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The inner pressure of the Atoms in a Solid in Refined TFD Theory

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The Inner Pressure of the Atoms in a Solid in Refined TFD Th...

Effect of Cobalt Phthalocyanine on Floating-Charge Performance of Nickel-Metal Hydride Battery

2002年微纳米国际会议

作者： Ru-Zeng Zhu Yu-Hua Wei Jin Qian State Key Laboratory of Nonlinear Mechanics (LNM) Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Department of Physics Tsinghua University Beijing 100084 China

＜正＞ The relation between the inner pressure of an atom in a solid and the density of energy of electrons under Refined TFD theory is given.

关键词： inner pressure TFD theory energy density

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Journal of Rare Earths 2004年第5期22卷 649-653页

作者：王芳吴锋陈实王国庆 School of Chemical Engineering and Environmental Science Beijing Institute of Technology National (Development) Center of Hi-Tech Green Materials Beijing 100081 China

In Ni-MH battery, oxygen evolution causes a high inner pressure during charge and overdischarge, and an inappropriate eliminating way of the oxygen in the battery results in accumulation of heat. This is the main obstacle to develop and apply high capability and high power battery. In this paper, effect of cobalt phthalocyanine (CoPc) on the floating-charge performance of Ni-MH batteries are examined. Experimental results show that the battery with CoPc additive by appropriate adding way displayed a better capability of floating charge and discharge than the one without CoPc. The battery with CoPc added into electrolyte shows the best charging efficiency and cycleability and the slowest increasing speed of inner pressure after 2000th charge and discharge.

关键词： Ni-MH batteries electrochemical catalyst cobalt phthalocyanine floating-charge inner pressure rare earths

Wrinkle Analysis of the Space Inflatable Paraboloid Antenna

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Journal of Shanghai Jiaotong university(Science) 2011年第1期16卷 24-33页

作者：肖薇薇陈务军付功义 Space Structures Research Centre Shanghai Jiaotong University

The presence of wrinkles in the membrane is the main factor to induce the reflector surface inaccuracy of the space inflatable *** on the commercial finite element package ABAQUS,a numerical procedure for membrane wrinkle analysis was set up and used to analyze a space inflatable antenna which was under inner pressure to evaluate its wrinkle ***,the inner pressure effect on the reflector's wrinkle pattern was studied *** inner pressure increases,both the number and the amplitude of the wrinkles decrease,but the total deformation of the whole reflector surface increases ***,the influence of the interactions between antenna's parts was investigated *** kind of unwanted interaction deteriorates reflector's wrinkle *** works are valuable to the development and research of the space inflatable antenna.

关键词： space inflatable antenna inner pressure interaction wrinkling analysis

Effect of Overcharge on Electrochemical Performance of Sealed-Type Nickel/Metal Hydride Batteries

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Journal of Beijing Institute of Technology 2005年第4期14卷 438-441页

作者：李丽吴锋陈人杰陈实 School of Chemical Engineering and Environment Beijing Institute of Technology Beijing100081 China

The effects of overcharge on electrochemical performance of AA size sealed-type nickel/metal hydride（Ni/MH） batteries and its degradation mechanism were investigated. The results indicated that the relationship between the effects of different overcharge currents on the increasing velocity of inner pressure and the degradation velocity of cycle life and discharge voltage remains in almost direct proportion. After overcharge cycles, the positive electrode materials remain the original structure, but there occur some breaks because of the irreversible expand of crystal lattice. And the negative electrode alloy particles have inconspicuous pulverization, but are covered with lots of corrosive products and its main component is rare earth hydroxide or oxide. These are all the main reasons leading to the degradation behavior of the discharge capacity and cycle life of Ni/MH batteries.

关键词： nickel/metal hydride batteries overcharge inner pressure degradation mechanism