Although　silicon　is　one　of　the　most　prospective　alternatives　with　ultrahigh　theoretical　capacity,　its　significant　intrinsic　volume　changes　seriously　restricts　its　practical　applications.　Herein,　a　water-soluble　polymer　binder　with　a　three　dimensional　(3D)　network　is　exploited　for　stable　silicon　(Si)　anode　via　in-situ　thermal　cross-linking　of　xanthan　gum　(XG)　with　polyacrylamide　(PAM).　Moreover,　the　cross-linked　structure　of　c-XG-PAM　gel　binder　with　hydroxyl　groups　and　amide　groups　remarkably　enhances　the　adhesion　on　silicon　and　Cu　current　collector.　As　a　result,　the　c-XG-PAM　binder　offers　appealing　electrochemical　performance　for　SiNP　electrodes　(1104　mAh　g−1　after　1000　cycles)　and　SiC　electrodes　(stabilizing　for　over　400　cycles).　The　gel　polymer　binder　provides　a　prospective　avenue　for　pursuing　the　elongated　cycling　life　of　high　capacity　battery　electrodes.　©　2020