Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) Campus UAB, E-08193 Bellaterra, Catalonia, Spain.
Toyota Motor Europe, Research and Development 3, Advanced Technology 1, Technical Centre, Hoge Wei 33 B, B-1930 Zaventem, Belgium.
Nat Mater. 2016 Feb;15(2):169-72. doi: 10.1038/nmat4462. Epub 2015 Oct 26.
The development of a rechargeable battery technology using light electropositive metal anodes would result in a breakthrough in energy density. For multivalent charge carriers (M(n+)), the number of ions that must react to achieve a certain electrochemical capacity is diminished by two (n = 2) or three (n = 3) when compared with Li(+) (ref. ). Whereas proof of concept has been achieved for magnesium, the electrodeposition of calcium has so far been thought to be impossible and research has been restricted to non-rechargeable systems. Here we demonstrate the feasibility of calcium plating at moderate temperatures using conventional organic electrolytes, such as those used for the Li-ion technology. The reversibility of the process on cycling has been ascertained and thus the results presented here constitute the first step towards the development of a new rechargeable battery technology using calcium anodes.
如果开发出一种利用光正电性金属阳极的可充电电池技术，那么在能量密度方面将会取得突破。对于多价电荷载流子（M(n+)），与 Li(+)（参考文献）相比，为了达到一定的电化学容量，所需反应的离子数量减少了两个（n = 2）或三个（n = 3）。尽管已经证明镁的概念是可行的，但迄今为止，人们认为钙的电沉积是不可能的，研究仅限于不可充电系统。在这里，我们使用传统的有机电解质（例如用于锂离子技术的电解质），在中等温度下证明了钙电镀的可行性。通过循环已经确定了该过程的可逆性，因此这里的结果构成了朝着开发使用钙阳极的新型可充电电池技术迈出的第一步。
