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Influence of the Li/TM Ratio on Electrochemical Properties of LiNi0.9Co0.1O2 Cathodes
Author(s) -
Danhua Li,
Jing Wang,
Ran Wang,
Rui Hou,
Yuefeng Su,
Qiang Yuan,
Shi Chen,
Feng Wu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/774/1/012128
Subject(s) - electrochemistry , cathode , lithium (medication) , materials science , transition metal , nickel , metal , energy density , chemical engineering , chemistry , electrode , metallurgy , engineering physics , organic chemistry , catalysis , medicine , engineering , endocrinology
The layered Nickel-rich LiNi x M y O 2 (Ni ≥60%) cathodes have attracted much attention owing to their high energy density, promising cycle property and low cost. Nevertheless, their electrochemical performances greatly depend on the synthesis conditions, especially for the ratio of lithium to transition metal (Li / TM). Herein, we have systematically investigated the influence of Li/TM on structure and electrochemical performance of LiNi 0.9 Co 0.1 O 2 cathodes. The optimized LiNi 0.9 Co 0.1 O 2 (Li/TM is 1.02) exhibits highest initial capacity of 189.8mAh g −1 at 1 C and much better capacity retention of 82.19% after 100 cycles between 2.8 and 4.35 V at 1 C.

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