Li-Cd 합금을 이용한 환원추출방식을 LiCl-KCl 기반의 drawdown 공정에 적용하게 되면, LiCl-KCl 공융염의 조성이 파괴되므로 공정온도를 높여야 하며, 전해정련 및 전해제련과 같은 공정에 LiCl-KCl 용융염을 재사용할 수 없게 된다. 따라서, 본 연구에서는 공융염 조성에 적합한 Li-K-Cd 합금을 제조하였으며, 이를 이용하여 U와 Nd가 포함된 LiCl-KCl 염에 투입하여 용 융염 내 UCl3의 제거가 가능한지 평가하였다.

This research investigates and analyzes the distribution, creation period and creators, design characteristics, and process of change undergone by existing meandering streams used for the floating of wine cups(Liú shāng Qū shuǐ) in China. This study was conducted through literature review, fieldwork investigation and internet research. This research presented a categorization method and standard for discussion toward future research in this field by first categorizing Liú shāng Qū shuǐ facilities into five style categories: Lántíng style(A), Natural stream style(B), Cut stones excavation style(C), Broad natural rock carving style(D) and waterway style(E); this classification was carried out in addition to categorizing the Curved-stream banquet sites of B and C that are characterized by the stone carving style into the subcategories of Cut stones excavation and Broad natural rock carving styles. It is said that the ancient Liú shāng Qū shuǐ facilities of China are the product of natural landscape water systems and Pungryu(elegant lifestyle) culture; from the middle ages of the Tang and Song dynasties, garden forms changed to reflect miniascapes and an imitation of a landscape style, which represented a gradual transition from a tradition that entailed moderation in drinking and natural landscapes that copied Pungryu to those that were symbolic and placed more emphasis on games and amusement. Later in the modern Ming and Qing dynasties, the Cut stones excavation style became the mainstream approach for Curved-stream banquet sites. From this development, it seems that the Curved-stream banquet sites of China gradually evolved from Pungryu facilities used for water systems to garden facilities for amusement. However, the Lántíng⋅Natural stream⋅Cut stones excavation styles seem to have been continuously passed down in eclectic forms throughout all periods of Chinese history.

In this study, an experiment is performed to recover the Li in Li2CO3 phase from the cathode active material NMC (LiNiCoMnO2) in waste lithium ion batteries. Firstly, carbonation is performed to convert the LiNiO, LiCoO, and Li2MnO3 phases within the powder to Li2CO3 and NiO, CoO, and MnO. The carbonation for phase separation proceeds at a temperature range of 600oC~800oC in a CO2 gas (300 cc/min) atmosphere. At 600~700oC, Li2CO3 and NiO, CoO, and MnO are not completely separated, while Li and other metallic compounds remain. At 800 oC, we can confirm that LiNiO, LiCoO, and Li2MnO3 phases are separated into Li2CO3 and NiO, CoO, and MnO phases. After completing the phase separation, by using the solubility difference of Li2CO3 and NiO, CoO, and MnO, we set the ratio of solution (distilled water) to powder after carbonation as 30:1. Subsequently, water leaching is carried out. Then, the Li2CO3 within the solution melts and concentrates, while NiO, MnO, and CoO phases remain after filtering. Thus, Li2CO3 can be recovered.

Li Yun is a book written by Liu Qiu in the Song Dynasty. This book contains a collection of inscriptions in Han Dynasty and arranged in order of 206 rhymes. During the period from Small Seal to Official Script, it is of great value for studying changes in fonts and components. However, as far as the current research status of this book is concerned, it is mainly a brief analysis of the shape of the characters, citing individual glyphs to explain the problem, or lack of comprehensive and systematic research. Therefore, this article is based on previous scholars' researches, taking the inscriptions’ glyphs received in Li Yun as the main research object. Based on the ways in which the components evolve, this work compares these inscriptions’ glyphs with the seal scripts’ glyphs of Shuo Wen Jie Zi, and conducts a relatively systematic study of the character shape and organization system of Li Yun. There are five parts in the full text. In addition to the ‘Introduction’ of the first part and the ‘Conclusion’ of the second part, the remaining three parts are the main research contents. The second part is the study of the book, the version and style of Li Yun, and the presentation of research status and research ideas related to the research objects. The third part is to divide the evolution of the forms in the Li Yun into five types, to reclassify each type of glyph evolution for example analysis, and to briefly summarize the characteristics of each evolution type reflected in the book. The fourth part is mainly an overview of the analysis of the causes of the five types’ features and the evolution of the fonts. This article will also be accompanied by a full-text version of Li Yun. To have a clearer understanding and application of the classification description in the article, this article also shows a spreadsheet of all the glyphs of the book in the appendix section.

Using a high pressure homonizer, we report on the electrochemical performance of Li4Ti5O12(LTO) particles manufactured as anode active material for lithium ion battery. High-pressure synthesis processing is performed under conditions in which the mole fraction of Li/Ti is 0.9, the synthesis pressure is 2,000 bar and the numbers of passings-through are 5, 7 and 10. The observed X-ray diffraction patterns show that pure LTO is manufactured when the number of passings-through is 10. It is found from scanning electron microscopy analysis that the average size of synthesized particles decreases as the number of passings-through increases. LiCoO2-based active cathode materials are used to fabricate several coin half/full cells and their battery characteristics such as lifetime, rate capability and charge transfer resistance are then estimated, revealing quite good electrochemical performance of the LTO particles as an effective anode active material for lithium secondary batteries.

In the South China Sea Arbitration, the Chinese term-“li shi xing quan li” was mistranslated into “historic rights short of title,” regardless of the official English translation provided by Chinese government and preserved by international organizations. ‘quan li’ connotes a categorical meaning covering sovereignty and non-sovereignty rights, while “li shi xing” relates to claims and conduct historically before 1982. China’s “li shi xing quan li” in the SCS developed with the history of the general category of historic rights-an umbrella concept connoting both exclusive historic title and non-exclusive historic sovereign rights. It included China’s exclusive sovereignty over nansha qundao in the SCS and its non-exclusive sovereign rights in part of SCS. The Arbitral Tribunal’s negligence of the conceptual difference led to uncertainty in China’s maximum maritime entitlements in the SCS and reasonable doubt about its decision on the Philippines’ Submissions 1 and 2.

In this study, the compound Li3BO3 (LBO) is intended to be prepared by a polymeric complex method as a sintering aid for the densification of Li7La3Zr2O12 (LLZ) solid electrolyte. A polymeric precursor containing Li and B is heat-treated in an air atmosphere at a temperature range between 600℃ and 800℃. Instead of LBO, the compound Li2+xC1-xBxO3 (LCBO) is unexpectedly synthesized after a heat-treatment of 700℃. The effect of LCBO addition on sintering behavior and ion conductivity of LLZ is studied. It is found that the LCBO compound could lead to significant improvements in the densification and ionic conductivity of LLZ compared to pure LLZ. After sintering at 1100℃, the density of the LLZ-12wt%LBO composite is 3.72 g/cm3, with a high Li-ion conductivity of 1.18 × 10-4 Scm-1 at 28℃, while the pure LLZ specimen had a densify of 2.98 g/cm3 and Li-ion conductivity of 5.98 × 10−6 Scm-1.

Recently the distribution of two tortricid moths, Hendecaneura impar (Walsingham, 1900) and Rhopobota orbiculata (Zhang, Li, et Wang, 2005) was reported from Korea (Kim et al. 2014; Kim et al 2015). Here, we discuss the external morphology including the male and female genitalia, life history including host plants and mitochondrial DNA data (CO1) of these two species.

Li-incorporated ZnO thin films were deposited by using ultrasonic-assisted spray pyrolysis deposition (SPD) system. To investigate the effect of Li-incorporation on the performance of ZnO thin films, the structural, electrical, and optical properites of the ZnO thin films were analyzed by means of X-ray diffraction (XRD), field-emssion scanning electron microscopy (FE-SEM), Hall effect measurement, and UV-Vis spectrophotometry with variation of the Li concentraion in the ZnO sources. Without incorporation of Li element, the ZnO surface showed large spiral domains. As the Li content increases, the size of spiral domains decreased gradually, and finally formed mixed small grain and one-dimensional nanorod-like structures on the surface. This morphological evolution was explained based on an anti-surfactant effect of Li atoms on the ZnO growth surface. In addition, the Li-incorporation changed the optical and electrical properties of the ZnO thin films by modifying the crystalline defect structures by doping effects.

Ceramic powder, such as MgO, is added as a binder to prepare the green compacts of molten salts of an electrolyte for a thermal battery. Despite the addition of a binder, when the thickness of the electrolyte decreases to improve the battery performance, the problem with the unintentional short circuit between the anode and cathode still remains. To improve the current powder molding method, a new type of electrolyte separator with porous MgO preforms is prepared and characteristics of the thermal battery are evaluated. A Spherical PMMA polymer powder is added as a pore-forming agent in the MgO powder, and an organic binder is used to prepare slurry appropriate for tape casting. A porous MgO preform with 300 μm thickness is prepared through a binder burnout and sintering process. The particle size of the starting MgO powder has an effect, not on the porosity of the porous MgO preform, but on the battery characteristics. The porosity of the porous MgO preforms is controlled from 60 to 75% using a pore-forming agent. The batteries prepared using various porosities of preforms show a performance equal to or higher than that of the pellet-shaped battery prepared by the conventional powder molding method.

사용후핵연료 파이로프로세싱에서는 방사성 희토류 염화물(RECl3)을 함유한 LiCl-KCl 공융염폐기물이 발생되며, 핫셀시설에서 운영을 목적으로 단순한 형태의 공융염폐기물 처리공정을 개발하는 것이 필요하다. 본 연구에서는, LiCl-KCl 공융염폐기물 내 희토류 핵종 분리/고화공정의 단순화를 목적으로 Li2O-Al2O3-SiO2-B2O3계의 무기합성매질을 이용하여 LiCl-KCl 공융 염 내 희토류 핵종(Nd)을 분리한 후 분리생성물을 바로 고화하는 시험을 실시하였다. 공융염 내 희토류 염화물(NdCl3) 대비 0.67의 무게비에 해당하는 무기합성매질의 양으로도 Nd 핵종을 98wt% 이상 분리할 수 있었고, 이 때 얻은 희토류 핵종 포집생성물은 약 50wt% 수준의 희토류 산화물 함량을 보유하고 있었으며, 이 포집생성물을 화학적 내구성이 우수한 단일상의 균질한 유리고화체로 제조할 수 있었다. 이 결과들은 LiCl-KCl 공융염폐기물 내 희토류 핵종의 분리/고화공정을 단순화하기 위한 방안수립에 활용될 수 있을 것이다.

Silicon alloys are considered promising anode active materials to replace Li-ion batteries by graphite powder, because they have a relatively high capacity of up to 4200 mAh/g, and are environmentally friendly and inexpensive ECO-materials. However, its poor charge/discharge properties, induced by cracking during cycles, constitute their most serious problem as anode electrode. In order to solve these problems, Si-Ge-Al alloys with porous structure are designed as anode alloy powders, to improve cycling stability. The alloys are melt-spun to obtain the rapidly solidified ribbons, and then ball-milled to make fine powders. The powders are etched using 1 M HCl solution, which gives the powders a porous structure by removing the element Al. Subsequently, in this study, the microstructures and the characteristics of the etched powders are evaluated for application as anode materials. As a result, the etched porous powder shows better electrochemical properties than as-milled Si-Ge-Al powder.

Synthesis of Li+-selective 14-crown ether (CE) having rigid and bulky subunits was reported. CE-poly(vinyl alcohol) (PVA) dope solutions were electrospun. CEs were immobilized on PVA matrix via acid-catalyzed acetalization using novel aerosol method. Structures of new compounds and their immobilization to PVA were confirmed and characterized. Adsorption experiments show superior lithium capacity and selectivity among previously reported solid-supported CEs. Dihydroxy-dibenzo-14-crown-4 ether-PVA nanofiber membrane showed superior performance. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and future Planning (2015R1A2A1A15055407) and Ministry of Education (2009-0093816).

A thick film of Li7La3Zr2O12 (LLZO) solid-state electrolyte is fabricated using the tape casting process and is compared to a bulk specimen in terms of the density, microstructure, and ion conductivity. The final thickness of LLZO film after sintering is 240 μm which is stacked up with four sheets of LLZO green films including polymeric binders. The relative density of the LLZO film is 83%, which is almost the same as that of the bulk specimen. The ion conductivity of a LLZO thick film is 2.81 × 10−4 S/cm, which is also similar to that of the bulk specimen, 2.54 × 10−4 S/ cm. However, the microstructure shows a large difference in the grain size between the thick film and the bulk specimen. Although the grain boundary area is different between the thick film and the bulk specimen, the fact that both the ion conductivities are very similar means that no secondary phase exists at the grain boundary, which is thought to originate from nonstoichiometry or contamination.

리튬이온 이차전지는 리튬이온이 이동하면서 전기화학적 충방전사이클을 완성하는 에너지변환장치를 의미한다. 리튬이온 이차전지는 높은 에너지밀도와 낮은 자가방전률, 상대적으로 긴 수명주기 등 다양한 장점을 갖는다. 최근 전기차 수 요증가는 고용량 리튬이온 이차전지 개발을 촉진하고 있으나 음극에서의 dendrite 형성으로 인한 전기적 단락 현상과 전지 폭 발 문제와 같은 심각한 안전문제를 야기한다. 또한, 리튬이온 이차전지 구동시 상승된 온도에서 폴리올레핀계열(예 : 폴리에 틸렌과 폴리프로필렌) 격리막의 열수축 문제가 발생한다. 이와 같이 낮은 열 안정성은 리튬이온 이차전지의 성능과 수명의 감소로 이어진다. 본 연구에서는 폴리올레핀계열 함침격리막 제조를 위한 중요한 소재로서 술폰화 폴리아릴렌에테르술폰 랜 덤 공중합체를 사용하였으며, 제조된 격리막을 이용하여 dendrite 형성과 관련된 금속이온 흡착 능력과 리튬이온전도성, 열적 내구성이 평가되었다.

The relationship between Li Qingzhao and Buddhism has been less concerned. Self‐titled Yi’an Jushi,it couldn’t just be the reason of self‐loftiness. From the research of existing historical data, family misfortune, seedless and the influence of friends and family were the main reasons made Li Qingzhao approached to Buddhism. From the use of her Ci‐poetry allusion, imagery and realm,we can also find Li Qingzhao’s attitude about Buddhism. And with a new view of Buddhism, the problems such as the choice of imagery, the method of rhetoric and the style of Li Qingzhao’s Ci‐poems can be interpreted in a new way. Because of her unique life experience, Li Qingzhao approached Buddhism to relief the pain of life, and organic merged Buddhist thought into her works. The sadness and beauty of Li Qingzhao’s works just come from this. So, “Li Qingzhao’s indifference to Religion” is worth discussing, and the relationship between female Buddhist literati and Buddhism is still a subject worthy of further exploration and study.