李新海
电化学,固体化学,能源材料
个性化签名
- 姓名:李新海
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学术头衔:
博士生导师
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学科领域:
材料科学基础学科
- 研究兴趣:电化学,固体化学,能源材料
李新海,1962年出生。1990年于中南工业大学毕业,获得冶金物理化学博士学位。1993年晋升为教授,现为中南大学冶金科学与工程学院副院长,博士生导师。主要从事领域包括:电化学,固体化学,能源材料。先后主持科研项目20多项,其中通过省部级鉴定11项,获省部级以上科技成果奖5项,国家专利5项。发表学术论文130余篇,其中被EI、SCI收录的论文100篇次。注重将冶金物理化学基本原理向有色金属能源材料领域的实际应用,开发科技含量高、市场潜力大、经济与社会效益显著的产品,研究成功的锂离子电池、锂离子电池用钴酸锂、锂离子电池用碳素、镍/氢电池、高活性高密度球形氢氧化镍、新型储氢合金、无汞锌粉等新技术新产品都已转化为生产力,已使企业创产值4.8亿元,创效益1亿元。紧跟国际科技领域的最新发展前沿,与日本东京大学合作,开展了富勒烯及其化合物的制备、分离、电化学性质研究及单晶生长,研究成果达到国际领先水平,多次应邀赴日本就相关科研成果进行学术交流与讲学。1998年被评为湖南省普通高等学校科技工作先进工作者,1999年被评为长沙市“十优”青年、湖南省有突出表现的科技工作者,2001年获政府特殊津贴。李新海教授的学术兼职主要有:中国有色金属学会冶金物理化学学术委员会副主任委员,湖南省化学化工学会理事,中国锂电池行业协会理事, 《电池》期刊编委。
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640
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成果数
10
【期刊论文】Study on Diffusion of Hydrogen in AB5 Non-Stoichiometric Hydrogen Absorbing Alloys*
李新海, Wang Zhixing*, Li Xinhai, Chen Qiyuan, Peng Wenjie, Guo Huajun
JOURNAL OF RARE EARTHS, 2003, 21 (6): 0657~659,-0001,():
-1年11月30日
The diffusion coefficient of hydrogen atoms in the studied alloys was electrochemically measured by chronoanr perometry when the metallic hydride microelectrodes were completely discharged. It is found that the diffusion coefficient of hydrogen atoms decreases when cobalt is substituted for a minority of nickel. On the contrary, the diffusion coefficient increases with the partial substitution of manganese or aluminumfor nickel, which is related to the lattice constant and cell volumes of hydrogen absorbing alloys. The lattice constant c is obviously affected by the substitute elements greatly. The result shows that the expansion of cell volume resulted from the increase of value c causes the increase of diffusion coefficient which is especially obvious when the lattice constant is relatively low. However, this relationship is not clear if the lattice constant increases to some extent. It is suggested that this phenomenon is related to the interaction of hydrogen atoms with metallic atoms.
hydrogen absorbing alloy, diffusion, nonstoichiometry, electrochemistry
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李新海, HE Ze-qiang, LI Xin-hai, WU Xian-ming, HOU Zhao-hui, LIU En-hui, DENG Ling-feng, HU Chuan-yue, TIAN Hui-peng
Trans. Nonferrous Met. Soc. China, 2003, 13 (4): 0998~1002,-0001,():
-1年11月30日
Nanosized SnO2 powders were prepared by sol-gel process using inorganic salt as a precursor. The tin oxide powders obtained at different calcinating temperatures (300-700℃) were investigated by means of X-ray diffraction (XRD), infrared spectrum (IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA) and transmission electron microscopy (TEM) as well. The results indicate that well-crystallized nanosized SnO2 powders with a structure of rutile and uniform size about 10nm can be obtained when the calcinating is carried out at 550℃ for 3h using the method. The electrochemical properties of nanosized SnO2 powders as anode material for lithium ion batteries were also studied in detail. The results show that nanosized SnO2 is a candidate of anode material for lithium ion batteries with reversible capacity more than 372mA•h/g after ten cycles and low voltage for Li+ intercalation and de2intercalation.
tin dioxide, nanosized materials, sol-gel method, lithium ion batteries, anode, electrochemical properties
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李新海, Xian Ming Wu a, *, Xin Hai Li a, Shao Wei Wang b, Zhuo Wang c, Yun He Zhang a, Ming Fei Xu a, Ze Qiang He a
Thin Solid Films 425(2003)103-107,-0001,():
-1年11月30日
Li1.3Al0.3Ti1.7 (PO4)3 thin films were successfully prepared by the solution deposition using lithium acetate, aluminum nitrate, ammonium dihydrogen phosphate and titanium butoxide as starting materials. The structure, surface morphology, electrochemical window, and ionic conductivity of the films were studied by X-ray diffraction, scanning electron microscopy, cyclic voltammetry and AC impedance. The results showed that Li1.3Al0.3Ti1.7 (PO4)3 thin films annealed between 750℃ and 900℃ prepared by this method were well crystallized, homogenous and crack-free. The electrochemical window was beyond 2.4V and the ionic conductivity was approximately 1.57×10-5S/cm at room temperature for the film annealed at 800℃ for 30min.
Lithium titanium phosphate, X-ray diffraction, Scanning electron microscopy, Electrochemistry
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李新海, 王志兴, 陈启元, 孟永强, 彭文杰, 郭华军
中国稀土学报,2003,21(6):647~651,-0001,():
-1年11月30日
为了探明取代元素对非化学计量AB5型贮氢合金氢化物电极充放电性能的影响因素,对LaNi5.15,La(NiSn)5.14,La(NiSnCo)5.12,La(NiSnMn)5.12和La(NiSnCoMnAl)5.10开展了电极过程动力学的研究。采用线性极化的方法,控制电极过电势小于5mV,测量出不同荷电容量下电化学反应的交换电流密度。电极在满充电状态下i0并非最大,当电极部分放电后该值达到最大。对Co,Mn或Al部分取代形成的非化学计量多元贮氢合金的交换电流密度研究表明,Co有利于提高i0,而Mn和Al不利于提高i0。当氢化物电极中贮氢容量较小时,电极反应的交换电流密度与电极中贮氢容量存在对数值的线性关系。对于具有几乎一致的电极反应电子传递系数β的La(NiSn)5.14,La(NiSnCo)5.12,La(NiSnMn)5.12,La(NiSnCoMnAl)5.10氢化物电极,造成交换电流密度差异来源于热力学吸附平衡常数K0与反应活化能W0。含Al贮氢合金K0较低,这是影响交换电流密度的主要因素。对K0值接近的3种贮氢合金La(NiSn)5.14,La(NiSnCo)5.12,La(NiSnMn)5.12,活化能W0是造成交换电流密度不同的主要原因。
冶金物理化学, 贮氢合金, 非化学计量, 电极过程动力学, 稀土
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【期刊论文】Preparation of LiMn2O4 thin films by aqueous solution deposition
李新海, Xian Ming Wu a, *, Xin Hai Li a, Ming Fei Xu a, Yun He Zhang a, Ze Qiang He a, Zhuo Wang b
Materials Research Bulletin 37(2002)2345-2353,-0001,():
-1年11月30日
Cathode material LiMn2O4 thin films were prepared by aqueous solution deposition using lithium acetate and manganese acetate as starting materials. The structures, morphologies, and the first discharge specific capacity of the thin films were investigated as a function of annealing temperature and time. The cycling properties of the thin films were also examined. The results show that LiMn2O4 thin films prepared by this method are homogenous and crackfree. The thin film annealed at 750℃ for 30min has good rechargeability. The capacity loss per cycle is about 0.05% after being cycled 100 times.
A., Thin films, C., Thermogravimetric analysis, C., X-ray diffraction, D., Electrochemical properties
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【期刊论文】LiCoO2结构及性能与锂离子电池电压特性的关系①
李新海, 郭永兴, 王志兴, 彭文杰, 郭华军, 王红强
中国有色金属学报,2002,12(4):739~742,-0001,():
-1年11月30日
采用激光衍射,BET,XRD,SEM等方法,研究了系列LiCoO2正极材料的一些物理化学性能及其与锂离子电池电压特性的关系,并对由3种LiCoO2样品制成的试验电池进行了电压特性和循环寿命的测试,得出了制备有良好电压特性的锂离子电池用LiCoO2正极材料所应具备的性能:XRD谱线中I003/I104的值较大,颗粒分布均匀无团聚,表面光滑平整。
LiCoO2, 锂离子电池, 电压特性
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【期刊论文】Electrochemical Properties of Sn Doped AB5 Non-Stoichiometric Hydrogen Absorbing Alloys-Ⅱ*
李新海, WANG Zhi-xing, LI Xin-hai, CHEN Qi-yuan, GUO Hua-jun, PENG Wen-jie, GUO Bin-kun
JOURNAL OF RARE EARTHS, 2001, 19 (1): 029~033,-0001,():
-1年11月30日
The effects of some substituting elements on the specific discharge capacity, activation and cycling life of AB5 non-stoichiometric hydrogen absorbing alloys were studied electrochemically. Results show that the characteristics of hydrogen absorbing alloys under low current density are greatly improved through the substitution of Ni by Sn, Co, and Mn. Three hydrogen storage alloys, i.e., La (NiSn)5.14, La (NiSnCo)5.12 and La (NiSnMn)5.12 have the higher specific capacity and easy activation. However, Al in the alloy shows the opposite effect on the electrochemical properties. Under high current density, the discharge capacity and potential of La (NiSn)5.14 is superior to La (NiSnCo)5.12 and La (NiSnMn)5.12, but the cycling life of La (NiSn)5.14 is very short. The addition of Mn, Co and Al to the alloys improves the cycling characteristics. In all these alloys, La (NiSnCo)5.12 is considered as an ideal hydrogen storage alloy.
rare earths, hydrogen absorbing alloy, nonstoichiometry, Ni-MH battery, electrochemistry
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李新海, LI Ge-ping, , LI Dong, LIU Yu-yin, WANG Qing-jiang, GUAN Shao-xuan, LI Qing-chun
JOURNAL OF RARE EARTHS, 2000, 18 (4): 288~288,-0001,():
-1年11月30日
The Ti-5.6Al-4.8Sn-2Zr-1Mo-0.32Si-1Nd (Ti260) high temperature titanium alloy heat2treated in β phase region was studied. The results of electronic probe analysis show that no elemental accumulation at grain boundaries is detected by EMP2810Q instrument. The main reason for obstruction of grain growth is that the rare earth-rich phases hinder the movement of grain boundaries.
rare earths, titanium alloys, grain growth
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【期刊论文】乙二胺改性的玻璃基片上C60自组装薄膜的制备及其光致发光*
李新海, 李添宝, 黄克雄, 蒋汉瀛, 李晶, 蔡志光, 黎军, 赵善楷
高等学校化学学报,1999,20(5):680~683,-0001,():
-1年11月30日
利用C60与乙二胺改性的普通玻璃表面进行加成反应,得到一种新的C60自组装单层膜;在自组装单层膜的基础上,利用C60与乙二胺反应形成自组装双层膜。通过X光电子能谱、激光解吸电离飞行时间质谱等手段证实在乙二胺改性的普通玻璃表面上存在通过化学键合的C60自组装单层和双层膜。并对其光致发光性质进行了初步研究,发现在680nm附近存在一个与C60不同的宽的光致发光峰。
C60,, C60自组装单层膜,, C60自组装双层膜,, 光致发光,, 乙二胺
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