In Situ Measurements of Stress-Potential Coupling in Lithiated Silicon

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Quantitative fracture strength and plasticity measurements of lithiated silicon nanowires by in situ TEM tensile experiments.

We report in situ tensile strength measurement of fully lithiated Si (Li-Si alloy) nanowires inside a transmission electron microscope. A specially designed dual probe with an atomic force microscopy cantilever and a scanning tunneling microscopy electrode was used to conduct lithiation of Si nanowires and then perform in situ tension of the lithiated nanowires. The axial tensile strength decre...

متن کامل

Measurements of the Fracture Energy of Lithiated Silicon Electrodes

5 ABSTRACT: We have measured the fracture energy of 6 lithiated silicon thin-film electrodes as a function of lithium 7 concentration. To this end, we have constructed an electro8 chemical cell capable of testing multiple thin-film electrodes in 9 parallel. The stress in the electrodes is measured during 10 electrochemical cycling by the substrate curvature technique. 11 The electrodes are disc...

متن کامل

Anisotropic Compositional Expansion and Chemical Potential for Amorphous Lithiated Silicon under Stress Tensor

Si is a promising anode material for Li-ion batteries, since it absorbs large amounts of Li. However, insertion of Li leads to 334% of volumetric expansion, huge stresses, and fracture; it can be suppressed by utilizing nanoscale anode structures. Continuum approaches to stress relaxation in LixSi, based on plasticity theory, are unrealistic, because the yield strength of LixSi is much higher t...

متن کامل

A stable lithiated silicon–chalcogen battery via synergetic chemical coupling between silicon and selenium

Li-ion batteries dominate portable energy storage due to their exceptional power and energy characteristics. Yet, various consumer devices and electric vehicles demand higher specific energy and power with longer cycle life. Here we report a full-cell battery that contains a lithiated Si/graphene anode paired with a selenium disulfide (SeS2) cathode with high capacity and long-term stability. S...

متن کامل

Mechanical behavior of electrochemically lithiated silicon

The time-independent and time-dependent mechanical behavior of electrochemically lithiated silicon was studied with nanoindentation. As indentation was performed with continuous stiffness measurements during loading and load-hold, new insight into the deformation behavior of lithiated silicon is furnished. Supporting other research, Young's modulus and the hardness of lithiated silicon are foun...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of The Electrochemical Society

سال: 2010

ISSN: 0013-4651

DOI: 10.1149/1.3489378