Improved electrochemical performances of high voltage LiCoO<sub>2</sub> with tungsten doping<xref rid="cpb_27_8_088202_fn1" ref-type="fn">*</xref><fn id="cpb_27_8_088202_fn1"><label>*</label><p>Project supported by the National Key Rerearch and Development Program of China (Grant No. 2017YFB0102004), the National Natural Science Foundation of China (Grant No. 51502334), the Fund from Beijing Municipal Science & Technology Commission, China (Grant No. D171100005517001), and the Thousand Talent Program for Outstanding Young Scientists, China.</p></fn>

Improved electrochemical performances of high voltage LiCoO₂ with tungsten doping**

Project supported by the National Key Rerearch and Development Program of China (Grant No. 2017YFB0102004), the National Natural Science Foundation of China (Grant No. 51502334), the Fund from Beijing Municipal Science & Technology Commission, China (Grant No. D171100005517001), and the Thousand Talent Program for Outstanding Young Scientists, China.

Zhang Jie-Nan^{1, 2}, Li Qing-Hao¹, Li Quan^{1, 2}, Yu Xi-Qian^{1, †}, Li Hong^{1, 2, ‡}

(color online) (a) The cycling performance and coulombic efficiency of LiCoO₂/Li battery for the first 100 cycles. All batteries are activated by a cycle of low-rate (0.1 C, 1 C = 274 mAh · g⁻¹) charge/discharge before the stability test at 1 C (1 C = 274 mAh · g⁻¹) in the voltage range of 3.0 V–4.6 V (versus Li/Li⁺). (b) The charge–discharge curves of 0.1% W-doped sample at 1st and 200th cycles.