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锂离子电池正极材料的研究现状 总被引:4,自引:0,他引:4
在简要介绍新一代充电电池——锂离子电池近年发展概况的基础上,阐述了锂离子电池几种正极材料(LiCoO2、LiNiO2、LiMn2O4、LiFePO4及锂钒氧化物等)的研究现状。 相似文献
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钠离子电池凭借资源和成本优势在大规模储能和低速电动车领域展现出极大应用前景。层状氧化物理论容量较高且易于合成,是目前最具应用潜力的钠离子电池正极材料之一。如何改善层状氧化物正极材料的循环稳定性并提升其能量密度是当前的科学前沿问题。首先,综述了层状氧化物正极材料的几种典型改性方法,从组分设计的角度,探讨了不同掺杂元素、不同掺杂位点对材料容量和循环寿命的影响,阐述了利用阴离子反应提供额外容量的基本原理,概述了提高阴离子氧化还原可逆性的掺杂策略;从结构设计的角度,介绍了复合相材料的制备、微观结构的设计和调控等方向的最新进展;从表面设计的角度,讨论了金属氧化物、磷酸盐等作为包覆层对改善材料稳定性和倍率性能的作用机制。最后,总结了层状氧化物储钠正极材料现阶段面临的挑战,并对其未来的发展方向进行了展望,提出了新的研究思路。 相似文献
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锂离子电池正极材料的发展现状和研究进展 总被引:1,自引:1,他引:0
介绍了锂离子电池正极材料钴酸锂、镍酸锂、锰酸锂、磷酸铁锂、钒的氧化物以及导电高聚合物正极材料的发展现状和研究进展.LiCoO2在今后正极材料发展中仍然有发展潜力,通过微掺杂和包覆都可使钴酸锂的综合性能得到提高,循环性能大大改善.环保、高能的三元材料和磷酸铁锂为代表的新型正极材料必将成为下一代动力电池材料的首选. 相似文献
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锂离子二次电池锂锰氧化物正极材料因其价格低廉、性能优良而成为研究的热点。本文综述了近年来锂离子二次电池LiMn2O4正极材料的研究进展,并对该材料的结构、性能、合成方法以及存在的问题进行了重点阐述。LiMn2O4材料具有尖晶石结构,目前制备主要固相烧结和液相合成方法。通过加入过量的锂和引和杂原子及采用工艺可改善其循环性能。 相似文献
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正Last month,Chinalco signed framework agreement for strategic cooperation with Harbin Municipal Government in Harbin Xiong Weiping,Chairman of Chinalco,said that based on the strategic deployment to build world top-class mining company with the highest growth potential,Chinalco was now concentrating all efforts on making strategic transition and structural adjustment,strategic cooperation with the local governments where 相似文献
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《China Nonferrous Metals Monthly》2014,(12)
<正>According to the latest info from Jiangxi Province State-owned Assets Supervision and Administration Commission,Jiangxi Copper Corporation was approved to become the first pilot enterprise for deepening reform.Contents of the pilot work is"Three Self"(self expansion,self decision-making,self 相似文献
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《Baosteel Technical Research》2014,8(4)
正Baosteel Technical Research,a quarterly journal,which is issued domestically and abroad,is run and sponsored by Baosteel Group Corporation.Baosteel Technical Research mainly reports the achievements in technological innovation,academic research,new product development and industrial equipment improvement by Baosteel.It will continue to follow up on hot topics and serve the company’s technological development and progress.Its readers include experts in 相似文献
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《China Nonferrous Metals Monthly》2014,(1):9-10
【正】According to the Ministry of Industry and Information Technology,the Ministry has released the 2013 Operation Report on China’s Industrial Communication Indu... 相似文献
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正Recently,Chinalco and Gansu Provincial People’s Government signed"Framework Agreement for Strategic Cooperation on Reform,Restructuring and Transition Development of Chinalco’s Electrolytic Aluminum Enterprises in Gansu",signifying that the strategic cooperation between Chinalco and Gansu Province had made new substantive progress. 相似文献
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《China Nonferrous Metals Monthly》2014,(12)
正Owing to continual downturn in real estate and bulk commodity markets,a number of traditional industries in China suffered unfavorable impact in performance.With the progressive disclosure of third quarter report,the no-pleasant-surprise performance of 相似文献
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正The High Performance Magnetic Material Phase II Project,an industry upgrading project implemented by Inner Mongolia Baotou IronSteel Rare Earth(Group)Hi-tech Co.,Ltd,recently basically finished equipment commissioning,signifying that the enterprise had developed the production capacity of15000 t/a Nd-Fe-B strip casting alloy and 5000t/a Nd-Fe-B magnet,thus becoming the world’s 相似文献
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正With the signing of"Letter of intention for Propelling Integration of Shandong Rare Earth Enterprises"between Shandong Province Commission Of Economy and Informatization,China IronSteel Research Institute Group("China Steel Institute"),and China Rare MetalsRare Earth Co.,Ltd("China Rare Earth"),the"Shandong Rare Earth Group"jointly set up by the 3 units thus broke surface.On August 9,reporters of the China Economic Herald learned from Shandong Province 相似文献