春 罗志伟 梁皓璋 雷微程 卢安贤 | 2021 | 陶瓷学报2021，42，1： | 0 |
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