An electrochemical cell, comprising: a first electrode comprising a first active electrode species; wherein the first active electrode species comprises lithium; a second electrode comprising a second active electrode species; an electrolyte positioned between the first electrode and the second electrode; an additive having a structure as in Formula and/or an additive precursor having a structure as in Formula: wherein: each R 1 and R 2 are the same or different, optionally connected, and are independently selected from the group consisting of substituted and unsubstituted, branched and unbranched aliphatic; substituted and unsubstituted cyclic; substituted and unsubstituted, branched and unbranched acyclic; substituted or unsubstituted, branched and unbranched heteroaliphatic; substituted and unsubstituted, branched and unbranched acyl; substituted and unsubstituted aryl; and substituted and unsubstituted heteroaryl; and n is 1; and (a) each Q is independently selected from the group consisting of O, S; or (b) each Q is independently selected from the group consisting of O, S, NR 2; and the additive and any additive precursor is present in the electrochemical cell in a total amount of less than or equal to 4 wt% versus the total electrolyte weight, or the additive and any additive precursor is present in the electrochemical cell in a total amount of less than or equal to 2 wt% versus the weight of each of the first and second electrodes; or (c) each Q is selected from the group consisting of O, S, NR 2; and the additive and any additive precursor is/are different from the first and second active electrode species wherein the additive and/or additive precursor is present in the electrolyte. a first electrode comprising a first active electrode species; wherein the first active electrode species comprises lithium; a second electrode comprising a second active electrode species; an electrolyte positioned between the first electrode and the second electrode; an additive having a structure as in Formula and/or an additive precursor having a structure as in Formula: wherein: each R 1 and R 2 are the same or different, optionally connected, and are independently selected from the group consisting of substituted and unsubstituted, branched and unbranched aliphatic; substituted and unsubstituted cyclic; substituted and unsubstituted, branched and unbranched acyclic; substituted or unsubstituted, branched and unbranched heteroaliphatic; substituted and unsubstituted, branched and unbranched acyl; substituted and unsubstituted aryl; and substituted and unsubstituted heteroaryl; and n is 1; and (a) each Q is independently selected from the group consisting of O, S; or (b) each Q is independently selected from the group consisting of O, S, NR 2; and the additive and any additive precursor is present in the electrochemical cell in a total amount of less than or equal to 4 wt% versus the total electrolyte weight, or the additive and any additive precursor is present in the electrochemical cell in a total amount of less than or equal to 2 wt% versus the weight of each of the first and second electrodes; or (c) each Q is selected from the group consisting of O, S, NR 2; and the additive and any additive precursor is/are different from the first and second active electrode species wherein the additive and/or additive precursor is present in the electrolyte. (a) each Q is independently selected from the group consisting of O, S; or (b) each Q is independently selected from the group consisting of O, S, NR 2; and the additive and any additive precursor is present in the electrochemical cell in a total amount of less than or equal to 4 wt% versus the total electrolyte weight, or the additive and any additive precursor is present in the electrochemical cell in a total amount of less than or equal to 2 wt% versus the weight of each of the first and second electrodes; or (c) each Q is selected from the group consisting of O, S, NR 2; and the additive and any additive precursor is/are different from the first and second active electrode species