Synthesis and electrochemical properties of Pb/Sb@C composite for lithium-ion battery application
- PDF / 3,405,652 Bytes
- 6 Pages / 595.276 x 790.866 pts Page_size
- 33 Downloads / 201 Views
ORIGINAL PAPER
Synthesis and electrochemical properties of Pb/Sb@C composite for lithium-ion battery application Zhao Ma 1 & Xiao Chen 1 & Huimin Wu 1 & Yao Xiao 1 & Chuanqi Feng 1 Received: 5 July 2020 / Revised: 20 July 2020 / Accepted: 21 July 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Sb-based metal composite with high theoretical capacity and lower voltage platform is considered as ideal anode material for lithium-ion battery (LIB) application; however, it exhibits volume expansion and structure pulverization during the lithium-ion insertion/extraction process, which leads specific capacity loss during cycling process. In this work, the Pb/Sb@C composite was synthesized successfully by rheological reaction method firstly. The structure of Pb/Sb@C composite was characterized by X-ray diffraction (XRD) techniques. The morphologies of Pb/Sb@C composite were observed by scanning electron microscope (SEM) and transmission electron microscope (TEM). The electrochemical properties were tested by battery comprehensive testing system. The Pb/Sb@C composite with a composition of 6.22 At% Pb, 11.94 At% Sb, and 81.84 At% C (noted as PSC-2) owns high initial specific capacity (1300 mAh g−1) and retained it as 950 mAh g−1 at 0.1 A g−1 after 100 cycles. The Pb/Sb@C composite with typical composition can behave higher reversible capacity and better rate performance. The related electrochemical mechanisms were presented also. The Pb/Sb@C composite with optimized composition (PSC-2) is a promising anode material for the lithium-ion battery application. Keywords Composite . Inorganic synthesis . Electronic materials . Electrochemical properties . Anode materials
Introduction Recently, owing to high-energy density and no memory effect, lithium-ion batteries (LIBs) has become the ideal power supply for most portable electronic devices such as laptops, mobile phone, and electric vehicles [1–4]. Although these batteries display a high-energy density, the demand for higher electrical performance has compelled people to continually increase the capacity and long-life of cells [5–8]. Besides, carbon materials as traditional and widely used as anode materials (theoretical capacity 372 mAh g−1) cannot meet the rigor requirements for high performance LIBs any more [9, 10] Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11581-020-03714-2) contains supplementary material, which is available to authorized users. * Chuanqi Feng [email protected] 1
Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials & Ministry-of-Education Key Laboratory for Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan 430062, China
Due to its higher lithium storage capacity and conductivity, some materials with a lithium-ion desorption mechanism by conversion reaction and alloying reaction have been favored by most many researchers. In contrast, the embedded antimony-based anode material with appropriate discharge/ charge platfor
Data Loading...
