Multiple charging/discharging cycles of a rechargeable oxide battery – Electrochemistry and post-test analysis

IF 5.4 Q2 CHEMISTRY, PHYSICAL
Norbert H. Menzler , Qingping Fang
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Abstract

A two-layer rechargeable oxide battery using a stack initially developed for solid oxide cells was operated for 2100 h with more than 1000 charging/discharging cycles. The operation temperature was 800 °C and the applied current density (on the solid oxide cell) was 150 mA cm−2. During operation, no electrochemical indications for degradation were measured. The voltages achieved during redox cycling were in good agreement with the equilibrium voltages of the envisaged corresponding phases. For the first time, a storage material based on the calcium–iron oxide with the richest iron content was used. Storage utilization was 86%, thereby reaching a capacity of 20.6 Ah per layer. Post-test analysis of the storage revealed mostly expected storage phases and sufficient remaining storage porosity.

Abstract Image

可充电氧化物电池的多次充放电循环。电化学和测试后分析
一种两层可充电氧化物电池,使用最初为固体氧化物电池开发的堆叠,运行时间为2100 h,充放电周期超过1000次。操作温度为800 °C,施加电流密度(在固体氧化物电池上)为150 mA cm−2。在运行过程中,没有测量降解的电化学指示。在氧化还原循环过程中获得的电压与设想的相应相的平衡电压很好地一致。首次使用了铁含量最高的钙铁氧化物为基础的存储材料。存储利用率为86%,每层容量达到20.6 Ah。测试后的存储分析显示了大部分预期的存储阶段和足够的剩余存储孔隙度。
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来源期刊
CiteScore
9.10
自引率
0.00%
发文量
18
审稿时长
64 days
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