Cobalt‐doped layered lithium nickel oxide as a three‐in‐one electrode for lithium‐ion and sodium‐ion batteries and supercapacitor applications,International Journal of Energy Research

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Cobalt‐doped layered lithium nickel oxide as a three‐in‐one electrode for lithium‐ion and sodium‐ion batteries and supercapacitor applications
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-05-11 , DOI: 10.1002/er.5492
Diwakar Karuppiah ₁ , Rajkumar Palanisamy ₁ , Arjunan Ponnaiah ₁ , Subadevi Rengapillai ₁ , Sivakumar Marimuthu ₁

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Layered LiNi_0.94Co_0.06O₂ (LNCO) was prepared and explored as an energy‐storage material for Li‐ion (LIBs), Na‐ion (SIBs) batteries as well as supercapacitor application for the first time. All the physical and morphological characterizations were studied for the sample LNCO. The result displays good thermal stability, phase purity in the crystal structure, appreciable Brunauer‐Emmett‐Teller (BET) surface area (5.53 m² g⁻¹) and possesses cubic morphology. The cobalt was identified in lithium nickel oxide with binding energies at 794.02, 779.04 and 784.30 eV, respectively. In the case of LIBs, LNCO exists with a minimal difference of 5 mAh g⁻¹, even when cycled from 2C to 0.1C. After 200 cycles, the specific capacity, 247 mAh g⁻¹, is obtained for the cell with retention of 97.8% (efficiency 99.8%) at 0.1C. In SIBs, at 0.1C, the discharge capacity of 182 mAh g⁻¹ was restored even when cycled after 2C. After 200 cycles, a discharge capacity of 204 mAh g⁻¹ is ensured with retention of 96.6% (efficiency of 99.4% at 0.1C). In supercapacitor, the electrode, LNCO, delivered a specific capacity of 300 F g⁻¹ at 0.5 A g⁻¹. Therefore, LNCO is highly recommended as a suitable electrode material for fulfilling the requirement of energy‐storage applications.

中文翻译：

钴掺杂层状氧化镍镍作为锂离子和钠离子电池以及超级电容器应用的三合一电极

制备了层状LiNi _0.94 Co _0.06 O ₂（LNCO），并首次将其用作锂离子（LIB），钠离子（SIB）电池以及超级电容器应用的储能材料。研究了样品LNCO的所有物理和形态特征。结果显示出良好的热稳定性，晶体结构中的相纯度，可观的Brunauer-Emmett-Teller（BET）表面积（5.53 m ² g ^-1）并具有立方形态。在锂镍氧化物中鉴定出钴，其结合能分别为794.02、779.04和784.30 eV。对于LIB，LNCO的最小差异为5 mAh g ^-1，即使从2C循环到0.1C也是如此。在200次循环之后，获得了比电池247mAh g ^-1的比电池，其在0.1C下的保留率为97.8％（效率为99.8％）。在SIB中，即使在2C之后循环，在0.1C下也恢复了182mAh g ^-1的放电容量。在200次循环之后，确保了204mAh g ^-1的放电容量，并且保留了96.6％（在0.1C下的效率为99.4％）。在超级电容器，电极，LNCO，递送的300°F g的比容量^-1 0.5 A G ^-1。因此，强烈推荐LNCO作为满足储能应用要求的合适电极材料。

更新日期：2020-05-11

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