A negative electrode for a secondary battery comprising: a negative electrode collector; and a negative electrode active material integrated with at least a portion of a surface of the negative electrode collector, wherein the negative electrode collector has a plurality of delamination prevention current collection grooves with which the negative electrode active material is integrated, and the negative electrode active material is disposed on an inner surface of each of the delamination prevention current collection grooves so that a space part in which a passivation layer is formed is defined during charging and discharging wherein the negative electrode active material is disposed on a bottom portion of the delamination prevention current collection groove, the space part is defined in the delamination prevention current collection groove except for a portion at which the negative electrode active material is disposed, and the passivation layer formed in the space part of the delamination prevention current collection groove during the charging and discharging is supported to be prevented from being delaminated by an inner wall of the delamination prevention current collection groove wherein, either i) when a width of the delamination prevention current collection groove is A, and a distance between the plurality of delamination prevention current collection grooves is B, a following conditional expression is satisfied: 0.5 < A/B < 10; or ii) wherein, when a depth of the delamination prevention current collection groove is C, and a total thickness of the negative electrode collector is E, a following conditional expression is satisfied: 0.2 < C/E < 0.8; or, iii) wherein, when a depth of the space part of the delamination prevention current collection groove is D, a following conditional expression is satisfied: 0.05 μm < D. a negative electrode collector; and a negative electrode active material integrated with at least a portion of a surface of the negative electrode collector, wherein the negative electrode collector has a plurality of delamination prevention current collection grooves with which the negative electrode active material is integrated, and the negative electrode active material is disposed on an inner surface of each of the delamination prevention current collection grooves so that a space part in which a passivation layer is formed is defined during charging and discharging wherein the negative electrode active material is disposed on a bottom portion of the delamination prevention current collection groove, the space part is defined in the delamination prevention current collection groove except for a portion at which the negative electrode active material is disposed, and the passivation layer formed in the space part of the delamination prevention current collection groove during the charging and discharging is supported to be prevented from being delaminated by an inner wall of the delamination prevention current collection groove wherein, either i) when a width of the delamination prevention current collection groove is A, and a distance between the plurality of delamination prevention current collection grooves is B, a following conditional expression is satisfied: 0.5 < A/B < 10; or ii) wherein, when a depth of the delamination prevention current collection groove is C, and a total thickness of the negative electrode collector is E, a following conditional expression is satisfied: 0.2 < C/E < 0.8; or, iii) wherein, when a depth of the space part of the delamination prevention current collection groove is D, a following conditional expression is satisfied: 0.05 μm < D. i) when a width of the delamination prevention current collection groove is A, and a distance between the plurality of delamination prevention current collection grooves is B, a following conditional expression is satisfied: 0.5 < A/B < 10; or ii) wherein, when a depth of the delamination prevention current collection groove is C, and a total thickness of the negative electrode collector is E, a following conditional expression is satisfied: 0.2 < C/E < 0.8; or, iii) wherein, when a depth of the space part of the delamination prevention current collection groove is D, a following conditional expression is satisfied: 0.05 μm < D.