Improved Thermal Cyclability of Tertiary Battery Made of Prussian Blue Analogues
Improved Thermal Cyclability of Tertiary Battery Made of Prussian Blue Analogues
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DOI：
10.1002/slct.201902340
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发表时间：
2019-08-07
期刊：
影响因子：
2.1
通讯作者：
Moritomo, Yutaka
中科院分区：
文献类型：
--
作者：
Takahara, Izumi;Shibata, Takayuki;Moritomo, Yutaka
三次电池是利用阳极和阴极材料之间的氧化还原电位（V）的热系数（α =dV/dT）之差（Δ α），通过环境热而不是电能充电。在原型NaxCo[Fe（CN）（6）]（0.71）（NCF 71）/NaxCo[Fe（CN）（6）]（0.90）（NCF 90）三次电池中，热循环性不好。这里，我们使用Ni取代的NaxNi[Fe（CN）（6）]（0.68）（NNF 68）显著改善了三次电池的热循环性。Ni取代的NNF 68/NCF 90三次电池表现出良好的热循环性能：电池电压和容量在第10次热循环之前基本保持不变。
Tertiary battery is charged by the environmental heat, not by the electric energy, by using the difference (Delta alpha) in the thermal coefficient (alpha=dV/dT) of redox potential (V) between the anode and cathode materials. The thermal cyclability is not good in the prototypical NaxCo[Fe(CN)(6)](0.71) (NCF71)/NaxCo[Fe(CN)(6)](0.90) (NCF90) tertiary battery. Here, we significantly improved the thermal cyclability of the tertiary battery with using Ni-substituted NaxNi[Fe(CN)(6)](0.68) (NNF68). The Ni-substituted NNF68/NCF90 tertiary battery shows good thermal cyclability: both the cell voltage and capacity essentially unchanged up to the 10th thermal cycles.