کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624360 | 989589 | 2016 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polymer microsphere-assisted synthesis of lithium-rich cathode with improved electrochemical performance
ترجمه فارسی عنوان
سنتز لیتیم غنی از کاتد با عملکرد الکتروشیمیایی بهبود یافته با میکروسپور پلیمر
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
کاتد غنی از لیتیوم، هم رسوبی، میکروسپور پلیمری کمک می کند، ساختار متخلخل
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
The Li-rich layered cathode material Li1.165Mn0.501Ni0.167Co0.167O2 with porous structure has been successfully synthesized through a facile co-precipitation approach followed with a high-temperature calcination treatment, adopting polymer microsphere (PSA) as a template and conductive agent. The PSA-assisted Li1.165Mn0.501Ni0.167Co0.167O2 composite exhibits remarkably improved cycling stability and rate capability compared with the bare composite. It delivers a high initial discharge capacity of 267.0 mA h gâ1 at 0.1 C (1 C=250 mA gâ1) between 2.0 V and 4.65 V. A discharge capacity of 214.9 mA h g â1 is still obtained after 100 cycles. Furthermore, the diffusion coefficients of Li+ investigated by the cyclic voltammetry technique are approximately 10â15-10â14 cm2 sâ1. Such outstanding performance is mainly ascribed to: on one hand, the carbon residue of PSA after being calcined at high temperature contributes to enhance the electronic conductivity of the electrode and alleviates the volume changes during the Li+-insertion/extraction, leading to an improved rate capability; on the other hand, the unique porous structure and small particle size are conductive to increase the exposed electrochemical active surface, shorten Li+ diffusion distance and thus enhance the lithium storage capacity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 4, March 2016, Pages 4899-4910
Journal: Ceramics International - Volume 42, Issue 4, March 2016, Pages 4899-4910
نویسندگان
Shaomeng Ma, Xianhua Hou, Yanling Huang, Changming Li, Shejun Hu, Kwok-ho Lam,