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排序方式: 共有202条查询结果,搜索用时 15 毫秒
1.
Muhammad Khurram Tufail Niaz Ahmad Le Yang Lei Zhou Muhammad Adnan Naseer Renjie Chen Wen Yang 《中国化学工程学报》2021,39(11):16-36
The development of an inorganic electrochemical stable solid-state electrolyte is essentially responsible for future state-of-the-art all-solid-state lithium batteries (ASSLBs). Because of their advantages in safety, working temperature, high energy density, and packaging, ASSLBs can develop an ideal energy storage system for modern electric vehicles (EVs). A solid electrolyte (SE) model must have an economical synthesis approach, exhibit electrochemical and chemical stability, high ionic conductivity, and low interfacial resistance. Owing to its highest conductivity of 17 mS·cm-1, and deformability, the sulfide-based Li7P3S11 solid electrolyte is a promising contender for the high-performance bulk type of ASSLBs. Herein, we present a current glimpse of the progress of synthetic procedures, structural aspects, and ionic conductivity improvement strategies. Structural elucidation and mechanistic approaches have been extensively discussed by using various characterization techniques. The chemical stability of Li7P3S11 could be enhanced via oxide doping, and hard and soft acid/base (HSAB) concepts are also discussed. The issues to be undertaken for designing the ideal solid electrolytes, interfacial challenges, and high energy density have been discoursed. This review aims to provide a bird's eye view of the recent development of Li7P3S11-based solid-state electrolyte applications and explore the strategies for designing new solid electrolytes with a target-oriented approach to enhance the efficiency of high energy density all-solid-state lithium batteries. 相似文献
2.
以LD端面泵浦的固体激光器为例,讨论了泵浦光源在激光晶体中的分布模型,计算了泵浦速率分布函数的归一化,并对分布函数进行了数值模拟。 相似文献
3.
文章采用了三镜环形腔内插入标准具获取高功率窄线宽可调谐1064 nm 激光。对环形腔的单向运行、标准具压窄线宽与调谐波长及激光大基模体积运转进行了理论分析与计算,结合实验优化了腔镜曲率与输出耦合率。在808 nm 半导体激光泵浦功率151 W 条件下,获得输出功率33.7 W、光束质量因子 M 2=1.28、线宽0.1 GHz 的单向1064 nm 激光输出,相应的光转换效率22.3%。采用高精度控温仪对标准具进行精确温控,实现激光波长的精密调谐。改变标准具温度获得1064 nm 波长调谐范围72.6 GHz,调谐精度为220 MHz。波长调谐过程中1064 nm 激光输出功率变化约10%。整个系统稳定可靠,而且相对简单,较易实现,为获得可调谐窄线宽1064 nm 激光提供了实用有效的技术手段。 相似文献
4.
Haohao Dong Liangzhu Zhang Yongping Liao Kai Huang Cheng Lian Xinghai Zhou Zhao Zhang Esko I. Kauppinen Zhong-Shuai Wu 《Advanced functional materials》2023,33(29):2301103
Micro-supercapacitors (MSCs) as high-power density energy storage units are designed to meet the booming development of flexible electronics, requiring simple and fast fabrication technology. Herein, a fast and direct solvent-free patterning method is reported to fabricate shape-tailorable and flexible MSCs by floating catalyst chemical vapor deposition (FCCVD). The nitrogen-doped single-walled carbon nanotubes (N-SWCNTs) are directly deposited on a patterned filter by FCCVD with designable patterns and facilely dry-transferred on versatile substrates. The obtained MSCs deliver an excellent areal capacitance of 3.6 mF cm−2 and volumetric capacitance of 98.6 F cm−3 at a scan rate of 5 mV s−1 along with excellent long-term cycle stability over 125 000 circles. Furthermore, the MSCs show good performance uniformity, which can be readily integrated via connection in parallel or series to deliver a stable high voltage (4 V with five serially connected devices) and large capacitance (5.1 mF with five parallel devices) at a scan rate of 100 mV s−1, enabling powering the light emitting displays. Therefore, this method blazes the trail of directly preparing flexible, shape-customizable, and high-performance MSCs. 相似文献
5.
Alfonso Sepúlveda Jan Speulmanns Philippe M. Vereecken 《Science and Technology of Advanced Materials》2018,19(1):454-464
The growing demand of flexible electronic devices is increasing the requirements of their power sources. The effect of bending in thin-film batteries is still not well understood. Here, we successfully developed a high active area flexible all-solid-state battery as a model system that consists of thin-film layers of Li4Ti5O12, LiPON, and Lithium deposited on a novel flexible ceramic substrate. A systematic study on the bending state and performance of the battery is presented. The battery withstands bending radii of at least 14 mm achieving 70% of the theoretical capacity. Here, we reveal that convex bending has a positive effect on battery capacity showing an average increase of 5.5%, whereas concave bending decreases the capacity by 4% in contrast with recent studies. We show that the change in capacity upon bending may well be associated to the Li-ion diffusion kinetic change through the electrode when different external forces are applied. Finally, an encapsulation scheme is presented allowing sufficient bending of the device and operation for at least 500 cycles in air. The results are meant to improve the understanding of the phenomena present in thin-film batteries while undergoing bending rather than showing improvements in battery performance and lifetime. 相似文献
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《International Journal of Hydrogen Energy》2019,44(12):6103-6115
In this contribution, we reported the preparation of a novel conducting polymer hydrogel (CPH) by a sol-gel method, which was subsequently employed to fabricate a flexible all-solid-state supercapacitor device. Taking advantage of the synergistic effects of the different components in the conducting polymer hydrogel and the merits of the proposed synthesis strategies, the prepared supercapacitor device with CPH as electrode exhibited high area-normalized capacitance (2.2 F cm−2), high gravimetric capacitance (1573.6 F g−1) as well as high energy density of 0.18 mWh cm−2 (or 128.7 Wh Kg−1) at 0.08 mW cm−2 (or 55.1 W kg−1). This study did not only represent a novel all-solid-state, high performance, flexible supercapacitor with potential applications in flexible energy-related devices, but also developed a new method for enhancing capacitances and mechanical stability of all-solid-state flexible supercapacitor. 相似文献
9.
报道了全固态连续波555 nm黄-绿光激光器,黄-绿激光分别由Nd:YAG和Nd:YVO4晶体的946 nm和1342 nm谱线非线性和频产生,两条谱线各自晶体对应的能级跃迁分别为4F3/2-4I9/2和4F3/2-4I13/2。实验中采用复合折叠腔结构,利用LBOI类临界位相匹配进行腔内和频,当注入到Nd∶YAG和Nd:YVO4晶体的泵浦功率分别为12 W和8 W时,获得542 mW的TEM00连续波555 nm黄-绿激光输出,4 h功率稳定度优于±3.7%。实验结果表明,采用Nd:YAG和Nd:YVO4两种激光晶体进行腔内和频是获得黄-绿激光的高效方法,并可以应用到其它两种激光晶体进行腔内非线性和频,获得更多不同波长的激光输出。 相似文献
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