NEGATIVE ELECTRODE FOR BATTERIES, BATTERY, VEHICLE AND BATTERY-EQUIPPED DEVICE

摘要

The present invention provides: a negative electrode for batteries, which is capable of providing a secondary battery that has a higher capacity than conventional secondary batteries; a battery which uses this negative electrode for batteries; and the like. This negative electrode for batteries comprises a silicate which has a pyroxene structure and is represented by general formula ApM2-pX2O6 (wherein A represents at least one element that is selected from the group consisting of Na, Ca, Fe, Zn, Mn and Mg; M represents at least one element that is selected from the group consisting of transition metal elements, Al and Mg, inevitably including a transition metal element; A and M may be the same element or different elements; 0 < p < 2; X2 represents Si2 or AlqSi2-q; and 0 < q < 2).